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

Rick Jones rick.jones2 at hp.com
Thu Oct 18 18:34:32 UTC 2007


imacat <imacat at mail.imacat.idv.tw> wrote:
>     When IANA officially assigns a port, it always assigns both TCP and
> UDP for easier maintainance and fewer confusion.  When you see "ntp
> 123/tcp" it doesn't necessarily mean that NTP is using TCP/123.  Just to
> reserve it in order to prevent future confusion.

"Reserve" may be too strong a word - it leads to confusion among
recent inductees who then think the likes of /etc/services prevents
others from binding to thsoe port numbers.

rick jones
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