This script is Copyright (C) 2006-2013 Ferdy Riphagen
The remote system is running a server that speaks the Inter-Asterisk
The Inter-Asterisk eXchange protocol (IAX2) is used by the Asterisk PBX
Server and other IP telephony clients/servers to enable voice
communication between them.
See also :
If possible, filter incoming connections to the port so that it is used
by trusted sources only.
Risk factor :