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Coding for fun since 1996, Learn by doing and sharing.

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Blog

Add two factor auth login protection to WordPress with YubiCo hardware YubiKeys and or 2FA Authenticator App

October 28, 2018 by Simon

Here is a quick guide to show you how to add two-factor auth login protection to WordPress with YubiCo hardware YubiKeys and or 2FA authenticator app

I have a number of guides on moving away from CPanel, Setting up VM’s on AWS, Vultr or Digital Ocean along with installing and managing WordPress from the command line.

Why Secure WordPress

WordPress CMS is a widely targeted CMS for hackers. View the official WordPress stats on WordPress Version/PHP and MySQL Version. View WordPress vulnerabilities here.

Read the Sucuri 2017 report on reported WordPress Hacks here (spoiler 34,371 infected websites in 2017).

Plugins exist to secure and scan WordPress. Read my blog post here on the now-retired Gravityaity Scan plugin and the awesome WordFence security plugin.

You (and hackers) can scan your site with https://wpscans.com/ or other open-source tools like wp-scan from OWASP ZAP. If you manage a WordPress site I’d recommend you install Kali Linux to scan your site.

Running a wp scan in Kali Linux is easy.

wpscan --url https://fearby.com --debug-output 2> ~/Desktop/wpscan.txt

The output from the Kali Linux wpscan tool

WPscan tool in KaiLinux

What are Hardware YubiCo YubiKeys

Read my guide here to see what YubiCo YubiKeys are and how to use them.

Yubico YubiKeys

Get the Two-Factor Plugin for WordPress Plugin

Plugin: https://en-au.wordpress.org/plugins/two-factor/

Two-Factor

Plugin Page at WordPress.org

Two Factor Auth Plugin

The source code for this plugin is available (nice): https://github.com/georgestephanis/two-factor. This plugin was updated 2 weeks ago (nice).

Downloading the Plugin

FYI: I do not allow downloading or updating of plugins in WordPress (via FTP), I prefer SSH manual downloading. FTP plugin installation and updating are not allowed on my site.

I got the latest download URL (e.g. https://downloads.wordpress.org/plugin/two-factor.zip) by copying the URL from the download button above.

I connected to my server via SSH and navigated to my WordPress plugin folder

cd /your-www-root/wp-content/plugins

I download the plugin.

[email protected]:/your-www-root/wp-content/plugins# wget https://downloads.wordpress.org/plugin/two-factor.zip
--2018-10-28 14:44:27--  https://downloads.wordpress.org/plugin/two-factor.zip
Resolving downloads.wordpress.org (downloads.wordpress.org)... 198.143.164.250
Connecting to downloads.wordpress.org (downloads.wordpress.org)|198.143.164.250|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 47882 (47K) [application/octet-stream]
Saving to: 'two-factor.zip'

two-factor.zip                             100%[=======================================================================================>]  46.76K  --.-KB/s    in 0.001s

2018-10-28 14:44:27 (37.1 MB/s) - 'two-factor.zip' saved [47882/47882]

I extracted the plugin zip file

[email protected]:/your-www-root/wp-content/plugins# unzip two-factor.zip
Archive:  two-factor.zip
   creating: two-factor/
   creating: two-factor/assets/
  inflating: two-factor/assets/banner-1544x500.png
  inflating: two-factor/assets/banner-772x250.png
  inflating: two-factor/assets/icon-128x128.png
  inflating: two-factor/assets/icon-256x256.png
  inflating: two-factor/class.two-factor-core.php
   creating: two-factor/includes/
  inflating: two-factor/includes/function.login-header.php
   creating: two-factor/includes/Google/
  inflating: two-factor/includes/Google/u2f-api.js
   creating: two-factor/includes/Yubico/
  inflating: two-factor/includes/Yubico/U2F.php
   creating: two-factor/providers/
  inflating: two-factor/providers/class.two-factor-backup-codes.php
  inflating: two-factor/providers/class.two-factor-dummy.php
  inflating: two-factor/providers/class.two-factor-email.php
  inflating: two-factor/providers/class.two-factor-fido-u2f-admin-list-table.php
  inflating: two-factor/providers/class.two-factor-fido-u2f-admin.php
  inflating: two-factor/providers/class.two-factor-fido-u2f.php
  inflating: two-factor/providers/class.two-factor-provider.php
  inflating: two-factor/providers/class.two-factor-totp.php
   creating: two-factor/providers/css/
  inflating: two-factor/providers/css/fido-u2f-admin.css
   creating: two-factor/providers/js/
  inflating: two-factor/providers/js/fido-u2f-admin-inline-edit.js
  inflating: two-factor/providers/js/fido-u2f-admin.js
  inflating: two-factor/providers/js/fido-u2f-login.js
  inflating: two-factor/readme.md
  inflating: two-factor/readme.txt
  inflating: two-factor/two-factor.php
  inflating: two-factor/user-edit.css

Enable the Plugin

Don’t forget to update the plugin in WordPress.

Enable the Plugin in WordPress

Once the plugin is enabled I can setup Two-factor authentication

Edit your Users

To setup two-factor authentication open your WordPress users screen (/wp-admin/users.php).

WordPress Users List /wp-admin/users.php

Notice the Two-Factor column

Edit your desired user to enable two-factor login options

Scroll down to Two Factor Options header, you will see a QR code that you can scan with your two-factor authentication app (e.g Google Authenticator or YubiCo Authenticator).

Enable 2FA via plugin

Always generate and save backup codes in case you lose your YubiKeys or authenticator app.

You can enable authentication methods as required.

Add the code to your Authenticator app. I will add mine to my Yubico Authenticator app that requires the insertion of a physical YubiKey. I can read my YubiKey via NFC and use my mobile phone to generate one time passwords too. Read here to learn about YubiKey 2FA (touch) devices. I have secured my Ubuntu/Debian and macOSX with these keys,

TIP: Don’t forget to save the user after editing.

Add the YubiKey 2FA (touch) to WordPress logins.

While editing a user click Register New Key under Security Keys

Add the YubiKey 2FA to WordPress

Add your primary and backup YubiKey as required (I added both of mine).

Screenshot showing two YubiKeys added to WordPress.

Enable all desired 2FA options

  • Email (OFF)
  • Time based One-Time Password (Authenticator App) (ON)
  • FIDO Universal 2nd Factor (U2F) – YubiKey Insertion and touch (ON)
  • Backup Codes (ON)

Set all desired 2FA login methods

TIP: Don’t forget to save the user after editing.

Users Table

Aim to set up every user who has access to your WordPress to use 2FA.

Mobile 2FA login

I tested logos via mobile and I was prompted to tab my YubiKey to my phone. Nice.

What happens at login?

When One Time Password is enabled as the primary authentication method I am prompted for a one-time password after entering my username and password. I then need to insert my YubiKey (or tap the YubiKey to my phone (via NFC)) to generate a one time password.

Screenshot of 2FA login prompt

When FIDO is enabled I need to insert my YubiKey and press the button.

Enter Security Key

Conclusion

I can now secure my WordPress site with 2FA protections without expensive security plugins.

I hope this guide helps someone.

More

Read more here

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Revision History

v1.1 Added Mobile login details

v1.0 Initial post

Filed Under: 2FA, 2nd Factor, Auth, Authorization, Blog, MFA, NFC, owasp, Security, SSH, Vulnerability, Yubico, YubiKey Tagged With: 2FA, add, and, app, auth, authenticator, factor, hardware, login, or, Protection, to, two, with, wordpress, Yubico, YubiKeys

Manage Social Media posts with Buffer

October 10, 2017 by Simon

Here is a quick setup guide for Buffer.com where you can connect to and post (manually or scheduled) to multiple social media platforms.

You can view pricing here. You can signup for a  free Buffer Individual plan: https://buffer.com/signup. Signup to Buffer (Free, Limited)

Post Signup Setup

Connect Buffer to Social Media Platforms

Buffer SIgnup

Type post content

Schedule

Change the default image

Define an Image

Choose the platforms and images

Choose Platforms

Schedule the Post

Schedule

You can manually share to a platform at any time.

Share Now

TIP: If you share now you will need to manually share on each platform separately.

Results

Buffer Results

Buffer features I like

  • Good Free Plan
  • Post Scheduling
  • Image Creation Integration (Paid)
  • Reply integration (Paid)
  • Manage all your social accounts from one simple dashboard
  • Ability to set custom posting slots.

Buffer features I Don’t like

  • Manual Share to all feature missing.
  • Timezones earlier than US Timezones appear to be untouchable (my Timezone is set)
    Timezone

Buffer FAQ’s: https://faq.buffer.com/

Tip: Create custom posting slots

Custom Slots

More soon (reply automation and image creation).

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Revision History

v1.1 Added Posting Slots Info

etc

Filed Under: Analitics, Analytics, Automation, Blog, Business, Marketing, Networking, SEO Tagged With: Buffer, Manage, Media, posts, Social

Improving the speed of WordPress

September 22, 2017 by Simon

This post shows my never-ending quest to speed up WordPress for free.

I have used to use WP Total Cache in the past but decided to check out what others recommended, I found this post 6 Best WordPress Caching Plugins Compared. Some WordPress Caching Plugins.

  • W3 Total cache
  • WP Fastest Cache
  • Cache Enable
  • WP Rocket
  • WP Super Cache
  • Etc

What plugin do I use?

Benchmark (No Caching Plugin)

I tested my site before installing a caching plugin with https://www.webpagetest.org/ and my site was loading in 21s (loading over 141 files).

My site loaded in a terrible 21.3 seconds. My blog is hosted on Jumba (Net Registry) on and Ultimate plan for $25 a month.

My site seems to deliver 70% images so I wonder if a page caching plugin can help?

I do run the EWWW Image Optimizer plugin to automatically compress images when I upload them to my site. Read my blog post on the EWWW Image Optimizer here.  I do keep images at a high quality to capture all details.

WP Fastest Cache Plugin

I have decided to try the WP Fastest Cache because it’s source was updated 4 hours ago compared to WP Super Cahches update 5 months ago. Both these plugins offer similar GT Metrix performance improvements and WP Fastest Cache has been tested on WordPress v4.8.

Installing WP Fastest Cache

I looked for the WP Fastest Cache Plugin on the WP plugin directory but it was not there.

I downloaded the latest version WP Fastest Cache from https://wordpress.org/plugins/wp-fastest-cache/

I upload the WP Faster Cache plugin to my site.

I Activated the plugin.

WP Fastest Cache plugin is now installed 🙂

It appears to have auto cached/indexed my site?

Now it’s time to run the same benchmark and see if the site is faster (with the same settings (Singapore chrome))?

1 of 3 test are underway.

WP Fastest Cache Results

Wow WP Fastest Cache loaded my site 2 seconds slower (Try 1 = 23 seconds, Try 2 =  21 seconds and Try 3 =  28 Seconds).

This could have been because of weekend traffic or hosting issues but this was not what I expected.

I disabled the WP Fastest Cache plugin and ran the benchmarks again and it was still 23 seconds (weekend traffic?). I re-enabled WP Fastest Cache and re-ran the test but no improvement.

My bad I think I needed to manually configure the WP Faster Cache plugin by opening the new WP Faster Cache menu on the left-hand side of the WP admin dashboard.

There I enabled caching options in the WP Faster Cache options.

I ran https://www.webpagetest.org tests again and got 16s, 18s and 16s seconds results in three tests and an A on compressed images. It appears you need to manually configure the WP Total Cache plugin after installing it (I missed this step).

I disable WP Fastest Cache and tried the WP Super Cache plugin and the test results were 29s, 24s, 24s (slower than WP Faster Cache). then tried W3 Total cache and the results were ()

I tried the W3 Total Cache plugin and the results were (30s, 16s 26s).

I Tried Autoptimize and it was tested at 45s.

It looks like WP Faster Cache is the fastest, ill turn it back on until try setup a CDN.

Fast Forward to Sept 2017

Since writing this post I have moved away from a shared C-Panel host and have moved my domain to a self-managed Vultr server closer to me, I have moved my email to Google G-Suite. I have learned how to deploy and manage WordPress by command-line tools. I have set up servers on Digital Ocean before but the servers are located in Singapore and not Sydney and latency and scalability was poor. SSL will make sites slower and servers far away will just compound the issues.

Re-enabling the WP Fastest Cache Plugin

I tried reinstalling the WP Fastest Cache plugin and for me, the plugin just slows down my site by 6 seconds.

I opened my NGINX config and got my NGINX user

sudo nano /etc/nginx/nginx.conf

My user is: www-data

I enabled the WP Fastest Cache plugin and ensured the WP Fastest Cache has ownership and access to the cache folder.

sudo chown www-data:www-data /www/wp-content/plugins/cache
sudo chown www-data:www-data /www//wp-content/plugins/cache/all
sudo chmod 755 /www/wp-content/plugins/cache *
sudo chmod 755 /www/wp-content/plugins/cache/all *

Below are the settings I use.

WP Fastest Cache

installing the WP-Optimize Plugin

I recommend setting up WP-Optimize plugin as it will optimize your database and keep things fast, it only saves me a second on my load times but this helps.

WP Optimize

WP-Optimize will allow for to review database optimizations

WP-Optimize database savings

Setting up Nginx GZip Compression

I set up my Nginx config to include

gzip on;
gzip_disable "msie6";

gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

I set the minimum size to gzip too

gzip_min_length 20;

Benchmark with G-Zip, Caching and WP Fastest Cache 

With WP Fastest Cache I now load my site in 13.9 seconds from Singapore. Time to disable WP Fastest cache plugin as it does not seem to be helping without linking to a CDN.

With Cache plugi

Setting up Browser Caching

I also setup browser caching by editing in NginX.

sudo nano /etc/nginx/sites-available/default

Added

location ~*  \.(jpg|jpeg|png|gif|ico|svg|js|css)$ {
        expires 365d;
}

Not sure if caching CSS and JS will cause problems in future?

Benchmark with G-Zip, Caching and without WP Fastest Cache (Singapore)

I re-ran the tests and got 10.9 seconds and got a B for cached content. When in Started on C-Panel I was getting near 30s

Benchmark

Benchmark with G-Zip, Caching and without WP Fastest Cache (Sydney)

I have always benchmarked from Singapore (as Sydney was not an option when I started) but now it is.  Out f curiosity is my website load time in Sydney?

8.2 seconds. Distance does affect performance.

Google Speed Insights

Google has awesome tools to help you increase your benchmark mobile and desktop website speeds and recommend focus areas to resolve problems: https://developers.google.com/speed/pagespeed/insights/

Mobile Speed Score

Desktop Speed Score

Tips

I was getting SVG files failing compassion tests so I added the following under allowed mime types under “http gzip_types” in /etc/nginx/nginx.conf

image/svg+xml text/html+svg

Minifying JS and CSS

This needs to be done and 50% of my site files appears to be CSS and JS related.

It looks like 30%~40 of your sites google speed index is related to minified/combined JS/CSS.

Google Speed Test

I installed the Fast Velocity Minify WordPress plugin.

I ran this to install it from the command line

cd /www/wp-content/plugins#
sudo wget https://downloads.wordpress.org/plugin/fast-velocity-minify.2.2.1.zip
--2017-09-23 19:51:46--  https://downloads.wordpress.org/plugin/fast-velocity-minify.2.2.1.zip
Resolving downloads.wordpress.org (downloads.wordpress.org)... 66.155.40.187, 66.155.40.203, 66.155.40.188, ...
Connecting to downloads.wordpress.org (downloads.wordpress.org)|66.155.40.187|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 821621 (802K) [application/octet-stream]
Saving to: ‘fast-velocity-minify.2.2.1.zip’

fast-velocity-minify.2.2.1.zip 100%[=================================================>] 802.36K   830KB/s    in 1.0s

2017-09-23 19:51:47 (830 KB/s) - ‘fast-velocity-minify.2.2.1.zip’ saved [821621/821621]

Unzip

sudo unzip merge-minify-refresh.zip

I activated the plugin and set some settings

Minify Settings

Verified minify logs

Logs

Google Page Insights can now see the minifies, css, js and html

Minified

Google Page Insights – Possible Optimizations

issues

And Google Ad Words and Google Analytics appear to be holding back Google Page Insight scores

Google adwords and Analytics

I am getting a few false positives with plugins javascript but that can be resolved another day.

Pingdom (Melbourne results)

3.2 seconds, a few false positives though.

Kingdom

I was going to test with https://www.webpagetest.org/ (from Singapore) but the service kept stalling and had too many tests before me (even from Sydney).

Wait

Address First Byte Time (todo)

If I look at the first-byte load results in the waterfall view my site is taking many seconds to deliver the first byte, this lowers the performance scores about 20%. I need to set up a CDN and or configure NGINX following this guide based on this manual configuration entry (I tried some of the Nginx settings but it appears I need to compile some performance settings into Nginx).

CDN (todo)

I am sure a Content Delivery Network (CDN) will help with the whole page deliver and first-byte times but I am trying to milk as much free as possible and limit future costs. A CDN will trigger higher monthly costs (any CDN providers want to donate a temporary pro plan for review purposes).

Misc Speed Articles

  • Yoast has a good site speed article here: https://yoast.com/site-speed-tools-suggestions/
  • Nginx has a good guide on Nginx performance here: https://www.nginx.com/blog/10-tips-for-10x-application-performance/
  • Google PageSpeed tips: https://developers.google.com/speed/docs/insights/rules

Configuring Ubuntu for Performance

Preventing applications swapping for disk (read more here)

sudo nano /etc/sysctl.conf

I added this memory-related setting.

vm.swappiness = 1

This will all but prevent applications writing to disk (swap) when they are not active. I had free memory on my VM so I may as well use it.

I will monitor the free ram after reboot and play with php memory settings.

ram

Setup Lazyload for images in posts

cd /www/wp-content/plugins/
sudo wget https://downloads.wordpress.org/plugin/bj-lazy-load.zip
unzip bj-lazy-load.zip
# activate the plugin

Lazyload Plugin Settings

Lazyload

Placeholder Image ( Image: https://fearby.com/wp-content/uploads/2017/09/placeholder.jpg )

Web Performance Test from Sydney

8.4 seconds ( Score Card F A A A C, was F F F A F ).  I was getting up to 28 second load times with Net Registry C Panel servers.

Static Content is cached but Googe Ad Sence, Google Analytics, and some plugins do block the score. The front page does have some features content that has to be loaded and can’t be minified or cached much.

Sydney Results

It is obvious I need to work in the initial websitee load (DNS, CDN or SSL), there sis  3 seconds I can save here.

3 sec

Configuring PHP for Performance

todo: PHP base config.

todo: PHP caching.

Conclusion

I was expecting WP Fastest Cache to deliver faster speeds but in reality but I am getting 4 seconds faster in WordPress. I was going to configure MaxCDN but they are to expensive. Fast Velocity Minify Plugin is working a treat 🙂

I ended up ditching the shared CPanel hosted domain and setup my own server for WordPress. My site seems a lot faster now. A friend set up CloudFlare with great success, more soon. I blogged about my server setup here.

Adding browser cache and compressing and moving away from CPanel to a self-managed server helped.

The only things to try now is to use a CDN and speed up the delivery of my site and improve the First Byte Time.

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Revision History

v1.932 added lazy load information (24th Sep 2017)

v1.952 added small changes (23rd Sep 2017)

etc

Filed Under: Blog, Cache, Cloud, Domain, Software, Wordpress Tagged With: cache, cdn, plugin, speed, website, wordpress

Securing Ubuntu in the cloud

August 9, 2017 by Simon

It is easy to deploy servers to the cloud within a few minutes, you can have a cloud-based server that you (or others can use). ubuntu has a great guide on setting up basic security issues but what do you need to do.

If you do not secure your server expects it to be hacked into. Below are tips on securing your cloud server.

First, read more on scanning your server with Lynis security scan.

Always use up to date software

Always use update software, malicious users can detect what software you use with sites like shodan.io (or use port scan tools) and then look for weaknesses from well-published lists (e.g WordPress, Windows, MySQL, node, LifeRay, Oracle etc). People can even use Google to search for login pages or sites with passwords in HTML (yes that simple).  Once a system is identified by a malicious user they can send automated bots to break into your site (trying millions of passwords a day) or use tools to bypass existing defences (Security researcher Troy Hunt found out it’s child’s play).

Portscan sites like https://mxtoolbox.com/SuperTool.aspx?action=scan are good for knowing what you have exposed.

You can also use local programs like nmap to view open ports

Instal nmap

sudo apt-get install nmap

Find open ports

nmap -v -sT localhost

Starting Nmap 7.01 ( https://nmap.org ) at 2017-08-08 23:57 AEST
Initiating Connect Scan at 23:57
Scanning localhost (127.0.0.1) [1000 ports]
Discovered open port 80/tcp on 127.0.0.1
Discovered open port 3306/tcp on 127.0.0.1
Discovered open port 22/tcp on 127.0.0.1
Discovered open port 9101/tcp on 127.0.0.1
Discovered open port 9102/tcp on 127.0.0.1
Discovered open port 9103/tcp on 127.0.0.1
Completed Connect Scan at 23:57, 0.05s elapsed (1000 total ports)
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00020s latency).
Not shown: 994 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
3306/tcp open  mysql
9101/tcp open  jetdirect
9102/tcp open  jetdirect
9103/tcp open  jetdirect

Read data files from: /usr/bin/../share/nmap
Nmap done: 1 IP address (1 host up) scanned in 0.17 seconds
           Raw packets sent: 0 (0B) | Rcvd: 0 (0B)

Limit ssh connections

Read more here.

Use ufw to set limits on login attempts

sudo ufw limit ssh comment 'Rate limit hit for openssh server'

Only allow known IP’s access to your valuable ports

sudo ufw allow from 123.123.123.123/32 to any port 22

Delete unwanted firewall rules

sudo ufw status numbered
sudo ufw delete 8

Only allow known IP’s to certain ports

sudo ufw allow from 123.123.123.123 to any port 80/tcp

Also, set outgoing traffic to known active servers and ports

sudo ufw allow out from 123.123.123.123 to any port 22

Don’t use weak/common Diffie-Hellman key for SSL certificates, more information here.

openssl req -new -newkey rsa:4096 -nodes -keyout server.key -out server.csr
 
Generating a 4096 bit RSA private key
...

More info on generating SSL certs here and setting here and setting up Public Key Pinning here.

Intrusion Prevention Software

Do run fail2ban: Guide here https://www.linode.com/docs/security/using-fail2ban-for-security

I use iThemes Security to secure my WordPress and block repeat failed logins from certain IP addresses.

iThemes Security can even lock down your WordPress.

You can set iThemes to auto lock out users on x failed logins

Remember to use allowed whitelists though (it is so easy to lock yourself out of servers).

Passwords

Do have strong passwords and change the root password provided by the hosts. https://howsecureismypassword.net/ is a good site to see how strong your password is from brute force password attempts. https://www.grc.com/passwords.htm is a good site to obtain a strong password.  Do follow Troy Hunt’s blog and twitter account to keep up to date with security issues.

Configure a Firewall Basics

You should install a firewall on your Ubuntu and configure it and also configure a firewall with your hosts (e.g AWS, Vultr, Digital Ocean).

Configure a Firewall on AWS

My AWS server setup guide here. AWS allow you to configure the firewall here in the Amazon Console.

Type Protocol Port Range Source Comment
HTTP TCP 80 0.0.0.0/0 Opens a web server port for later
All ICMP ALL N/A 0.0.0.0/0 Allows you to ping
All traffic ALL All 0.0.0.0/0 Not advisable long term but OK for testing today.
SSH TCP 22 0.0.0.0/0 Not advisable, try and limit this to known IP’s only.
HTTPS TCP 443 0.0.0.0/0 Opens a secure web server port for later

Configure a Firewall on Digital Ocean

Configuring a firewall on Digital Ocean (create a $5/m server here).  You can configure your Digital Ocean droplet firewall by clicking Droplet, Networking then Manage Firewall after logging into Digital Ocean.

Configure a Firewall on Vultr

Configuring a firewall on Vultr (create a $2.5/m server here).

Don’t forget to set IP rules for IPV4 and IPV6, Only set the post you need to allow and ensure applications have strong passwords.

Ubuntu has a firewall built in (documentation).

sudo ufw status

Enable the firewall

sudo ufw enable

Adding common ports

sudo ufw allow ssh/tcp
sudo ufw logging on
sudo ufw allow 22
sudo ufw allow 80
sudo ufw allow 53
sudo ufw allow 443
sudo ufw allow 873
sudo ufw enable
sudo ufw status
sudo ufw allow http
sudo ufw allow https

Add a whitelist for your IP (use http://icanhazip.com/ to get your IP) to ensure you won’t get kicked out of your server.

sudo ufw allow from 123.123.123.123/24 to any port 22

More help here.  Here is a  good guide on ufw commands. Info on port numbers here.

https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

If you don’t have a  Digital Ocean server for $5 a month click here and if a $2.5 a month Vultr server here.

Backups

rsync is a good way to copy files to another server or use Bacula

sudo apt install bacula

Basics

Initial server setup guide (Digital Ocean).

Sudo (admin user)

Read this guide on the Linux sudo command (the equivalent if run as administrator on Windows).

Users

List users on an Ubuntu OS (or compgen -u)

cut -d: -f1 /etc/passwd

Common output

cut -d: -f1 /etc/passwd
root
daemon
bin
sys
sync
games
man
lp
mail
news
uucp
proxy
www-data
backup
list
irc
gnats
nobody
systemd-timesync
systemd-network
systemd-resolve
systemd-bus-proxy
syslog
_apt
lxd
messagebus
uuidd
dnsmasq
sshd
pollinate
ntp
mysql
clamav

Add User

sudo adduser new_username

e.g

sudo adduser bob
Adding user `bob' ...
Adding new group `bob' (1000) ...
Adding new user `bob' (1000) with group `bob' ...
Creating home directory `/home/bob' ...
etc..

Add user to a group

sudo usermod -a -G MyGroup bob

Show users in a group

getent group MyGroup | awk -F: '{print $4}'

This will show users in a group

Remove a user

sudo userdel username
sudo rm -r /home/username

Rename user

usermod -l new_username old_username

Change user password

sudo passwd username

Groups

Show all groups

compgen -ug

Common output

compgen -g
root
daemon
bin
sys
adm
tty
disk
lp
mail
proxy
sudo
www-data
backup
irc
etc

You can create your own groups but first, you must be aware of group ids

cat /etc/group

Then you can see your systems groups and ids.

Create a group

groupadd -g 999 MyGroup

Permissions

Read this https://help.ubuntu.com/community/FilePermissions

How to list users on Ubuntu.

Read more on setting permissions here.

Chmod help can be found here.

Install Fail2Ban

I used this guide on installing Fail2Ban.

apt-get install fail2ban

Check Fail2Ban often and add blocks to the firewall of known bad IPs

fail2ban-client status

Best practices

Ubuntu has a guide on basic security setup here.

Startup Processes

It is a good idea to review startup processes from time to time.

sudo apt-get install rcconf
sudo rcconf

Accounts

  • Read up on the concept of least privilege access for apps and services here.
  • Read up on chmod permissions.

Updates

Do update your operating system often.

sudo apt-get update
sudo apt-get upgrade

Minimal software

Only install what software you need

Exploits and Keeping up to date

Do keep up to date with exploits and vulnerabilities

  • Follow 0xDUDE on twitter.
  • Read the GDI.Foundation page.
  • Visit the Exploit Database
  • Vulnerability & Exploit Database
  • Subscribe to the Security Now podcast.

Secure your applications

  • NodeJS: Enable logging in applications you install or develop.

Ban repeat Login attempts with FailBan

Fail2Ban config

sudo nano /etc/fail2ban/jail.conf
[sshd]

enabled  = true
port     = ssh
filter   = sshd
logpath  = /var/log/auth.log
maxretry = 3

Hosts File Hardening

sudo nano /etc/host.conf

Add

order bind,hosts
nospoof on

Add a whitelist with your ip on /etc/fail2ban/jail.conf (see this)

[DEFAULT]
# "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not                          
# ban a host which matches an address in this list. Several addresses can be                             
# defined using space separator.
                                                                         
ignoreip = 127.0.0.1 192.168.1.0/24 8.8.8.8

Restart the service

sudo service fail2ban restart
sudo service fail2ban status

Intrusion detection (logging) systems

Tripwire will not block or prevent intrusions but it will log and give you a heads up with risks and things of concern

Install Tripwire.

sudo apt-get install tiger tripwire

Running Tripwire

sudo tiger

This will scan your system for issues of note

sudo tiger
Tiger UN*X security checking system
   Developed by Texas A&M University, 1994
   Updated by the Advanced Research Corporation, 1999-2002
   Further updated by Javier Fernandez-Sanguino, 2001-2015
   Contributions by Francisco Manuel Garcia Claramonte, 2009-2010
   Covered by the GNU General Public License (GPL)

Configuring...

Will try to check using config for 'x86_64' running Linux 4.4.0-89-generic...
--CONFIG-- [con005c] Using configuration files for Linux 4.4.0-89-generic. Using
           configuration files for generic Linux 4.
Tiger security scripts *** 3.2.3, 2008.09.10.09.30 ***
20:42> Beginning security report for simon.
20:42> Starting file systems scans in background...
20:42> Checking password files...
20:42> Checking group files...
20:42> Checking user accounts...
20:42> Checking .rhosts files...
20:42> Checking .netrc files...
20:42> Checking ttytab, securetty, and login configuration files...
20:42> Checking PATH settings...
20:42> Checking anonymous ftp setup...
20:42> Checking mail aliases...
20:42> Checking cron entries...
20:42> Checking 'services' configuration...
20:42> Checking NFS export entries...
20:42> Checking permissions and ownership of system files...
--CONFIG-- [con010c] Filesystem 'fuse.lxcfs' used by 'lxcfs' is not recognised as a valid filesystem
20:42> Checking for indications of break-in...
--CONFIG-- [con010c] Filesystem 'fuse.lxcfs' used by 'lxcfs' is not recognised as a valid filesystem
20:42> Performing rootkit checks...
20:42> Performing system specific checks...
20:46> Performing root directory checks...
20:46> Checking for secure backup devices...
20:46> Checking for the presence of log files...
20:46> Checking for the setting of user's umask...
20:46> Checking for listening processes...
20:46> Checking SSHD's configuration...
20:46> Checking the printers control file...
20:46> Checking ftpusers configuration...
20:46> Checking NTP configuration...
20:46> Waiting for filesystems scans to complete...
20:46> Filesystems scans completed...
20:46> Performing check of embedded pathnames...
20:47> Security report completed for simon.
Security report is in `/var/log/tiger/security.report.simon.170809-20:42'.

My Output.

sudo nano /var/log/tiger/security.report.username.170809-18:42

Security scripts *** 3.2.3, 2008.09.10.09.30 ***
Wed Aug  9 18:42:24 AEST 2017
20:42> Beginning security report for username (x86_64 Linux 4.4.0-89-generic).

# Performing check of passwd files...
# Checking entries from /etc/passwd.
--WARN-- [pass014w] Login (bob) is disabled, but has a valid shell.
--WARN-- [pass014w] Login (root) is disabled, but has a valid shell.
--WARN-- [pass015w] Login ID sync does not have a valid shell (/bin/sync).
--WARN-- [pass012w] Home directory /nonexistent exists multiple times (3) in
         /etc/passwd.
--WARN-- [pass012w] Home directory /run/systemd exists multiple times (2) in
         /etc/passwd.
--WARN-- [pass006w] Integrity of password files questionable (/usr/sbin/pwck
         -r).

# Performing check of group files...

# Performing check of user accounts...
# Checking accounts from /etc/passwd.
--WARN-- [acc021w] Login ID dnsmasq appears to be a dormant account.
--WARN-- [acc022w] Login ID nobody home directory (/nonexistent) is not
         accessible.

# Performing check of /etc/hosts.equiv and .rhosts files...

# Checking accounts from /etc/passwd...

# Performing check of .netrc files...

# Checking accounts from /etc/passwd...

# Performing common access checks for root (in /etc/default/login, /securetty, and /etc/ttytab...
--WARN-- [root001w] Remote root login allowed in /etc/ssh/sshd_config

# Performing check of PATH components...
--WARN-- [path009w] /etc/profile does not export an initial setting for PATH.
# Only checking user 'root'

# Performing check of anonymous FTP...

# Performing checks of mail aliases...
# Checking aliases from /etc/aliases.

# Performing check of `cron' entries...
--WARN-- [cron005w] Use of cron is not restricted

# Performing check of 'services' ...
# Checking services from /etc/services.
--WARN-- [inet003w] The port for service ssmtp is also assigned to service
         urd.
--WARN-- [inet003w] The port for service pipe-server is also assigned to
         service search.

# Performing NFS exports check...

# Performing check of system file permissions...
--ALERT-- [perm023a] /bin/su is setuid to `root'.
--ALERT-- [perm023a] /usr/bin/at is setuid to `daemon'.
--ALERT-- [perm024a] /usr/bin/at is setgid to `daemon'.
--WARN-- [perm001w] The owner of /usr/bin/at should be root (owned by daemon).
--WARN-- [perm002w] The group owner of /usr/bin/at should be root.
--ALERT-- [perm023a] /usr/bin/passwd is setuid to `root'.
--ALERT-- [perm024a] /usr/bin/wall is setgid to `tty'.

# Checking for known intrusion signs...
# Testing for promiscuous interfaces with /bin/ip
# Testing for backdoors in inetd.conf

# Performing check of files in system mail spool...

# Performing check for rookits...
# Running chkrootkit (/usr/sbin/chkrootkit) to perform further checks...
--WARN-- [rootkit004w] Chkrootkit has detected a possible rootkit installation
Possible Linux/Ebury - Operation Windigo installetd

# Performing system specific checks...
# Performing checks for Linux/4...

# Checking boot loader file permissions...
--WARN-- [boot02] The configuration file /boot/grub/menu.lst has group
         permissions. Should be 0600
--FAIL-- [boot02] The configuration file /boot/grub/menu.lst has world
         permissions. Should be 0600
--WARN-- [boot06] The Grub bootloader does not have a password configured.

# Checking for vulnerabilities in inittab configuration...

# Checking for correct umask settings for init scripts...
--WARN-- [misc021w] There are no umask entries in /etc/init.d/rcS

# Checking Logins not used on the system ...

# Checking network configuration
--FAIL-- [lin013f] The system is not protected against Syn flooding attacks
--WARN-- [lin017w] The system is not configured to log suspicious (martian)
         packets

# Verifying system specific password checks...

# Checking OS release...
--WARN-- [osv004w] Unreleased Debian GNU/Linux version `stretch/sid'

# Checking installed packages vs Debian Security Advisories...

# Checking md5sums of installed files

# Checking installed files against packages...
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.dep' does not
         belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.alias.bin' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.devname' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.softdep' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.alias' does not
         belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.symbols.bin'
         does not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.builtin.bin'
         does not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.symbols' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-87-generic/modules.dep.bin' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.dep' does not
         belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.alias.bin' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.devname' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.softdep' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.alias' does not
         belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.symbols.bin'
         does not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.builtin.bin'
         does not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.symbols' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/modules/4.4.0-89-generic/modules.dep.bin' does
         not belong to any package.
--WARN-- [lin001w] File `/lib/udev/hwdb.bin' does not belong to any package.

# Performing check of root directory...

# Checking device permissions...
--WARN-- [dev003w] The directory /dev/block resides in a device directory.
--WARN-- [dev003w] The directory /dev/char resides in a device directory.
--WARN-- [dev003w] The directory /dev/cpu resides in a device directory.
--FAIL-- [dev002f] /dev/fuse has world permissions
--WARN-- [dev003w] The directory /dev/hugepages resides in a device directory.
--FAIL-- [dev002f] /dev/kmsg has world permissions
--WARN-- [dev003w] The directory /dev/lightnvm resides in a device directory.
--WARN-- [dev003w] The directory /dev/mqueue resides in a device directory.
--FAIL-- [dev002f] /dev/rfkill has world permissions
--WARN-- [dev003w] The directory /dev/vfio resides in a device directory.

# Checking for existence of log files...
--FAIL-- [logf005f] Log file /var/log/btmp permission should be 660
--FAIL-- [logf007f] Log file /var/log/messages does not exist

# Checking for correct umask settings for user login shells...
--WARN-- [misc021w] There is no umask definition for the dash shell
--WARN-- [misc021w] There is no umask definition for the bash shell

# Checking symbolic links...

# Performing check of embedded pathnames...
20:47> Security report completed for username.

More on Tripwire here.

Hardening PHP

Hardening PHP config (and backing the PHP config it up), first create an info.php file in your website root folder with this info

<?php
phpinfo()
?>

Now look for what PHP file is loadingPHP Config

Back that your PHP config file

TIP: Delete the file with phpinfo() in it as it is a security risk to leave it there.

TIP: Read the OWASP cheat sheet on using PHP securely here and securing php.ini here.

Some common security changes

file_uploads = On
expose_php = Off
error_reporting = E_ALL
display_errors          = Off
display_startup_errors  = Off
log_errors              = On
error_log = /php_errors.log
ignore_repeated_errors  = Off

Don’t forget to review logs, more config changes here.

Antivirus

Yes, it is a good idea to run antivirus in Ubuntu, here is a good list of antivirus software

I am installing ClamAV as it can be installed on the command line and is open source.

sudo apt-get install clamav

ClamAV help here.

Scan a folder

sudo clamscan --max-filesize=3999M --max-scansize=3999M --exclude-dir=/www/* -i -r /

Setup auto-update antivirus definitions

sudo dpkg-reconfigure clamav-freshclam

I set auto updates 24 times a day (every hour) via daemon updates.

tip: Download manual antivirus update definitions. If you only have a 512MB server your update may fail and you may want to stop fresh claim/php/nginx and mysql before you update to ensure the antivirus definitions update. You can move this to a con job and set this to update at set times over daemon to ensure updates happen.

sudo /etc/init.d/clamav-freshclam stop

sudo service php7.0-fpm stop
sudo /etc/init.d/nginx stop
sudo /etc/init.d/mysql stop

sudo freshclam -v
Current working dir is /var/lib/clamav
Max retries == 5
ClamAV update process started at Tue Aug  8 22:22:02 2017
Using IPv6 aware code
Querying current.cvd.clamav.net
TTL: 1152
Software version from DNS: 0.99.2
Retrieving http://db.au.clamav.net/main.cvd
Trying to download http://db.au.clamav.net/main.cvd (IP: 193.1.193.64)
Downloading main.cvd [100%]
Loading signatures from main.cvd
Properly loaded 4566249 signatures from new main.cvd
main.cvd updated (version: 58, sigs: 4566249, f-level: 60, builder: sigmgr)
Querying main.58.82.1.0.C101C140.ping.clamav.net
Retrieving http://db.au.clamav.net/daily.cvd
Trying to download http://db.au.clamav.net/daily.cvd (IP: 193.1.193.64)
Downloading daily.cvd [100%]
Loading signatures from daily.cvd
Properly loaded 1742284 signatures from new daily.cvd
daily.cvd updated (version: 23644, sigs: 1742284, f-level: 63, builder: neo)
Querying daily.23644.82.1.0.C101C140.ping.clamav.net
Retrieving http://db.au.clamav.net/bytecode.cvd
Trying to download http://db.au.clamav.net/bytecode.cvd (IP: 193.1.193.64)
Downloading bytecode.cvd [100%]
Loading signatures from bytecode.cvd
Properly loaded 66 signatures from new bytecode.cvd
bytecode.cvd updated (version: 308, sigs: 66, f-level: 63, builder: anvilleg)
Querying bytecode.308.82.1.0.C101C140.ping.clamav.net
Database updated (6308599 signatures) from db.au.clamav.net (IP: 193.1.193.64)

sudo service php7.0-fpm restart
sudo /etc/init.d/nginx restart
sudo /etc/init.d/mysql restart 

sudo /etc/init.d/clamav-freshclam start

Manual scan with a bash script

Create a bash script

mkdir /script
sudo nano /scripts/updateandscanav.sh

# Include contents below.
# Save and quit

chmod +X /scripts/updateandscanav.sh

Bash script contents to update antivirus definitions.

sudo /etc/init.d/clamav-freshclam stop

sudo service php7.0-fpm stop
sudo /etc/init.d/nginx stop
sudo /etc/init.d/mysql stop

sudo freshclam -v

sudo service php7.0-fpm restart
sudo /etc/init.d/nginx restart
sudo /etc/init.d/mysql restart

sudo /etc/init.d/clamav-freshclam start

sudo clamscan --max-filesize=3999M --max-scansize=3999M -v -r /

Edit the crontab to run the script every hour

crontab -e
1 * * * * /bin/bash /scripts/updateandscanav.sh > /dev/null 2>&1

Uninstalling Clam AV

You may need to uninstall Clamav if you don’t have a lot of memory or find updates are too big.

sudo apt-get remove --auto-remove clamav
sudo apt-get purge --auto-remove clamav

Setup Unattended Ubuntu Security updates

sudo apt-get install unattended-upgrades
sudo unattended-upgrades -d

At login, you should receive

0 updates are security updates.

Other

  • Read this awesome guide.
  • install Fail2Ban
  • Do check your log files if you suspect suspicious activity.

Check out the extensive Hardening a Linux Server guide at thecloud.org.uk: https://thecloud.org.uk/wiki/index.php?title=Hardening_a_Linux_Server

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How to develop software ideas

July 9, 2017 by Simon

I was recently at a public talk by Alan Jones at the UNE Smart Region Incubator where Alan talked about launching startups and developing ideas.

Alan put it quite eloquently that “With change comes opportunity” and we are all very capable of building the next best thing as technological barriers and costs are a lot lower than 5 years ago but Alan also mentioned 19 start-ups-ups fail but “if you focus on solving customer problems you have a better chance of succeeding”. Regions need to share knowledge and you can learn from other peoples mistakes.”

I was asked after this event to share thoughts on “how do I learn to develop an app” and “how do you get the knowledge”. Here is my poor “brain dump” on how to develop software ideas (It’s hard to condense 30 years experience developing software). I will revise this post over the coming weeks so check back often.

If you have never programmed before check out this programming 101 guides here.

I have blogged on technology/knowledge things in the past at www.fearby.com and recently I blogged about how to develop cloud-based services (here, here, here, here and here) but this blog post assumes you have a validated “app idea” and you want to know how to develop yourself. If you do not want to develop an app yourself you may want to speak with Blue Chilli.

Find a good mentor.


True App Development Quotes

  • Finding development information is easy, following a plan is hard.
  • Aim for progress and not perfection.
  • Learn one thing at a time (Multitasking can kill your brain).
  • Fail fast and fail early and get feedback as early as possible from customers.
  • 10 engaged customers are better than 10,000 disengaged users.

And a bit of humour before we start.

Project Mangement Lol

(click for larger image)

Here is a funny video on startup/entrepreneur life/lingo


This is a good funny, open and honest video about programming on YouTube.

Follow Seth F Samuel on twitter here.

Don’t be afraid to learn from others before you develop

My fav tips from over 200 failed startups (from https://www.cbinsights.com/blog/startup-failure-post-mortem/ )

  • Simpler websites shouldn’t take more than 2-3 months.You can always iterate and extrapolate later. Wet your feet asap
  • As products became more and more complex, the performance degrades. Speed is a feature for all web apps. You can spend hundreds of hours trying to speed of the app with little success. Benchmarking tools incorporated into the development cycle from the beginning is a good idea
  • Outsource or buy in talent if you don’t know something (e.g marketing). Time is money.
  • Make an environment where you will be productive. Working from home can be convenient, but often times will be much less productive than a separate space. Also it’s a good idea to have separate spaces so you’ll have some work/life balance.
  • Not giving enough time to stress and load testing or leaving it until the last minute is something startups are known for — especially true of small teams — but it means things tend to get pretty tricky at scale, particularly if you start adding a user every four seconds.
  • It’s possible to make a little money from a lot of people, or a lot of money from a few people. Making a little money from a few people doesn’t add up. If you’re not selling something, you better have a LOT of eyeballs. We didn’t.
  • We received conflicting advice from lots of smart people about which is more important. We focused on engagement, which we improved by orders of magnitude. No one cared. Lesson learned: Growth is the only thing that matters if you are building a social network. Period. Engagement is great but you aren’t even going to get the meeting unless your top-line numbers reach a certain threshold (which is different for seed vs. series A vs. selling advertising).
  • We most definitely committed the all-too-common sin of premature scaling. Driven by the desire to hit significant numbers to prove the road for future fundraising and encouraged by our great initial traction in the student market, we embarked on significant work developing paid marketing channels and distribution channels that we could use to demonstrate scalable customer acquisition. This all fell flat due to our lack of product/market fit in the new markets, distracted significantly from product work to fix the fit (double fail) and cost a whole bunch of our runway.
  • If you’re bootstrapping, cash flow is king. If you want to possibly build a product while your revenue is coming from other sources, you have to get those sources stable before you can focus on the product.
  • Don’t multiply big numbers. Multiply $30 times 1.000 clients times 24 months. WOW, we will be rich! Oh, silly you, you have no idea how hard it is to get 1.000 clients paying anything monthly for 24 months. Here is my advice: get your first client. Then get your first 10. Then get more and more. Until you have your first 10 clients, you have proved nothing, only that you can multiply numbers.
  • Customers pay for information, not raw data. Customers are willing to pay a lot more for information and most are not interested in data. Your service should make your customers look intelligent in front of their stakeholders. Follow up with inactive users. This is especially true when your service does not give intermediate values to your users. Our system should have been smarter about checking up on our users at various stages.
  • Do not launch a startup if you do not have enough funding for multiple iterations. The chances of getting it right the first time are about the equivalent of winning the lotto.

Here are my tips on staying on track developing apps. What is the difference between a website, app, API, web app, hybrid app and software (my blog post here)?

I have seen quite a few projects fail because:

  • The wrong technology was mandated.
  • The software was not documented (by the developers).
  • The software was shelved because new developers hated it or did not want to support it.

Project Roles (hats)

It is important to understand the roles in a project (project management methodology aside) and know when you are being a “decision maker” or a “technical developer”. A project usually has these roles.

  • Sponsor/owner (usually fund the project and have the final say).
  • Executive/Team leader/scrum master (manage day to day operations, people, tasks and resources).
  • Team members (UI, UX, Marketers, Developers (DevOps, Web, Design etc) are usually the doers.
  • Stakeholders (people who are impacted (operations, owners, Helpdesk)).
  • Subject Matter Experts (people who should guide the work and not be ignored).
  • Testers (people who test the product and give feedback).

It can be hard as a developer to switch hats in a one-person team.

How do you develop and gain knowledge?

First, document what you need to develop (what problem are you solving and what value will your idea bring). Does this solution exist already? Don’t solve a problem that already exists.

Developing software is not hard, you just need to be logical, research, be patient and follow a plan. The hardest part can be gluing components together.

I like to think of developing software like making a car if you need 4 wheels do you have 4 wheels? If you want to build it yourself and save some money can you make wheels (make rubber strips with steel reinforced/vulcanized rubber, make alloys and add bearings and have them pass regulations) or should you buy wheels (some things are cheaper to make than other things)? Developing software can be easy if you know what your are doing and have the experience and are aware of the costs and risks.  Developing software can lead you down a rabbit hole of endless research, development, and testing if you don’t know what you are doing.

Examples 1:

I “need a webpage”:

  • Research: Will Wix, Shopify or a hosted WordPress website do (is it flexible or cheap enough) or do I install WordPress (guide here) or do I  learn and build an HTML website and buy a theme and modify it (and have a custom/flexible solution)?

Example 2:

I “need an iPhone and Android app”:

Research: You will need to learn iOS and Android programming and you may need a server or two to hold the apps data, webpage and API. You will also need to set up and secure the servers or choose to install a database or go with a “database as a service” like cloud.mongodb.com or google firebase.

Money can buy anything (but will it be flexible/cheap enough), time can build anything (but will it be secure enough).

Developing software can be easy if you know what your are doing and have the experience and are aware of the costs and risks but developing software can lead you down a rabbit hole of endless research, development and testing if you don’t know what you are doing.

Almost all systems will need a central database to store all data, you can choose a traditional relational SQL database or a newer NoSQL database. MySQL is a good/cheap relational SQL database and MongoDB is a good NoSQL database. You will need to decide on how your app talks to the database (directly or via an API (protected by OAuth or limited access tokens)).  It is a bad idea to open a database directly to the world with no security. Sites like www.shodan.io will automatically scan the Internet looking for open databases or systems and report this as an insecure site to anyone. It is in your interest to develop secure systems in all stages of development.

CRUD (Create, Read, Update and Delete) is a common group of database tasks that you can do to prove you can read, write, update and delete from a database. While performing CRUD operations is a good to benchmark to also see how fast the database it.  if a database is the slowest link then you can use memory to cache database values (read my guide here). Caching can turn a cheap server into a faster server. Learning by doing can quickly build skills so “research”, “do” and “learn”.

Most solutions will need a website (and a web server). Here is a good article comparing Apache and Nginx (the leading open source web servers).

Stacks and Technology – There are loads of development environments (stacks), frameworks and technologies that you can choose. Frameworks supposedly make things easier and faster but frameworks and technologies change (See 2016 frameworks to learn guide and 2017 frameworks to learn guide) frequently (and can be abandoned). Frameworks supposedly make things easier and faster but be careful most frameworks run 30% slower than raw server-side and client code. I’d recommend you learn a few technologies like NGINX, NodeJS, PHP and MySQL and move up from there.

The Mean Stack is a  popular web development platform (MEAN = MongoDB, ExpressJS, Angular and NodeJS.).

Apps can be developed for Apple platforms by signing up here (about $150 AUD a year) and using the XCode IDE. Apps can be developed for the Android Platform by using Android Studio (for about $20 (one-off fee)). Microsoft has a developer portal for the Windows Platform. Google also has an online scalable database as a service called Firebase. If you look hard enough you will find a service for everything but connecting those services can be timely, costly or make security and a scalable solution impossible so beware of using as-a-service platforms. I used the Corona SDK to develop an app but abandoned the platform due to changes in the vendor’s communication and enforced policies.

If you are not sure don’t be afraid of ask for help on Twitter.

Twitter is awesome for finding experts

Recent twitter replies to a problem I had.

Learning about new Technology and Stacks

To build the knowledge you need to learn stuff, build stuff, test (benchmark), get feedback and build more stuff. I like to learn about new technology and stacks by watching Udemy courses and they have a huge list of development courses (Web Development, Mobile Apps, Programming Languages, Game Development, Databases,  Software Testing,  Software Engineering etc).

I am currently watching a Practical iOS 11 course by Stephen DeStefano on Udemy to learn about unreleased/upcoming features on the Apple iPhone (learning about XCode 9, Swift 4, What’s new in iOS 11, Drag and drop, PDF and ARKit etc).

Udemy is awesome (Udemy often have courses for $15).

If you want to learn HTML go to https://www.w3schools.com/.

https://devslopes.com/have a number or development related courses and an active community of developers in a chat system.

You can also do formal study via an education provider (e.g. Bachelor of computer sciences at UNE or Certificate IV in programming or Diploma in Software Development at TAFE).

I would recommend you use Twitter and follow keywords (hashtags) around key topics (e.g #www, #css, #sql, #nosql, #nginx, #mongodb, #ios, #apple, #android, #swift, #objectivec, #java, #kotlin) and identify users to follow. Twitter is great for picking up new information.

I follow the following developers on YouTube (TheSwiftGuy, AppleProgrammer, AwesomeTuts, LetsBuildThatApp, CodingTech etc)

Companies like https://www.civo.com/ offer developer-friendly features with hosting, https://www.pebbled.io/ offer to develop for you and https://serverpilot.io/ help you spin up software on hosting providers.

What To Develop

First, you need to break down what you need. (e.g ” I want an app for iOS and Android in 5 months that does XYZ. The app must be secure and be fast. Users must be able to register an account and update their profile”).

Choosing how high to ensure your development project scales depends on your peak expected/active concurrent users (ratio of paying and free users). You can develop your app to scale very high but this may cost more money initially, it can be bad to pay to ensure scalability early. As long as you have a good product and robust networking/retry routines and UI you don’t need to scale high early.

Once you know what you need you can search the open-source community for code that you can use. I use Alamofire for iOS network requests, SwiftyJSON for processing JSON data and other open-source software. The only downside of using open source software is it may be abandoned by the creators and break in the future. Saving your time early may cost you time later.

Then you can break down what you don’t want. (e.g “I don’t want a web app or a windows phone or windows desktop app”). From here you will have a list of what you need and what you can avoid.

You will also need to choose a project management methodology (I have blogged about this here). Having a list of action item’s and a plan and you can work through developing your app.

While you are researching it is a good idea to develop smaller fun projects to refine your skills.  There are a number of System Development Life Cycles (SDLC’s) but don’t worry if you get stuck, seek advice or move on. It is a  good idea to get users beta testing your app early and seek feedback. Apple has the TestFlight app where you can send beta versions of apps to best testers. Here is a good guide on Android beta testing.

If you are unsure about certain user interface options or features divide your beta testers and perform A/B or split testing to determine the most popular user interfaces. Capturing user data and logs can also help with debugging and user usage actions.

Practice

Develop smaller proof of concept apps in new technologies or frameworks and you will build your knowledge and uncover limitations in certain frameworks and how to move forward with confidence. It is advisable to save your source code for later use and to share with others.

I have shared quite a bit of code at https://simon.fearby.com/blog/ that I refer to from time to time. I should have shared this on GitHub but I know Google will find this if people want it.

Get as much feedback as you can on what you do and choose (don’t trust the first blog post you read (me included)).

Most companies offer Webinars on their products. I like the NGINX webinars. Tutorialspoint have courses on development topics. Sitepoint is a  good development site that offers free books, courses, and articles. What are API’s information by Programmable web.

You may want to document your application flow to better understand how the user interface works.

Useful Tools

Balsamic Mockups and Blueprint are handy for mocking up applications.

C9.io is a great web-based IDE that can connect to a VM on AWS or Digital Ocean.  I have a guide here on connecting Cloud 9 to an AWS VM here.

I use the Sublime Text 3 text editor when editing websites locally.

(image courtesy of https://www.sublimetext.com/ )

I use the Mac Paw app to help test API’s I develop locally.

(image courtesy of https://paw.cloud )

Snippets is a great application for the Mac for storing code snippets.

I use the Cornerstone Subversion app for backing up my code on my Mac.

Webservers: https://www.iis.net/IIS Webserver, NGINX Webserver, Apache Webserver.

NodeJS programming manual and tutorials.

I use Little Snitch (guide here) for simulating network down in app development.

I use the Forklift file manager on OSX.

Databases: SQL tutorials, NoSQL Tutorials, MySQL documentation.

Siege is a command-line HTTP load testing tool.

CPU Busy

http://loader.io/ is a nice web-based benchmarking tool.

Bootstrap is an essential mobile responsive framework.

Atlassian Jira is an essential project tracking tool. More on Agile Epics v Stories v Tasks on the Atlassian community website here. I have a post on developing software and staying on track here using Jira.

Jsfiddle is a good site that allows you to share code you are working on or having trouble with.

Dribbble is a “show and tell” site for designers and creatives.

Stackoverflow is the go-to place to ask for help.

Things I care about during development phases.

  • Scalability
  • Flexibility
  • Risk
  • Cost
  • Speed

Concentrating too much on one facet can risk exposing other facets. Good programmers can recommend a deliver a solution that can be strong in all areas ( I hate developing apps that are slow but secure or scalable and complex).

Platforms

You can signup for online servers like Azure, AWS (my guide here) or you can use a cheaper CPanel based hosting. Read my guide on the costs of running a cloud-based service.

Use my link to get a free Digital Ocean server for two months by using this link. Read my blog post here to help setup you VM. You can always use Ubuntu on your local machine to use Ubuntu (read my guide here). Don’t forget to use a GIT code repository like GitHub or Bitbucket.

Locally you can install Ubuntu (developers edition) and have a similar environment as cloud platforms.

Lessons Learned

  • Deploy servers close to the customers (Digital Ocean is too far away to scale in Australia).
  • Accessibility and testing (make things accessible from the start).
  • Backup regularly (Use GIT, backup your server and use Rsync to copy files to remote servers and use services like backblaze.com to backup your machine).
  • Transportability of technology (Use open technology and don’t lock yours into one platform or service).
  • Cost (expensive and convenient solutions may be costly).
  • Buy in themes and solutions (wrapbootstrap.com).
  • Do improve what you have done (make things better over time). Thing progress and not perfection.

There is no shortage of online comments bagging certain frameworks or platforms so look for trends and success stories and don’t go with the first framework you find. Try candidate frameworks and services and make up your own mind.

A good plan, violently executed now, is better than a perfect plan next week. – General George S. Patton

Costs

Sometimes cost is not the deciding factor (read my blog post on Alibaba cloud). You should estimate your apps costs per 1000 users. What do light v heavy users cost you? I have a blog post on the approx cost of cloud services.  I started researching a scalable NoSQL platform on IBM Cloudant and it was going to cost $4,000 USD a month and integrating my own App logic and security was hard. I ended up testing MongoDB Cloud where I can scale to three servers for $80 a month but for now, I am developing my current project on my own AWS server with MongoDB instance. Read my blog post here on setting up MongoDB and read my blog post on the best MongoDB GUI.

Here is a great infographic for viewing what’s involved in mobile app development.

You can choose a number of tools or technologies to achieve your goals, for me it is doing it economically, securely and in a scalable way that has predictable costs. It is quite easy to develop something that is costly, won’t scale or not secure or flexible. Don’t get locked into expensive technologies. For example, AWS has a user pays Node JS service called Lambada where you get Million of free hits a month and then you get charged $0.0000002 per request thereafter. This sounds good but I prefer fixed pricing/DIY servers better as it allows me to build my own logic into apps (this is more important than scalability).

Using open-source software of off the shelf solutions may speed things up initially? Will It slow you down later though? Ensure free solutions are complete and supported and Ensure frameworks are helping. Do you need one server or multiple servers (guide on setting up a distributed MySQL environment )? You can read about my scalability on a budget journey here. You can speed up a server in two ways Scale Up (Add more Mhz or CPU cores) or scale-out (add more servers).

Start small and use free frameworks and platforms but have a tested scale-up plan, I researched cheap Digital Ocean servers and moved to AWS to improve latency and tested MongoDB on Digital Ocean and AWS but have a plan to scale up to cloud.mongodb.com if need be.

Outsource (contractors) 

Remember outsourcing work tasks (or complete outsourcing of development) can buy you time and or deliver software faster. Outsourcing can also introduce risks and be expensive. Ask for examples of previous work and get raw numbers on costs (now and in the future) and concurrent users that a particular bit of outsourcing work will achieve.

If you are looking to outsource work do look at work that the person or company has done before (if is fast, compliant, mobile scalable, secure, robust, backup up, do you have rights to edit/own and own the IP etc). I’d be cautious of companies who say they can do everything and don’t show live demos.

Also, beware of restrictions on your code set by the contractors. Can they do everything you need (compare with your list of Moscow must haves)? Sometimes contractors only code or do what they are comfortable with that can impact your deliverables.

Do use a private Git repository (that you own) like GitHub or BitBucket to secure your code and use software like Trello or Atlassian JIRA to track your project. Insist the contractors use your repository to retain control.

You can always sell equity in your idea to an investor and get feedback/development from companies like Bluechilli.

Monetization and data

Do have multiple monetization streams (initial app purchase cost, in-app purchase, subscriptions, in-app credit, advertising, selling code/components etc). Monthly revenue over yearly subscription works best to ensure cash flow.

Capture usage data and determine trends around successful engagement, Improve what works. Use A/B testing to roll out new features.

I like Backblaze post on getting your first 1,000 customers.

Maintenance, support risk and benefits

Building your own service can be cheaper but also riskier if you fail to secure an app you are in trouble if you cannot scale you are in trouble. If you don’t update your server when vulnerabilities come out you are in trouble. Also, Google on monetization strategies. Apple apps do appear to deliver more profits over Android. Developers often joke “Apple devices offer 90% of the profits and 10% of the problems and Android apps offer 90% of the problems and 10% of the profits”.

Also, Apple users tend to update to the latest operating system sooner where Android devices are rather fragmented.

Do inform you users with self-service status pages and informative error messages and don’t annoy users.

Use Free Trials and Credit

Most vendors have free trials so use them

https://aws.amazon.com/free/AWS have 12 month free tiers.

Use this link to get two months free with Digital Ocean.

Microsoft Azure also give away free credit.

Google cloud also have free credit.

Don’t be afraid to ask.

MongoDB Cloud also gives away free credit if you ask.

Security

Sites like Shodan.io will quickly reveal weaknesses in your server (and services), this will help you build robust solutions from the start before hackers find them. Read https://www.owasp.org/index.php/Main_Page to know h0w to develop secure websites. Listen to the SecurityNow podcast to learn how the technology works and is broken. Following TroyHunt is recommended to keep up to date with security in general. @0xDUDE is a good ethical hacker to follow to stay up-to date on security exploits also @GDI_FDN is a good non-profit organization that helps defend sites that use open source software.

White hack hackers exist but so do black hat ones.

Read the Open Web Application Security site here. Read my guide on setting up public key pinning in security certificates here.

I use the ASafaWeb site to test your sites from common ASP security flaws. If you have a secure certificate on your site you will need to ensure the certificate is secure and up to date with the SSL Labs SSL Test site.

SSL Cert

Once your websites IP address is known (get it from SSL Labs) run a scan over your site with https://www.shodan.io/ to find open ports or security weaknesses.

Shodan.io allows you and others to see public information about your server and services. You can read about well-known internet ports here.

Anyone can find your server if you are running older (or current) web servers and or services.

It is a  good idea to follow security researchers like Steve Gibson and Troy Hunt and stay up to date with live exploits. http://blog.talosintelligence.com is also a good site for reading technical breakdowns of exploits.

Networking

Do share and talk about what you do with other developers. You can learn a lot from other developers and this can save you loads of time and mistakes. True developers love talking about their code and solutions.

Decision Making

Quite a lot of time can be spent on deciding on what technology or platform to use, I decide by factoring in cost, risk and security over flexibility, support and scalability. If I need flexibility, lower support or scalability then I’ll choose a different technology/platform. Generally, technology can help with support. Scalable solutions need effort from start to finish (it is quite easy to slow down any technology or service).

Don’t be afraid to admit you have chosen the wrong technology or platform. It is far easier to research and move on than live with poor technology.

If you have chosen the wrong technology and stick with it, you (and others) will loath working with it (impacting productivity/velocity).  Do you spend time swapping technology or platforms now or be less productive later?

Intellectual property and Trademarks

Ensure you search international trademarks for your app terms before you start using them. The Australian ATO has a good Australian business name checker here.

https://namechk.com/ is also a good place to search for your app ideas name before you buy or register any social media accounts.

Using https://namechk.com/ you can see “mystartupidea” name is mostly free.

And the name “microsoft’ is mostly taken.

Seek advice from a start-up experts from https://www.bluechilli.com/ like Alan Jones.

See my guide on how to get useful feedback for your ideas here.

Tips

  1. Use Git Source Control systems like GitHub or Bitbucket from the start and offsite backup your server and environments frequently. Digital Ocean charges 20% of your servers costs to back it up. AWS has multiple backup offerings.
  2. Start small and scale up when needed.
  3. Do lots of research and test different platforms, frameworks, and technologies and you will know what you should choose to develop with.

(Image above found at http://startupquotes.startupvitamins.com/ Follow Startup Vitamins on Twitter here.).

You will know when you are a developer when you have gained knowledge and experience and can automatically avoid technologies that will not fit a  solution.

Share

Don’t be afraid to share what you know (read my blog post on this here). Sharing allows you to solidify your knowledge and get new information. Shane Bishop from EWWW Image Optimizer  WordPress plugin wrote Setting up a fast distributed MySQL environment with SSL for us. If you have something to share on here please let me know here on twitter.

It’s never too late to do

One final tip is knowledge is not everything, planning and research is key, a mind that can’t develop may be better than a mind that can because they have no experience (or baggage) and may find faster ways to do things. Thanks to http://zachvo.com/ for teaching me this during a recent WordPress re-deployment. Sometimes the simplest solution is.

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Filed Under: Advice, Android, Apple, Atlassian, Backup, BitBucket, Blog, Business, Cloud, CoronaLabs, Cost, Development, Domain, Firewall, Free, Git, GitHub, Hosting, JIRA, mobile app, MySQL, Networking, NodeJS, OS, Project Management, Scalability, Scalable, Security, Server, Software, Status, Trello, VM Tagged With: ideas

Share what you know and do

June 15, 2017 by Simon

I have seen some seriously talented people lately who have obtained knowledge or skills that I find awesome.  These skills may have been obtained via education/qualifications, hobbies, experience or simply learned via the Internet. I think they should share this awesomeness via BLOGS or VLOGS (Video logs).

I am generalising a bit but if you ask any young person what they want to be when they grow up it is a “Famous YouTube Star” (YouTube is watched more that TV was when I was young) . The digital native generation did not grow up around the TV and aspire to be on young talent time. The younger digital natives have grown up watching every day people on YouTube doing normal or not so normal things.

The quickest way to get a following on YouTube is to be yourself and share what you do. If you don’t like being in front of a video camera then start a blog.

I know my kids like watching Casey Neistat, Cody’s Lab, The Slow Mo Guys, the hydraulic press channel and aquachigger all of these people just started out sharing their hobbies. The YouTube guy AvE simply tears stuff apart in a shed to learn how stuff is made. YouTube Colin Furze makes stuff.

Who Shares

Check out this list of popular YouTube channels. Other professional YouTube channels I watch are Linus Tech Tips, In a Nutshell, Cody’s Lab or Smarter Every Day.

You don’t need to be perfect to start blogging or vlogging you just need to start, be consistent and be yourself.

People can quite easily make a living making good YouTube videos. Lamborghini anyone? Here is an honest breakdown of a YouTube stars revenue and strategy on with the 10 richest YouTubers of 2016. 

Why share

Become an expert. Who else do you know that knows what you know. What do you want to be remembered for doing? Skills and passion are only gained through practice and commitment.

Blogging or vlogging may lead to future things. Think of blogging as networking,  Sharing allows you to network with like-minded people.

Most people are experts at something and what you do is interesting (do you like making soap, bee keeping,  gardening, keeping ant farms, fishing, belly dancing, electronics, etc).

Watching YouTube videos allows you to learn about the immune system, elements, physics, density and crushing stuff, applying makeup, hairstyles or even cooking Indian food.

My very digital mother often jokes she learnt how to build a house on YouTube. Sharing content allows others to learn what you know and you will find new stuff to learn. AstroPhysics anyone?

You can also use blogging or vlogging as a form of marketing by sharing news about your product or service to increase sales. I love this guy who shares the knowledge of how he makes nixie tubes. Sharing had increased his sales big time.

Purpose

Maintaining a blog or vlog allows you to practice your passion whatever it is. I know a person who ran a fiction blog and built a nice community across the globe. They gained life long friends, shared their passion and have had the privilege of reading and giving early feedback on a small fiction book called Fifty Shades of Grey.

You might think what you do is boring but for others it may be fascinating. Repurpose your knowledge.

When you create a new blog post or record a VLOG video you will cement what you know and put into practice what you think you know. When you have a blog or VLOG you can easily obtain feedback from comments you may receive.

You can share information about software development, soap making, hairdressing, cooking, electronics or metal detecting etc.

I have a few videos online and even filmed myself making a cappuccino and repairing a computer hard drive with a soldering iron. Half the reason I blog is to share what I have learned.

Tools for Blogging.

You can use a Web based blogging engine like WordPress, WordPress is free if you host it yourself (you can use a free theme) or you can pay WordPress to host your blog for as low as $4 a site per month.  You can edit WordPress blog posts with a desktop or mobile interface. Blogging is the easiest way to share (you are reading a blog now).  My brother has been blogging for a while and my friend has a regular blog that is funny.

Tools for Vlogging

You will need (video)

  • An inexpensive camera (Webcam, GoPro, camcorder or smartphone (with a camera) ).
  • Video editing software like Adobe Premiere Pro or free software. Read my quick guide on using Adobe Premiere Pro or learn to make videos here.
  • A smartphone holder clamp from eBay and a tripod.
  • Some sort of computer to edit the video (maybe the device you are using)?
  • An internet connection to upload your videos.
  • Caffeine while making the video or blog post

You will need to decide on the style of video (the best way is to watch other videos and imitate), there are loads of YouTube videos on making videos.

If you don’t want to learn video editing software you can live stream videos to Facebook or Periscope from a smartphone (record and share in one step) . Free background music can be found here to help lift your video.

Don’t be afraid of sounding boring. You don’t have to speak if you don’t want too. This man shared how to make cat food videos.

IMHO: Once your channel becomes popular you will need a video intro.

How Often

To gain more viewers you will need to post new content every few days. This can be a challenge but when you start the ideas come thick and fast. Record often and have footage and b roll footage ready.

What to Share

  • Whatever you do/know or want to share.
  • Answer questions people ask. This video has 10 million views and the video was created from a comment to a pre opus video.
  • Look for others for inspiration.
  • Share a part of your day (or products or services)
  • How to make cat food (already done).

Where to Share.

Share on Youtube or on a Blog (on your website or wordpress.com),  live streaming from Facebook or Periscope.

Shameless Plug

Here are my blogs and infrequent Vlogs. Here is my main blog and side blog, Here is my first video that included my son who won me a computer motherboard in the process.

Fun

A friend in the United States sent me this video about “the fun of doing” and “you won’t do until you start”.

Efficiently 

It is s good idea to capture your content as you do it or think of it, don’t make it a chore. Use tools at hand (mobile apps or smartphones). Don’t make it harder than it has to be.

Iterate in public

Don’t aim to release a perfect piece of content, release content early,  revise or add to it as you think of new things.

Monetization

You can enable monetization on youtube or insert ads on your WordPress website to warn a bit of cash.

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  • Backing up your computer automatically with BackBlaze software (no data limit)
  • How to back up an iPhone (including photos and videos) multiple ways
  • Add two factor auth login protection to WordPress with YubiCo hardware YubiKeys and or 2FA Authenticator App
  • Setup two factor authenticator protection at login on Ubuntu or Debian
  • Using the Yubico YubiKey NEO hardware-based two-factor authentication device to improve authentication and logins to OSX and software
  • I moved my domain to UpCloud (on the other side of the world) from Vultr (Sydney) and could not be happier with the performance.
  • Monitor server performance with NixStats and receive alerts by SMS, Push, Email, Telegram etc
  • Speeding up WordPress with the ewww.io ExactDN CDN and Image Compression Plugin
  • Add Google AdWords to your WordPress blog

Security

  • Check the compatibility of your WordPress theme and plugin code with PHP Compatibility Checker
  • Add two factor auth login protection to WordPress with YubiCo hardware YubiKeys and or 2FA Authenticator App
  • Setup two factor authenticator protection at login on Ubuntu or Debian
  • Using the Yubico YubiKey NEO hardware-based two-factor authentication device to improve authentication and logins to OSX and software
  • Setting up DNSSEC on a Namecheap domain hosted on UpCloud using CloudFlare
  • Set up Feature-Policy, Referrer-Policy and Content Security Policy headers in Nginx
  • Securing Google G Suite email by setting up SPF, DKIM and DMARC with Cloudflare
  • Enabling TLS 1.3 SSL on a NGINX Website (Ubuntu 16.04 server) that is using Cloudflare
  • Using the Qualys FreeScan Scanner to test your website for online vulnerabilities
  • Beyond SSL with Content Security Policy, Public Key Pinning etc
  • Upgraded to Wordfence Premium to get real-time login defence, malware scanner and two-factor authentication for WordPress logins
  • Run an Ubuntu VM system audit with Lynis
  • Securing Ubuntu in the cloud
  • No matter what server-provider you are using I strongly recommend you have a hot spare ready on a different provider

Code

  • How to code PHP on your localhost and deploy to the cloud via SFTP with PHPStorm by Jet Brains
  • Useful Java FX Code I use in a project using IntelliJ IDEA and jdk1.8.0_161.jdk
  • No matter what server-provider you are using I strongly recommend you have a hot spare ready on a different provider
  • How to setup PHP FPM on demand child workers in PHP 7.x to increase website traffic
  • Installing Android Studio 3 and creating your first Kotlin Android App
  • PHP 7 code to send object oriented sanitised input data via bound parameters to a MYSQL database
  • How to use Sublime Text editor locally to edit code files on a remote server via SSH
  • Creating your first Java FX app and using the Gluon Scene Builder in the IntelliJ IDEA IDE
  • Deploying nodejs apps in the background and monitoring them with PM2 from keymetrics.io

Tech

  • Backing up your computer automatically with BackBlaze software (no data limit)
  • How to back up an iPhone (including photos and videos) multiple ways
  • US v Huawei: The battle for 5G
  • Check the compatibility of your WordPress theme and plugin code with PHP Compatibility Checker
  • Is OSX Mojave on a 2014 MacBook Pro slower or faster than High Sierra
  • Telstra promised Fibre to the house (FTTP) when I had FTTN and this is what happened..
  • The case of the overheating Mac Book Pro and Occam’s Razor
  • Useful Linux Terminal Commands
  • Useful OSX Terminal Commands
  • Useful Linux Terminal Commands
  • What is the difference between 2D, 3D, 360 Video, AR, AR2D, AR3D, MR, VR and HR?
  • Application scalability on a budget (my journey)
  • Monitor server performance with NixStats and receive alerts by SMS, Push, Email, Telegram etc
  • Why I will never buy a new Apple Laptop until they fix the hardware cooling issues.

Wordpress

  • Replacing Google Analytics with Piwik/Matomo for a locally hosted privacy focused open source analytics solution
  • Setting web push notifications in WordPress with OneSignal
  • Telstra promised Fibre to the house (FTTP) when I had FTTN and this is what happened..
  • Check the compatibility of your WordPress theme and plugin code with PHP Compatibility Checker
  • Add two factor auth login protection to WordPress with YubiCo hardware YubiKeys and or 2FA Authenticator App
  • Monitor server performance with NixStats and receive alerts by SMS, Push, Email, Telegram etc
  • Upgraded to Wordfence Premium to get real-time login defence, malware scanner and two-factor authentication for WordPress logins
  • Wordfence Security Plugin for WordPress
  • Speeding up WordPress with the ewww.io ExactDN CDN and Image Compression Plugin
  • Installing and managing WordPress with WP-CLI from the command line on Ubuntu
  • Moving WordPress to a new self managed server away from CPanel
  • Moving WordPress to a new self managed server away from CPanel

General

  • Backing up your computer automatically with BackBlaze software (no data limit)
  • How to back up an iPhone (including photos and videos) multiple ways
  • US v Huawei: The battle for 5G
  • Using the WinSCP Client on Windows to transfer files to and from a Linux server over SFTP
  • Connecting to a server via SSH with Putty
  • Setting web push notifications in WordPress with OneSignal
  • Infographic: So you have an idea for an app
  • Restoring lost files on a Windows FAT, FAT32, NTFS or Linux EXT, Linux XFS volume with iRecover from diydatarecovery.nl
  • Building faster web apps with google tools and exceed user expectations
  • Why I will never buy a new Apple Laptop until they fix the hardware cooling issues.
  • Telstra promised Fibre to the house (FTTP) when I had FTTN and this is what happened..

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