7.10 STUN & UPnP Settings
STUN
S
imple
T
raversal of
U
ser Datagram Protocol through
N
etwork Address Translators
is a protocol that allows
applications to determine the types of NATs are in
between them and the internet. STUN also provides
the ability for applications to determine the public IP
addresses allocated to them by the NAT.
STUN
Server :Portnumber
Enter STUN domain name or IP address if STUN is
enabled.
User Defined
External/Port
Enable or disable the manual configuration of
external WAN IP/Port settings (such as your Router’s
WAN port) that link to the Internet for NAT traversal.
External IP Address
Enter the public IP address of the network device
(such as a DSL-Router) that links to the Internet for
NAT traversal if “User Defined External IP/Port” is set
to “enabled”.
External SIP Port
Enter the outbound SIP port number (SIP registration
and signaling) of the network device (such as Router)
that links to the Internet for NAT traversal if “User
Defined External IP/Port” is set to “enabled”.
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