[OpenSIPS-Users] Nat_keepalive help

[Ali Pey]

BTW. the error you are getting is probably for the fact that your client
doesn't like the Notify pinging. Change it to Options message and it will
work.

Regards,
Ali Pey



On Thu, Dec 12, 2013 at 11:19 AM, Ali Pey <alipey at gmail.com> wrote:

> Hello Miha,
>
> The best way to handle nat keep alive is from your sip clients. They
> usually offer a variety of option and the most efficient one is the udp
> pinging, in which it keeps sending opensips a udp packet with 4 zeros in it
> to keep the nat binding open. That would work perfectly if you have static
> nat binding on the opensips server which means doing port forwarding on the
> firewall the opensips sits behind.
>
> You can also enable options pinging on your client as well and that will
> keep nats open on both side as opensips will respond with 200 OK.
>
> Enabling nat keep alive from opensips is more expensive in terms of
> resources but that is also a possible way to do.
>
> Regards,
> Ali Pey
>
>
>
> On Thu, Dec 12, 2013 at 7:16 AM, Miha <miha at softnet.si> wrote:
>
>>  HI,
>>
>> I need a little help with nat. UAC register's ok and it is reachable but
>> after a while it become unreachable due to nat issue. If I use
>> nat_keepalive on uac deivce everything is ok, but I would like that this is
>> handled by opensips.
>>
>> I tried to use  nat_keepalive but getting all the time this:
>>
>>  54.820695 opensips -> uac_public_ip SIP 308 Request: NOTIFY
>> sip:uac_public_ip:13401 |
>>  54.829847 uac_public_ip -> opensips SIP 297 Status: *481 Call
>> Leg/Transaction Does Not Exis*t |
>>
>> What is the best way to implement this?
>>
>>
>>
>> modparam("registrar", "received_avp", "$avp(received_avp)")
>> modparam("registrar", "tcp_persistent_flag", 10)
>> modparam("nathelper", "received_avp", "$avp(received_avp)")
>> modparam("nathelper", "natping_interval", 10)
>> modparam("nathelper", "ping_nated_only", 1)
>>
>>
>>               if (nat_uac_test("18")) {
>>                         xlog("fixing nat");
>>                          if (method=="REGISTER") {
>>                                 nat_keepalive();
>>                                  fix_nated_register();
>>
>>                         } else {
>>                                 fix_nated_contact();
>>                         }
>>                 force_rport();
>>                 }
>>
>> tnx!
>>
>> miha
>>
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
>>
>
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