SynopsisThe remote system is a SIP signaling device.
DescriptionThe remote system is running software that speaks the Session Initiation Protocol (SIP).
SIP is a messaging protocol to initiate communication sessions between systems. It is a protocol used mostly in IP Telephony networks / systems to setup, control, and teardown sessions between two or more systems.
SolutionIf possible, filter incoming connections to the port so that it is used only by trusted sources.