On Thursday 22 September 2005 09:49, Joel Reicher wrote:

> I think average and minimum are the stats reported by the ntpdc monlist
> command for avging and lstint.

That'd make sense.  Thanks.

> Your configuration file looks fine to me. You've probably hit the issue
> that has been spoken about many times on this list: ntpd can't do
> anything about a client that won't obey KOD packets.

I understand that part.  There's not much to do with broken clients but
ignore them somehow.  What irked me was seeing my server continually
replying to those clients:

$ sudo tcpdump -n port 123 and host 71.10.124.9
  tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
  listening on fxp0, link-type EN10MB (Ethernet), capture size 96 bytes
  10:26:21.124774 IP 71.10.124.9.62936 > 10.0.5.16.123: NTPv4, Client, length 48
  10:26:21.124845 IP 10.0.5.16.123 > 71.10.124.9.62936: NTPv4, Server, length 48
  10:26:22.120608 IP 71.10.124.9.62936 > 10.0.5.16.123: NTPv4, Client, length 48
  10:26:22.120805 IP 10.0.5.16.123 > 71.10.124.9.62936: NTPv4, Server, length 48
  10:26:25.125081 IP 71.10.124.9.62936 > 10.0.5.16.123: NTPv4, Client, length 48
  10:26:25.125261 IP 10.0.5.16.123 > 71.10.124.9.62936: NTPv4, Server, length 48

I just wish I could tell ntpd to quit replying to this guy.

Out of curiosity, I never see any KOD packets logged in the logfile.
If my server sends some, should I see entries when it happens?  Surely
clients as egregiously broken as the one above would meet even the most
conservative "discard" settings, shouldn't they?

-- 
Kirk Strauser

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