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Session Initiation Protocol (SIP) is transported over UDP and TCP. It is an Application Layer control protocol that creates, modifies, and terminates sessions with one or more participants. SIP is a peer-to-peer protocol.
SIP uses design elements similar to the HTTP request/response transaction model. SIP clients usually use TCP or UDP on port numbers 5060 or 5061 to connect to SIP servers and other SIP endpoints. Port 5060 is commonly used for non-encrypted signaling traffic, whereas port 5061 is typically used for traffic encrypted with Transport Layer Security (TLS).
To configure your environment with SIP in SmartConsole, see Setting Up Your Network with NAT for NAT rules, and SIP Security Rules for examples of Rule Base configuration.
In a basic SIP configuration, a Security Gateway sits between an Internal Network and an External Network, with or without a proxy.
