The certificate configured at Kamailio is the 'server' certificate.

The client certificate will be configured in the SIP client (e.g. the SIP phone).

The [server] section will require a client certificate from the softphone if require_certificate=yes. It will also validate the client certificate against the local configured valid ca_list by using verify_certificate=yes.

If now a SIP message enters the routing script and it was received by TLS you know that the sip phone sent a clietn certificate which could be validated with the ca_list.

now, if you want to differ softphones you have to take a look at the certificate parameters, e.g. using select framework: http://sip-router.org/docbook/sip-router/branch/master/select_list/select_li...

e.g. if ( @tls.peer.subject.cn == "George Bush") ...

regards Klaus

Am 09.02.2011 17:39, schrieb Daniel GROTTI:

Hi all, I would like to use kamailio 3.1 with TLS and verified also a client certificate.

My tls.cfg file is as follow:

--- tls.cfg ----

..... .....

[server:MY_IP:5061] method = TLSv1 verify_certificate = yes require_certificate = yes private_key = default_key.pem certificate = default_cert.pem ca_list = default_ca.pem

[client:default] verify_certificate = no require_certificate = no

.... ....

So I want to verify the client certificate, to do that I use "is_peer_verified()" function in kamailio.cfg. As tls.cfg shows, I have to send to my clients the CA certificate and the client certificate (default_cert.pem + default_key.pem - signing by the CAcert). This client certificate is unique for all clients. Everything works fine.

But suppose I wanted to create a client certificate for client 1 (cert_1.crt), and a different client certificate for client 2 (cert_2.crt) and I want to configure kamailio to be able to verified this different certificates.

Does it possible ? How can I configure the tls.cfg file to do that ?

I try to do something like this:

[server:MY_IP:5061] method = TLSv1 verify_certificate = yes require_certificate = yes private_key = default_key_1.pem certificate = default_cert_1.pem private_key = default_key_2.pem certificate = default_cert_2.pem ca_list = default_ca.pem

But when kamailio restart it seems that it read only the last couple of row certifcate/private_key.

Regards,

Daniel G

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