FortiGate DNS FortiOS 5.6

DNS servers resolve domain names (For example to IP address. The FortiGate uses DNS servers to resolve names to IP address. The settings for this is under Network > …

Disable SIP ALG

SIP ALG allows the firewall to dynamically open ports for audio traffic as well as the changing of IP address when NAT is used and the inspection of VoIP traffic.


An issue which I have had was when a site to site VPN dropped, traffic for the VPN would be routed out the default route and a session was created.