Sponsor: VoiceMeUp - Corporate & Wholesale VoIP Services

VoIP Mailing List Archives
Mailing list archives for the VoIP community
 SearchSearch 

[asterisk-users] Asterisk 14.0.2 opens a high numbered UDP port


 
Post new topic   Reply to topic    VoIP Mailing List Archives Forum Index -> Asterisk Users
View previous topic :: View next topic  
Author Message
bbinab at gmail.com
Guest





PostPosted: Thu Oct 13, 2016 1:37 pm    Post subject: [asterisk-users] Asterisk 14.0.2 opens a high numbered UDP p Reply with quote

What part of Asterisk 14.0.2 opens the random, high numbered (33094
currently) UDP port? This port is opened even without any channel
drivers loaded.

$ sudo netstat -ltunp | grep asterisk
udp 0 0 0.0.0.0:51488
0.0.0.0:* 13830/asterisk
udp 0 0 0.0.0.0:5060 0.0.0.0:*
13830/asterisk
udp 0 0 :::42516 :::*
13830/asterisk



--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

Join the Asterisk Community at the 13th AstriCon, September 27-29, 2016
http://www.asterisk.org/community/astricon-user-conference

New to Asterisk? Start here:
https://wiki.asterisk.org/wiki/display/AST/Getting+Started

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
Back to top
gjoseph at digium.com
Guest





PostPosted: Thu Oct 13, 2016 7:59 pm    Post subject: [asterisk-users] Asterisk 14.0.2 opens a high numbered UDP p Reply with quote

On Thu, Oct 13, 2016 at 12:35 PM, Brandon B. <bbinab@gmail.com (bbinab@gmail.com)> wrote:
Quote:
What part of Asterisk 14.0.2 opens the random, high numbered (33094 currently) UDP port? This port is opened even without any channel drivers loaded.

$ sudo netstat -ltunp | grep asterisk
udp        0      0 0.0.0.0:51488 0.0.0.0:*                               13830/asterisk
udp        0      0 0.0.0.0:5060 0.0.0.0:*                               13830/asterisk
udp        0      0 :::42516 :::*                                    13830/asterisk




Those ports are used by the underlying pjproject DNS resolver.  The resolver is always listening on those ports for DNS query responses.  1 for IPV4 and 1 for IPV6.  Your firewall should only be allowing responses to flow through to those ports that match outgoing requests.






 
Quote:

--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

Join the Asterisk Community at the 13th AstriCon, September 27-29, 2016
     http://www.asterisk.org/community/astricon-user-conference

New to Asterisk? Start here:
     https://wiki.asterisk.org/wiki/display/AST/Getting+Started

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
  http://lists.digium.com/mailman/listinfo/asterisk-users




--
George JosephDigium, Inc. | Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org
Back to top
Display posts from previous:   
Post new topic   Reply to topic    VoIP Mailing List Archives Forum Index -> Asterisk Users All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group

VoiceMeUp - Corporate & Wholesale VoIP Services