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NB9/NB9W ADSL2+ VoIP Router 51
YML790 Rev8
Advanced > NAT > Port Triggering
Port triggering is similar to Port Forwarding however where port forwarding is tied to a specific IP address,
Port triggering is dynamic and is tied to a particular application event request. The ‘Custom Application’
settings, or the pre-sets that are provided by the application names in the drop-down menu, allows specific
ports to be opened by the named applications. The ‘trigger’ is the outgoing request, which then ‘opens’ the
ports specified in the Open Port Start-End range to enable the application to reply.
For this to work, you need to know the Outgoing Port(s) which the application uses to Send requests, and
then specify the Open Port range for the reply. Some typical port ranges are as follows; for other applications,
check the vendor websites.
Application Outgoing Port Reply Port
Battle.net
6112 6112
DialPad
7175 51200, 51201,51210
ICQ
4000 4000
ICU II
2019 2000-2038, 2050-2051, 2069,
IRC
6667 531, 6666, 6667
MSN Gaming Zone
47624 2300-2400, 28800-29000
PC to Phone
12053 12120,12122, 24150-24220
Quick Time4
554 6970-6999
wowcall
8000 4000-4020