ports/protocol through firewall

Russ Allbery rra at stanford.edu
Mon Apr 25 17:48:43 UTC 2005

Bill Tangren <bjt at aa.usno.navy.mil> writes:

> I have a local firewall, called firestarter on another machine. I notice 
> that when I tell it to open a port for nntps, this is what shows up in 
> iptables:
> ACCEPT     tcp  --             tcp dpt:563
> ACCEPT     udp  --             udp dpt:563

> Firestarter opens port 563 for tcp and udp. That doesn't mean that inn 
> uses udp, only that there must be some newsgroup servers that do (or 
> firestarter is configured badly).

It means that firestarter is configured badly.  NNTP and NNTPS have never
used UDP.

Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>

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