What are some good antivirus and firewalls for Red Hat 7.0 Linux (Prefferably free or open source)? Does It come with any? Are there any *major* exploits on Red Hat 7.0? ThanX!

There are many. Presumably you are not going to exploit them. I believe that there is something like OpenAntivirus or something... Google is your friend.

The linux kernel has a firewall built in, you just have to enable iptables and set up rules (there are many pre-made rulesets available, see freshmeat.net to search for them; you can also install a debian package that has some good default rules). There is a HOWTO for firewalling even: http://www.tldp.org/HOWTO/Firewall-HOWTO.html .

As for antivirus--there is no need. There are none (well, sort of. IIRC there are 2 or 3 but you have to be (1) root and (2) a complete idiot for them to do anything and they are all very easily removed and not seen anywhere really in the wild). Viruses aren't really a problem for POSIX operating systems because they implement a little thing called security (permissions, separation of the super-user and normal user accounts)...POSIX has Access Control Lists that provide finer grained security, but almost no systems implement them yet (IIRC NSA Secure GNU/Linux does, and the Hurd should be able to do it very easily). I think Linux 2.6 will have support for ACL in the kernel.