Rob wrote:
Martin Burnicki <[email protected]> wrote:
- NAT doesn't hurt at all, unless you are trying to use NTP's authentication
NAT in itself does not hurt, but when you want to be a timeserver for
a large number of clients, it can be a problem.
Many home routers have no "static NAT" but only "portforwarding" which
creates dynamic NAT entries on demand. As UDP has no session concept,
such NAT entries have a lifetime of usually a couple of minutes.
When you serve thousands of clients, this tends to overflow the NAT
table or stress the lookup code so much that it overloads the CPU.
Haven't had such case, yet since my home NTP server doesn't serv 1000s
of clients, but sounds reasonable and should be kept in mind.
Martin
--
Martin Burnicki
Meinberg Funkuhren
Bad Pyrmont
Germany
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