FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
The FortiGate series supports 2 majors VoIP protocol application layer gateways (ALGs):
SIP
SCCP (Skinny)
Each ALG allows the FortiGate to provide NAT firewall protection of VoIP devices, monitoring and blocking of unwanted VoIP traffic, and IPS protection of VoIP protocol anomalies, denial of service attacks, buffer overflows, and header manipulation attacks.
Others protocols (H.323 and MGCP) are supported using session-helper.
