[TriLUG] ports 179 and 1720

[Ryan Wheaton]

hey all,

I've got a firewall built with RH9 (running the LVS kernel), and nmap 
is showing the following ports to be open:


179/tcp filtered bgp
1720/tcp filtered H.323/Q.931


I can't find much about either of these protocols, except that BGP is a 
gateway routing protocol, and that the H.323 is some kind of 
video/voice/data thing.  I was wondering if these ports should be open, 
and what might have them open.  netstat -an doesn't show any programs 
holding that port open...  i'm not too worried because the ports are 
filtered, but it makes me a bit uneasy just because i don't really know 
what they are, and was just wondering if anyone had any ideas why these 
should be showing up in a nmap scan before i shut them off with 
iptables.

thanks,

-rtw