[SR-Users] IPSec problem with P-CSCF

[Ali Akbar Hemmati]

Yes, the pcap file is attached. The ip of the P-CSCF is 192.168.11.135.
Also 192.168.11.60 is the ip from which UE reaches P-CSCF.


On Sun, Oct 9, 2022 at 10:49 AM Mojtaba <mespio at gmail.com> wrote:

> Hello Ali,
> There are some critical points that should be checked for doing this
> process, But would you please attach the pcap file of the registration
> process,
> Cheers
>
>
> On Sat, Oct 8, 2022 at 2:24 PM Ali Akbar Hemmati <hemmati.ali.a at gmail.com>
> wrote:
>
>> Hi everyone,
>> I am using Kamailio as an IMS server. The UE first sends its SIP REGISTER
>> over TCP and gets a 401 in response. Then the UE starts sending its packets
>> over ESP. These ESP packets reach P-CSCF but are not delivered to its
>> process by the kernel. We can see ESP packets in P-CSCF using wireshark.
>> The ports used are correct (both client and server) based on
>> their prior negotiations. We have also checked xfrm policies using the
>> command `ip xfrm policy list` and seems right regarding prior negotiations.
>> Our Linux kernel version is 5.4 and the OS is Ubuntu 20.04.  Has anyone any
>> clue of the root cause of this problem? Any ideas are appreciated.
>>
>> Thanks,
>> Aliakbar
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>
>
> --
> --Mojtaba Esfandiari.S
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
>   * sr-users at lists.kamailio.org
> Important: keep the mailing list in the recipients, do not reply only to
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