Netgear Cable/DSL ProSafe Firewall FR328S User Manual download pdf (Page 56)

FR328S ProSafe Firewall with Dial Back-Up Reference Manual v2

5-10 Protecting Your Network

M-10207-01, Reference Manual v2

Inbound Rule Example: Allowing Videoconference from Restricted Addresses

If you want to allow incoming videoconferencing to be initiated from a restricted range of outside

IP addresses, such as from a branch office, you can create an inbound rule. In the example shown

in Figure 5-7, CU-SeeMe connections are allowed only from a specified range of external IP

addresses. In this case, we have also specified logging of any incoming CU-SeeMe requests that

do not match the allowed parameters.

Figure 5-7. Rule example: Videoconference from Restricted Addresses

Considerations for Inbound Rules

• If your external IP address is assigned dynamically by your ISP, the IP address may change

periodically as the DHCP lease expires. Consider using the Dynamic DNS feature in the

Advanced menus so that external users can always find your network.

• If the IP address of the local server PC is assigned by DHCP, it may change when the PC is

rebooted. To avoid this, use the Reserved IP address feature in the LAN IP menu to keep the

PC’s IP address constant.

• Local PCs must access the local server using the PCs’ local LAN address (192.168.0.11 in the

example in Figure 5-7 above). Attempts by local PCs to access the server using the external

WAN IP address will fail.

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Netgear Cable/DSL ProSafe Firewall FR328S User Manual Page 56