Common iptables command, cheatsheet

#!/bin/sh #File: /etc/rc.d/rc.firewall # Immediately log and drop any known abusive IPs iptables -A INPUT -p tcp -s 87.118.104.44 -m limit –limit 1/minute  –limit-burst 10  -j LOG –log-prefix “[DROPPED_NODE]“   –log-level 4 iptables -A INPUT -p tcp -s 87.118.104.44 -j DROP # Allow from any to any on 127.0.0.1/32 iptables -A INPUT -s 127.0.0.1/32 -j ACCEPT [...]

How to change your hostname in Ensim?

There are many discussions about changing your hostname in Ensim. Many are overly complicated or detailed, miss critical steps, or add steps that are unnecessary. Changing your hostname requires editing two files and restarting your server — thats it! Of course, you will need to know how to use telnet or SSH and a text [...]