I'm trying to set up a server (that will share the Internet connection, provide some network storage space, run a www server, etc). I installed Red Hat 7.3 with the RPMs I wanted, but didn't install KDE or GNOME. I installed Classic X window system. I don't (right now) have enough hard drive space to install either of those, and I figured it's a server, so it doesn't really need a nice GUI.
So far, I was able to turn on the telnet server, which was off by default, and get basic NAT to work (using it now, in fact). But I couldn't figure out how to alter config files from the command line (does it have something do do with "ed" or "red"?), and for most of the things I've tried to set up, I can't find help, or at least help that I can understand. The man pages can help sometimes, but sometimes I don't even know what man to look up.
how do I block ports, and how do I forward specific ports to specific private addresses? I read that you either use ipchains or iptables, and I'm using iptables...