[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Named daemon and port 32770? (and port 32985 on restart)



On di, 2002-10-15 at 11:50, Christian Schuerer-Waldheim wrote:

> > Any ideas on why there is a single UDP port open? My configuration is
> > pretty simple, no controls configured for the name server and a 'listen-on
> > port 53' statement in the config file.... 
> 
> As I can remember, bind is controlled (start, stop, etc) via an extra
> daemon. For this it would need an open port to listen for commands.

That wouldn't be a smart thing to do, usign a random port for listening
for admin commands. Fortunately bind doesn't do that and uses 953/tcp
for this (at least for bind9; haven't seen or used bind8 for almost 2
years)

I have these ports in use for bind on my server at home:

tcp        0      0 pub.lic.ifa.ce:53       0.0.0.0:*               LISTEN      110        4774236    21576/named         
tcp        0      0 10.2.1.1:53             0.0.0.0:*               LISTEN      110        4425670    21576/named         
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      110        4425668    21576/named         
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      110        4425680    21576/named         
udp        0      0 0.0.0.0:39946           0.0.0.0:*                           110        4425675    21576/named         
udp        0      0 pub.lic.ifa.ce:53       0.0.0.0:*                           110        4774235    21576/named         
udp        0      0 10.2.1.1:53             0.0.0.0:*                           110        4425669    21576/named         
udp        0      0 127.0.0.1:53            0.0.0.0:*                           110        4425667    21576/named         

Googling a bit will tell you that it uses that random high-numbered udp
port as a source for recursive queries, unless the query-source option
is set.

-- 
Tot ziens,
Bart-Jan Vrielink



Reply to: