[Users] too many branches for latest X-lite 3

[Jan ONDREJ (SAL)]

Hi,

  thank you for information. I can confirm that now. It helped me to solve
this problem and this user can log in, but after some time he must wait
for location expiration to log in again. He was been asked to downgrade or
replace it's client.

			SAL

On Tue, Jun 19, 2007 at 11:08:55AM +0300, Bogdan-Andrei Iancu wrote:
> Hello Jan,
> 
> the only way to limit the number of registrations (stored ones) is 
> indeed via "max_contacts", but in this case, the newest registration 
> attempts will be dropped. I mean this will protect your server, but the 
> new Xten will not register anymore.
> 
> regards,
> bogdan
> 
> Jan ONDREJ (SAL) wrote:
> >Hello,
> >
> >  I have problems with too many branches for latest X-Lite release 1011s
> >stamp 41150. Other phones are working properly. X-Lites are trying to
> >subscribe each 40 seconds with different rinstance strings. Example:
> >
> >mysql> select contact,last_modified from location where username='1538' 
> >order by last_modified;
> >+-----------------------------------------------------------+---------------------+
> >| contact                                                   | 
> >last_modified       |
> >+-----------------------------------------------------------+---------------------+
> >| sip:1538 at 158.197.240.237:51092;rinstance=897b6ff9462755eb | 2007-06-13 
> >14:17:41 | | sip:1538 at 158.197.240.237:51092;rinstance=059223be49bdc5a4 | 
> >2007-06-13 14:18:21 | | 
> >sip:1538 at 158.197.240.237:51092;rinstance=e3b22d920bdd9b61 | 2007-06-13 
> >14:19:00 | | sip:1538 at 158.197.240.237:51092;rinstance=163058af66fd3b21 | 
> >2007-06-13 14:19:39 | | sip:1538 at 158.197.10.104:5060                       
> >| 2007-06-13 15:10:01 | 
> >+-----------------------------------------------------------+-------------------
> >
> >After some time there is 30-90 subscriptions for some users (not for all
> >users of X-lite, but only for lastest Xlite).
> >
> >After some time openser is sending many SUBSCRIBE requests to these users
> >and eats all of CPU, my calls are very slow.
> >
> >I am now trying to play with "max_contacts" registrar parameter set to 5.
> >Is it a problem of X-lite and how to prevent these DOS attacks from wrong
> >softphones?
> >
> >Thank you.
> >
> >				SAL
> >
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> >
> >