Tag: iptables

Allow NFS through iptables This is one way to determine the ports needed to open in your iptables rules to get NFS to work properly. First we need to determine the ports NFS uses rpcinfo -p | awk -F...
Port Knocking

What is Port Knocking?

Port knocking is a method by which you can dynamically open ports on your server to a single IP address. Port knocking allows you to transparently run a...
SSH Dictionary Attack Prevention with iptables It is ideal to slow down the SSH dictionary attack when the infested host started to brute force the SSH authentication. There are many scripts/user-land daemons that perform...
Rule-based DoS attacks prevention shell script

Dette scriptet er ikke testet samt DoS bør hindres på kernel nivå!

A simple rule-based DoS attack-prevention shell script. However, the proposed shell script is not a perfect...