1st Commandment: Always comment your iptables rules

1st Commandment: You shall always comment your iptables rules. If you are writing an iptables rule, you need to comment it. Period. Whenever someone is trying to understand what is going on with your system and they run iptables -nvL and they see something like this (from our previous post on blocking custom domains via…

Linux Security Checklist

Before you deploy any Linux server online, we recommend that you go through this checklist to prevent a breach and/or a compromise.   Organizational Single purpose server. Is this server single purpose? Do not run a mail server with a web server (different purposes), for example. Or a web server with a DNS server. Do…