Tuts4Tech

We all know IPTables can be difficult. By adding the following lines to your ~/.bashrc you can simplify the tasks of blocking packets from a certian ip.

First your going to need to install IPTables:
Gentoo: emerge iptables   (Must be  Root to use/install iptables)
Ubuntu/Debian: sudo apt-get install iptables

Then edit your .bashrc file and add the following

alias blockedips="iptables -L"
alias blockip="iptables -I INPUT -j DROP -s "
alias unblockip="iptables -D INPUT -j DROP -s "

Reload your .bashrc by running source .bashrc and you should then be able to run the commands below

blockedips - Will Show all Blocked hosts
blockip IP-HERE - Will Block that ip
unblockip IP-HERE - Unblocks that ip