[asterisk-bugs] [Asterisk 0015201]: IAX2 immediately retries after a failed registration, causing a flood of failed registrations

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15201 
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Reported By:                gmza
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15201
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.25 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-05-26 17:15 CDT
Last Modified:              2009-05-27 02:13 CDT
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Summary:                    IAX2 immediately retries after a failed
registration, causing a flood of failed registrations
Description: 
When one asterisk box (host1) has a line such as:

register => 12345:abc at host2

and no such user exists in host2's iax.conf file, host1 will flood host2
with failed registration attempts using as much bandwidth as it can
consume.


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 (0105490) indreias (reporter) - 2009-05-27 02:13
 https://issues.asterisk.org/view.php?id=15201#c105490 
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The issue is probably related with issue 14867 (why is access denied?) -
details here: http://markmail.org/message/3jh7rvdsc5h3xita

We confirm the flood 

- for asterisk log file: ~ 170 error lines per secconds = 30 kB/s
[May 27 10:00:30] NOTICE[27653] chan_iax2.c: Host x.x.x.x failed MD5
authentication for '999' (eb3762207ba72cbccb58e4b45b7110ea != 23ee4295e439 
      07417b9975c514037dd9)

- for the network interface: ~ 220 kb/s
(observed with iptraf on a "quiet" PBX = no calls, only one ssh session
with iptraf = ~ 28 kb/s)

we hoped to have these problems resolved in 1.4.25 but it looks that IAX2
bugs are not a priority.

we are still thinking why should we upgrade our production PBXs
(1.2.x).... 

Issue History 
Date Modified    Username       Field                    Change               
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2009-05-27 02:13 indreias       Note Added: 0105490                          
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