I'm new here.
that said, I just installed zimbra on a server hosted with serverpronto.com. I had spent 3 days trying to get ISPconfig working and just gave up. Zimbra works great and I'm actually a little uneasy about how easy it was.
Anyway, so this is sitting on the internet. two IP's, both public facing. (one is the ns1 for dns, and the other is the ns2. not ideal, but it's a start.)
I'd like to put a firewall up (currently running without one, eek!) but not sure what ports to worry about, or what some might recommend for a firewall, and so forth. Want to lock it down, but not sure how to go about it.
Aside from zimbra, I've got webmin and use this server to also handle DNS.
I've done some searches but nothing turned up that was helpful.
sysinfo: FC5, 512MB ram, 40GB HD, 2 WAN IP's, new mint flavor.