[ntp:questions] Re: Question on abusive clients.

Danny Mayer mayer at ntp.isc.org
Sun Dec 25 03:33:47 UTC 2005

Hal Murray wrote:
>>ntpdate uses a random port by default. However standard ntp servers only
>>send and receive NTP packets on port 123.
> Is that right?  I thought ntpdate used 123 by default so it gets an error
> message if ntpd is running rather than trashing the clock out from under
> ntpd.
> The html doc says -u and -d use an unprivileged port, but I don't
> see any place where it says which port it uses if you don't specify
> -u or -d.

Sorry, you're quite right. It's reverse of what I said.


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