SIP
This signature detects Session Initiation Protocol (SIP), which is a protocol used for establishing sessions in an IP network. It is used for VOIP and other text and multimedia sessions, like instant messaging, video, online games, etc. SIP clients usually use TCP/UDP port 5060 to connect to SIP servers and other SIP endpoints.
Available to all SRX running 12.3X48+
Available to all MX running 20.2R1+
Available to all vSRX running 20.3R1+