![]() SIP ALG ” Advanced > WAN Setup, check “ Disable SIP ALG ”, click Apply Incompatible Incompatible Default works Must disable ALG by telnet: port=5060 > save all Incompatible From the CLI :connection appconfig application= SIP SIP _ ALG = disabled. Fortinet recommends trying to disable some (not all services can be disabled completely) services that use these open ports, for example to close ports 5060 for SIP and 2000 for Skinny, they give us: config system settings set default-voip-alg-mode kernel-helper-based end. Kernel-helper-based NAT filtering, uncheck box next to “ Disable for transcoding set sip -helper disable To view the list of VoIP service providers, Fortinet : Fortigate : Disabling the SIP ALG in a VoIP profile SIP is enabled by default in a VoIP profile 1Step 1 - Select 1Step 1 - Select. Usually, you can find two VOIP profiles for Fortinet firewalls. ![]() Enable the IGMP snooping querier on VLAN 1. The SIP ALG – VOIP in FortiOS 6 – Fortinet GURU. 4) or SIP-ALG (default in newer versions). In the default setting of a Fortigate the SIP ALG is active. SIP ALG is SIP quick video showing how to disable SIP helpers on a Fortinet Fortigate running FortiOS 6. The SIP ALG acts as an independent firmware program to prevent firewall-related issues on the router.
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