[ntp:questions] Is it possible to run ntpd server behind a firewall?

Kevin Oberman oberman at es.net
Wed Oct 17 16:53:26 UTC 2007

> But why the following entry exists in /etc/services file?
> ntp             123/tcp                         # Network Time Protocol

It has been the policy of IANA/ICANN for some time for protocols to be
assigned in tcp/udp pairs even if the protocol uses only one of
them. This is wasteful of a scarce resource, but eliminates a lot of
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
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