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Virtualmin Suexec Error /var/www/vhosts – The Portland Company https://www.theportlandcompany.com/2014/01/virtualmin-suexec-error-varwwwvhosts/
How can I make ssh ignore .ssh/config? – Unix & Linux Stack Exchange http://unix.stackexchange.com/questions/110283/how-can-i-make-ssh-ignore-ssh-config
Manage multiple SSH private keys with IdentityFile « Bongo’s Codeways http://www.kelvinwong.ca/2011/03/30/multiple-ssh-private-keys-identityfile/
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git – Best way to use multiple ssh private keys on one client – Stack Overflow http://stackoverflow.com/questions/2419566/best-way-to-use-multiple-ssh-private-keys-on-one-client
rebuild vs restore | DigitalOcean https://www.digitalocean.com/community/questions/rebuild-vs-restore
Frequently Asked Questions – Technical | DigitalOcean https://www.digitalocean.com/help/technical/setup/
Options Used within iptables Commands https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/3/html/Reference_Guide/s1-iptables-options.html
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
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