[ntp:questions] Interface restrictions confusing me

David Woolley david at ex.djwhome.demon.invalid
Sat Oct 10 12:48:47 UTC 2009


Juergen Beisert wrote:

> Why is port 123 open on eth0?

To allow the replies to come back in from the time servers.  ntpd sends 
UDP packets with both source and destination set to 123, not just when 
talking to peers.




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