NTP server problem
Peter Johnston
paj at beermat.demon.co.uk
Wed Feb 11 12:50:41 UTC 2004
> Use 'ntpq -p' to see that ntpd is working properly.
>
> Open port UDP:123 in your firewall.
>
> > When I run 'lsof -i TCP' there is no mention of 'ntpd' or port
> > 123 anywhere.
>
> NTP uses UDP, not TCP. Try 'lsof -i UDP' and you should see it:
> # lsof -i UDP
> COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
> portmap 3730 rpc 3u IPv4 3374 UDP *:sunrpc
> cupsd 3786 root 2u IPv4 3497 UDP *:ipp
> ntpd 3866 ntp 4u IPv4 3602 UDP *:ntp
Aha. That works now. Thanks very much.
Pete
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