IPFW blocked my IPv6 NTP traffic

Matthew Seaman matthew at FreeBSD.org
Tue Dec 1 15:19:10 UTC 2015


On 2015/12/01 15:05, Mark Felder wrote:
> Notice how almost all of them are port 123 on both sides, but a few of
> them are not. Why? The RFC says that NTP is supposed to be using port
> 123 as both the source and destination port, but I clearly have
> something happening on port 16205. Is something screwy with ntpd in
> CURRENT?

NTP not using port 123 as the source port usually indicates that it is
behind a NAT gateway at the other end.  It's harmless and fairly common.

	Cheers,

	Matthew

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