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Is it possible to use ntpdate behind a HTTP proxy with authentication? In case it is not possible, are there any good alternatives?

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What OS please? – KCotreau Jul 6 '11 at 17:09
Linux in my case (don't think it matters much though). – Ton van den Heuvel Jul 6 '11 at 19:52
It only mattered because it was harder to find anything remotely for Windows. The key search I used was "NTP over HTTP", in case you want to search further. – KCotreau Jul 6 '11 at 19:58
Thanks for the tip :) – Ton van den Heuvel Jul 6 '11 at 19:59
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If it is purely an HTTP proxy, it is using port 80, so the basic answer is no to that specifically. NTP uses UDP port 123. If it is a more generic proxy server, serving all ports, then maybe.

There are some programs out there that do NTP over HTTP. I do not use Linux, but this one might do it:

http://www.rkeene.org/oss/htp/ (still not sure if this will do authentication either).

I could not find one for Windows, but I will post back if I do.

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Again for Linux, so I cannot add much other than a link: mina86.com/2010/01/16/ntp-over-http There might also be something that one of these publishes: nist.gov/pml/div688/grp40/softwarelist.cfm – KCotreau Jul 6 '11 at 17:12
The NTP over HTTP link is inspiring, thanks for that! – Ton van den Heuvel Jul 6 '11 at 19:50
@Ton van den Heuvel Thank you for your great accpetance rate. – KCotreau Jul 6 '11 at 19:51
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