I am a bit of a newbie to Linux security.
I want to configure my Ubtunu 12.04LTS with IPTABLES so that the only access to the server is on port 80 (http) from anywhere and then allow access on port 22 (SSH) from 192.168.1.0/24. Everything else should be denied.
How do I do this? I am sure it is simple, however I am new to it so please be patient :)