The SIP session helper The SIP session-helper is a high-performance solution that provides basic support for SIP calls passing through the FortiGate by opening SIP and RTP pinholes and by performing NAT of the addresses in SIP messages. The SIP session helper: Understands SIP dialog messages. l Keeps the states of the SIP transactions between […]
SIP messages and media protocols This section provides an overview of SIP messages and how they communicate information about SIP sessions and how SDP, RTP, and RTCP fits in with SIP communications. SIP uses clear text messages to start, maintain, and end media sessions between SIP user agent clients (UACs) and user agent servers (UASs). […]
Common SIP VoIP configurations This section describes some common SIP VoIP configurations and simplified SIP dialogs for these configurations. This section also shows some examples of how adding a FortiGate affects SIP processing. Peer to peer configuration In the peer to peer configuration shown below, two SIP phones (in the example, FortiFones) communicate directly with […]
Inside FortiOS: Voice over IP (VoIP) protection The FortiOS SIP Application Layer Gateway (ALG) allows SIP calls to pass through a FortiGate by opening SIP and RTP pinholes and performing source and destination IP address and port translation for SIP and RTP packets. There are a large number of SIP-related Internet Engineering Task Force (IETF) […]
Introduction This FortiOS Handbook chapter contains detailed information about how FortiGates processes SIP VoIP calls and how to configure the FortiGate to apply security features to SIP calls. This document describes all FortiGate SIP configuration options and contains detailed configuration examples. Before you begin Before you begin to configure VoIP security profiles, including SIP, from […]
Troubleshooting and logging This section explains how to troubleshoot logging configuration issues, as well as connection issues, that you may have with your FortiGate unit and a log device. This section also contains information about how to use log messages when troubleshooting issues that are about other FortiGate features, such as VPN tunnel errors. Using […]
Advanced logging This section explains how to configure other log features within your existing log configuration. You may want to include other log features after initially configuring the log topology because the network has either outgrown the initial configuration, or you want to add additional features that will help your network’s logging requirements. The following […]
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