Hi All, I'm a brand new user, and I'm charged with setting up 2 servers both running RH7.2 on a very small private network (a development environment). I've installed an email service on each, but I'm having trouble getting as much as a ping between the two boxes. I've modified /etc/hosts, /etc/host.conf, and /etc/sysconfig/network. I'm using a generic, supported NIC, everything was working fine before I took it off the University's network, eth0 seems ok, and I've checked the cables and hub. I'm looking for 1) Am I missing something obvious or did I modify a conf file I wasn't supposed to? and/or 2) some simple troubleshooting ideas? I've scoured the internet and several books (my manual is RH7.2 Unleashed, which I don't recommend to anyone FWIW), and I seem to be getting caught between either a HOWTO that's more complicated than I'm looking for (I don't need DNS, for example), or a dumbed down version that has me edit conf files that I don't need from a different distribution (RH7.2 does not require /etc/HOSTNAME, for example). Thanks in advance for any help you can offer, Jeff