[ntp:questions] Is it possible to run ntpd server behind a firewall?
scwang at ios.ac.cn
Wed Oct 17 03:14:32 UTC 2007
Danny Mayer wrote:
> Shaochun Wang wrote:
>> The stupid net administrator of my institute blocked all UDP datagram
>> in the firewall. I know that NTP uses UDP to do its work, but is it
>> possible to let ntpd use TCP?
> No. You cannot "let" ntpd use TCP. NTP is a UDP-only protocol. Talk to
> your net admin. Maybe he can set up a NTP server on the firewall.
But why the following entry exists in /etc/services file?
ntp 123/tcp # Network Time Protocol
More information about the questions