[NEWBIE] Port Question

[Barry Margolin]

In article <abrdnd$1jvo$1 at isrv4.isc.org>, Socratez <socratez at lycos.com> wrote:
>I am setting up a file server at work that i want to act as a
>Web/File/DNS/Caching/Mail server. My first thought's are which ports to open
>up for each of these services. Web is 80, mail is 23 125, DNS i am not sure
>as well as caching..... if anybody could give me some help i would greatly
>appreciate it. Thank you in advance, i can only be a newbie for so
>long.........

DNS is TCP and UDP port 53.  Caching DNS will send out to port 53; by
default, the source port will be a random high-numbered port, but you can
use the "query-source" option to specify a particular port, and then only
open that port.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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