how to disable SIP ALG

[rolo]

hello, we have a fgt-40f. we also use voip and it looks like that SIP ALG blocks it. on web GUI i couldn't find anywhere to disable it. tried several forum but most of them are for old firmware current firmware is v6.2.5  can anyone send a configuration how to disable it ?

[Toshi_Esumi · Accepted solution]

It hasn't changed much since 5.2. Below KB is still current since it's mentioning about the minor CLI change since 6.2.2.

https://kb.fortinet.com/kb/documentLink.do?externalID=FD36405

[Toshi_Esumi · Accepted solution]

It hasn't changed much since 5.2. Below KB is still current since it's mentioning about the minor CLI change since 6.2.2.

https://kb.fortinet.com/kb/documentLink.do?externalID=FD36405

[rolo]

hi, thanks for replying. I've a question about session helper what it does and should i remove it too ? 

[Toshi_Esumi · Accepted solution]

As mentioned in the KB, it's the original/old/not-VDOM-based way to handle SIP sessions before they implemented ALG(proxy base). Both basically do the same, and in case you don't want a FW to tweak SIP sessions, you need to disable both.