topic Re: sip alg Disable 1800 series in Spark Firewall (SMB)

sip alg Disable 1800 series

enkhnasan — Tue, 08 Jun 2021 05:37:24 GMT

We used 3CX Phone System

How to Disable SIP ALG on CP-1800 series???

Re: sip alg Disable 1800 series

_Val_ — Tue, 08 Jun 2021 08:42:15 GMT

Local on central management? SW version?

Re: sip alg Disable 1800 series

G_W_Albrecht — Tue, 08 Jun 2021 11:12:21 GMT

If locally managed, look into sk113573: How to configure VoIP on Locally Managed 600 / 700 / 910 / 1100 / 1200R / 1400 / 1500 appliances

Also this discussion has helpfull hints: https://community.checkpoint.com/t5/Security-Gateways/VoIP-Issue-and-SMB-Appliance-600-1000-1200-1400/td-p/40613

And this is the basic catch-it-all: sk95369: ATRG: VoIP

Re: sip alg Disable 1800 series

enkhnasan — Wed, 09 Jun 2021 11:23:14 GMT

thank you reply it

we have used 3CX Phone system

but when I make a call, I can't hear the persons voice

This is done according to the instructions, but the sound is not transmitted at all

Re: sip alg Disable 1800 series

enkhnasan — Wed, 09 Jun 2021 11:32:06 GMT

Re: sip alg Disable 1800 series

G_W_Albrecht — Wed, 09 Jun 2021 13:08:09 GMT

Look into the logs - do you see drops ? And do you have defined the rule(s) for your kind of deployment according to sk113573 ? Key is to keep inspection for these services enabled.

Re: sip alg Disable 1800 series

enkhnasan — Wed, 09 Jun 2021 13:12:40 GMT

Re: sip alg Disable 1800 series

enkhnasan — Wed, 09 Jun 2021 13:13:40 GMT

i dont see drops

only sound is not transmitted at all

Re: sip alg Disable 1800 series

enkhnasan — Wed, 09 Jun 2021 13:19:23 GMT

Do I need to enable these two settings

Re: sip alg Disable 1800 series

G_W_Albrecht — Thu, 10 Jun 2021 13:09:06 GMT

The sencond one could be worth trying - but primarily, sk113573 is important for configuration.

Re: sip alg Disable 1800 series

WiVM — Fri, 11 Jun 2021 10:09:10 GMT

Hi,

I don't want to hijack the post, but I seem to have the same issue with 3CX as the original poster:

The 3CX firewall test reports:
detecting SIP ALG... detected (received 652ddfc6 ≠ 56d26e13) (How to resolve?)

I am using a local Check Point 730 Appliance - Version: R77.20.75 (990172286)

Went through the suggested posts already. Problem remains. The rest of the 3CX traffic is working fine.

Re: sip alg Disable 1800 series

WiVM — Fri, 11 Jun 2021 10:16:53 GMT

@G_W_Albrecht wrote:
The sencond one could be worth trying - but primarily, sk113573 is important for configuration.

Tried both, none worked.

Re: sip alg Disable 1800 series

G_W_Albrecht — Sun, 13 Jun 2021 07:30:56 GMT

Please update to a current firmware first, i suggest R77.20.87 Build 990173083 for 700/900/1400

Then contact TAC to get the issue resolved, use chat for a quick solution !