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Port Forwarding
Port Forwarding is necessary because NAT [=Network Address Translation] only forwards
traffic from the Internet to the LAN if a specific port mapping exists in the NAT translation
table. Because of this, the NAT provides a level of protection for computers that are connected
to your LAN. However, this also creates a connectivity problem when you want to make LAN
resources available to Internet clients, which you may want to do to play network games or
host network applications.
Thus Port Forwarding is necessary to run certain games, chat clients, video-conferencing and
other kinds of application. You might also need to configure port-forwarding if you intend to
host a web server or mail server that is to be visible outside your LAN.
TIP:
In situations where you are hosting a Web Site or, for example, setting up a
regular NetMeeting link, it is advisable to consider implementing a Fixed IP
address, otherwise the dynamic IP address allocated by DHCP will need to be
communicated prior to every user session.
To access Port Forwarding, click on Advanced>Firewall>Port Forwarding
NB4 User Guide
38
YML733Rev1
www.netcomm.com.au
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