I'm running redhat 5.2 (2.0.36) as my firewall through dsl to our isp.
I've disabled much (telnet, finger, etc). However, there are several
processes/modules that I don't know what they do so I'm hesitant to
disable them.
I'm currently using ipfwadm with the linux-howto suggested strong rule
set. All I want is to allow my internal network access to the internet
(web,ftp, telnet and mail). So I'm guessing that all I need the
firewall to do is packet filtering, although I want it to log anything
anomolous (star trek taugh me something).
Can anyone tell me what is the minimum setup I need to run this? I want
this to be secure but also compact and efficient.
Thanks much. Phil