sip alg Disable 1800 series

[enkhnasan]

We used 3CX Phone System 

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

[_Val_]

Local on central management? SW version?

[G_W_Albrecht · Accepted solution]

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

Also this discussion has helpfull hints: https://community.checkpoint.com/t5/Security-Gateways/VoIP-Issue-and-SMB-Appliance-600-1000-1200-140...

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

[enkhnasan]

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

[enkhnasan]

 

[G_W_Albrecht]

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.

[enkhnasan]

[enkhnasan]

i dont see drops 

only sound is not transmitted at all

[enkhnasan]

Do I need to enable these two settings

[G_W_Albrecht]

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

[WiVM]

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.

[G_W_Albrecht]

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 !

[WiVM]

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@G_W_Albrecht wrote:

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

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Tried both, none worked.