Thank you for existing and making my life easier :). I need your help, please.
I need to create a putty function to work like this.
A command in putty:
ipfw addip [IP]
This will add in /etc/rules.ipfw the following line:
$IPF 460 allow all from [IP] to any 22 in
A command in putty:
ipfw removeip [IP]
This will search in /etc/rules.ipfw for the line with specific [IP] and it will remove it. Example line to be removed
$IPF 460 allow all from [IP] to any 22 in
Thank you.
It sounds like what you want is a shell script for the user to run after connecting to the server with PuTTY. ipfw_addip to do this:
#! /bin/sh
echo "\$IPF 460 allow all from $1 to any 22 in" >> /etc/ipfw.rules
and ipfw_removeip:
#! /bin/sh
grep -v "allow all from $1" /etc/ipfw.rules > /tmp/ipfw.$$
mv /tmp/ipfw.$$ /etc/ipfw.rules
Those are very simplistic examples, and in a production environment should make more sanity checks, but they may help you get started.