IPTables, IRC, and SSH
I have every ruleset for my firewall set how I want it... except for
IRC and ssh...
I would like to use the state-tracking for IRC, but simply having the
--state established,related (and new... but I don't think that's
necessary) --sport irc(d) options doesn't seem to do anything...
I can connect TO the IRC server, but it won't allow a login. I've read
that it has something to do with ICMP, but I don't know exactly what,
nor how to fix it.
Second - SSH - I would like iptables to accept incoming connections to
OpenSSH, but from a specific domain (myschool.edu). However, I don't
know the IP range for the domain, nor do I know how to set IPtables to
allow connections from only that domain. For that matter, I have only
been able to have incoming SSH connections when iptables allows ALL
incoming connections. So what commands do I need to use for SSH?
(Again, with state tracking would be preferred).