named ports

Danny Mayer mayer at gis.net
Tue Jan 24 16:12:15 UTC 2006


Barry Margolin wrote:
> In article <dr11ng$qak$1 at sf1.isc.org>, Danny Mayer <mayer at gis.net> 
> wrote:
> 
>> kalin mintchev wrote:
>>>   hi all...
>>>
>>>   i just saw that named maintains the ports 2213 and 2214 open.
>>>   are these ports listening for remote update instructions?!
>>>
>>>   a quick search on line has these two ports listed as used by a game
>>> called Kali...
>>>
>>>   bind 9.2.4
>>>
>>>   thanks...
>> You are misinformed. named does not use any specific port outside of 53
>> and 953. It will use non-privileged ports (ie > 1024) for its own
>> queries but it will close them as soon as it has received a response.
> 
> I don't think it closes them.  It opens a socket for outgoing queries 
> when it first starts up, and keeps it open the whole time.  Unless you 
> use the "query-source" option in named.conf, it lets the stack choose 
> the port number.
> 

Yes, sorry about that. Under normal operation it will keep the same port
open. The rest of the statement was correct.

Danny



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