How To List and Delete Iptables Firewall Rules | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules
Minimal Iptables Configuration – Developer Should Know http://developer-should-know.tumblr.com/post/128018906292/minimal-iptables-configuration
How To Use RKHunter to Guard Against Rootkits on an Ubuntu VPS https://www.digitalocean.com/community/tutorials/how-to-use-rkhunter-to-guard-against-rootkits-on-an-ubuntu-vps
Setup mail server on ubuntu 14.04 ( Postfix – dovecot ) http://www.krizna.com/ubuntu/setup-mail-server-ubuntu-14-04/
An In-Depth Guide to mod_rewrite for Apache – Envato Tuts+ Code Tutorial http://code.tutsplus.com/tutorials/an-in-depth-guide-to-mod_rewrite-for-apache–net-6708
How To Set Up Apache Virtual Hosts on CentOS 7 | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-centos-7
How to troubleshoot DNS with dig and nslookup https://www.a2hosting.com/kb/getting-started-guide/internet-and-networking/troubleshooting-dns-with-dig-and-nslookup
Compare text files with TextWrangler – Uros Baric http://urosbaric.com/compare-files-with-textwrangler
How To Set Up Apache Virtual Hosts on Ubuntu 14.04 LTS | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-ubuntu-14-04-lts
openssh – Does ssh key need to be named id_rsa? – Ask Ubuntu http://askubuntu.com/questions/30788/does-ssh-key-need-to-be-named-id-rsa
How to access your account using SSH keys https://www.a2hosting.com/kb/getting-started-guide/accessing-your-account/using-ssh-keys#Mac-OS-X-and-Linux-operating-systems
How To Configure SSH Key-Based Authentication on a Linux Server | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-configure-ssh-key-based-authentication-on-a-linux-server
How To List and Delete Iptables Firewall Rules | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules
Iptables Essentials: Common Firewall Rules and Commands | DigitalOcean https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands
How To Set Up a Firewall Using Iptables on Ubuntu 14.04 | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-using-iptables-on-ubuntu-14-04
How To Choose an Effective Firewall Policy to Secure your Servers | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-choose-an-effective-firewall-policy-to-secure-your-servers
The Beginner’s Guide to iptables, the Linux Firewall http://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
25 Most Frequently Used Linux IPTables Rules Examples http://www.thegeekstuff.com/2011/06/iptables-rules-examples/
server – How can I host a domain/website on my new VPS? – Ask Ubuntu http://askubuntu.com/questions/124261/how-can-i-host-a-domain-website-on-my-new-vps
web hosting – Add domain to VPS – Webmasters Stack Exchange http://webmasters.stackexchange.com/questions/17911/add-domain-to-vps
How-to Setup a VPS to host websites. – VPSTutorial.com http://vpstutorial.com/setup-a-vps-to-host-website/
Problem connecting to Webmin – Ask Ubuntu http://askubuntu.com/questions/78627/problem-connecting-to-webmin
Reboot a Server from Command Line? – Ask Ubuntu http://askubuntu.com/questions/397502/reboot-a-server-from-command-line
How to Uninstall Software Using the Command Line in Linux http://www.howtogeek.com/229699/how-to-uninstall-software-using-the-command-line-in-linux/
package management – How can I install just security updates from the command line? – Ask Ubuntu http://askubuntu.com/questions/194/how-can-i-install-just-security-updates-from-the-command-line
apt – How to list all installed packages? – Ask Ubuntu http://askubuntu.com/questions/17823/how-to-list-all-installed-packages
AutomaticSecurityUpdates – Community Help Wiki https://help.ubuntu.com/community/AutomaticSecurityUpdates
Some basic Git instructions for Github for Mac and the command line https://gist.github.com/albatrocity/1201187