This script is Copyright (C) 2006-2013 Ferdy Riphagen and Josh Zlatin-Amishav
The remote system is a SIP signaling device.
The 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
See also :
If possible, filter incoming connections to the port so that it is
used only by trusted sources.
Risk factor :