Scot L. Harris wrote:
<>Finally upgraded my main system to FC4. This was a clean install from
CD. yum update completed over night. I noticed the following entries
in the iptables rules:
[...clip...]
<>-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
[...clip...]
<>Looked through the release notes and did not see anything related to
ports 5353, 50, 51, or 631.
For the 50 and 51, that's not port 50 and 51 but protocol 50 and 51.
From
http://www.iana.org/assignments/protocol-numbers
50 is encapsulating security payload
51 is authentication header
As mentioned previously, this is for "IPSec", i.e. IP Security,
typically used
for Virtual Private Networks.
