Reverse NTP server?

[rmeltg]

I have a setup of about 100 client machines that need to have their times syncronized. These client machines are not on an external network and most cannot see out to any internal sever.

But I do have a single machine that can access all 100 client machines.

Question is with this setup how can I sync every client's time to this single server machine's time. Note there are different timezones on the different client machines.

Is it possible to do via some sort of reverse ntp server... or is there a way to use the date command to do what i need without messing up the timezones?

How you would handle this situation?

Thanks.

[rcgreen]

Just run ntp on all of them. One will need internet access.
Sync it to a known good ntp server on the internet.
Sync all of the others to it. The individual computers can handle
their own time zone issues and still sync to your time server.

[rmeltg]

I wish it was that easy, thats the problem though, the clients can't all see a single host.

It would have to be setup as an ntp server pushing updates (is that possible) the server machine can see all of the clients, but they cant see it. That single server can get to the internet to sync its time, but how do I cleanly update the clients from this one server.