NETGEAR CGD24N, User Manual, Page: 58 / 84

DOCSIS 2.0 Advanced Cable Gateway CGD24N v2 User Manual
5-10 Customizing Your Network
v1.0, August 2009
5.
Perform one of the following actions:
• Click
Add
to save your settings. The Active Forwarding Rules table now displays the list
of ports that are currently forwarded.
• To delete a service, select the radio button in the Active Forwarding Rules table for the
service that you want to delete, and then click
Delete
.
Considerations for Port Forwarding
• If the IP address of the local server PC is assigned by DHCP, it may change when the PC is
rebooted. To avoid this, you can assign a static IP address to your server outside the range that
is assigned by DHCP, but in the same subnet as the rest of your LAN. By default, the IP
addresses in the range of 192.168.0.2 through 192.168.0.9 are reserved for this purpose.
• Local PCs must access the local server using the PCs’ local LAN address (192.168.0.XXX, by
default). Attempts by local PCs to access the server using the external WAN IP address will
fail.
Remember that allowing inbound services opens holes in your firewall. Only enable those ports
that are necessary for your network.
Configuring Port Triggering
Port triggering is an advanced feature that can be used to easily enable gaming and other Internet
applications that would otherwise be blocked by the firewall. Using this feature requires that you
know the port numbers that are used by the application.
Port triggering is an advanced feature that can be used to easily enable gaming and other Internet
applications that would otherwise be blocked by the firewall. Using this feature requires that you
know the port numbers that are used by the application.
Note:
To reset the selection in the
Services
field and to clear all the fields in the Add
Custom Rules table, click
Reset
.
Note:
For information about port blocking and port forwarding, see “Configuring Port
Blocking” on page 5-7 and “Configuring Port Forwarding” on page 5-9 ..