NTP Problems

[BaronSamedi]

I have a windows 2003 server which keeps losing time. I have attempted to configure w32time to access external time servers but it appears unable to contact them. I have made sure the relevant port (23) is open on the router's firewall but it doesn't appear to make any difference. I've installed several thirdparty NTP clients to see if they'll make contact with an external time server but they can't either. I can ping the external time servers, so I know they are active. I just cannot, it seems contact the relevant port on them.

Does anybody perhaps have some clues on where I'm going wrong?

 

[mlichstein]

Maybe that's a typo, but the NTP port is 123.