iptables, close/open ports... tutorial for newbie

[CrustyDOD]

Is there any tutorial/explanation page for newbie about iptables? I would really want to block all connections from outside/internet to my server except for ports 80 and 21/20... My server is behind router (router forwards only 80 and 21 ports)... and allow ssh, webmin access from lan connection..

Anyone knows for really good site about iptables?

[matej]

Is there any tutorial/explanation page for newbie about iptables?
google - howto iptables: http://www.linuxguruz.com/iptables/howto/ :) (http://www.linuxguruz.com/iptables/howto/)

I would really want to block all connections from outside/internet to my server except for ports 80 and 21/20... My server is behind router (router forwards only 80 and 21 ports)... and allow ssh, webmin access from lan connection..
You can use also Firestarter - gui firewall configurator and tool for observing firewall.
apt-get install firestarter

[CrustyDOD]

erm using FireStarter on server without GUI? Hardly :)

Thx for the link, did a search on these forums but forgot about uncle Google ](*,)