Hi

Without the force_rport() the reply goes to an incorrect port

Regards

On Tue, 3 Dec 2019 at 17:58, Aymeric Moizard <amoizard@gmail.com> wrote:

Hi,

Tks a lot for the answer.

I'm surprised if that would fix the issue. The missing 200 ok was for an invite with a via containing a public IP and no port.

I would expect sl_send_reply to send something, even if to the wrong port?

Regards

Aymeric

Le mar. 3 déc. 2019 à 16:40, Pepelux <pepeluxx@gmail.com> a écrit :

Sorry ... Try to use force_rport() before sl_send_reply

On Tue, 3 Dec 2019 at 16:37, Pepelux <pepeluxx@gmail.com> wrote:

Hi Aymeric

Try to use force_rport() after sl_send_reply:

secf_check_ua();
if ($? == -2) {

  force_rport();
  sl_send_reply("200", "OK");
  exit;
}

For secf_check_sqli_all() the module drops the packet if a sqli is detected in any header but for other functions as secf_check_sqli_ua() it returns a negative code for detection and you choose if you want to drop the packet or not

Regards

On Tue, 3 Dec 2019 at 15:48, Aymeric Moizard <amoizard@gmail.com> wrote:

Hi all,

I'm testing and moving my kamailio script to use the newer secfilter module.

In the past, I was replying "200 Ok" to "friendly scanners"...

With the newer secfilter module, it looks like I can't send a reply with "sl_send_reply("200", "OK")"

secf_check_ua();

if ($? == -2) {

  sl_send_reply("200", "OK");

  exit;

}

I have read the code of the secfilter, but I was not able to see any specific code to silently discard the SIP request.

I can see in the documentation about "secf_check_sqli_all", that the SIP message is supposed to be "dropped". I can see "w_check_sqli_all" returns 0 on detection and w_check_ua returns -2 upon detection.

Are the message discarded because a negative value was returned?

Would it be doable, using the secfilter, to still reply 200 Ok?

Regards

Aymeric

-- 

Antisip - http://www.antisip.com

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