Chapter 3: Networking and Advanced Settings
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Chapter 3
IP Filtering Web Page (Fig. 19)
This page enables you to enter the IP address ranges of PCs on
your LAN that you don’t want to have outbound access to the
WAN. These PCs can still communicate with each other on your
LAN, but packets they originate to WAN addresses are blocked
by the gateway.
Fig. 20
Fig. 19
MAC Filtering Web Page (Fig. 20)
This page enables you to enter the MAC address of specific
PCs on your LAN that you wish to NOT have outbound access
to the WAN. As with IP filtering, these PCs can still
communicate with each other through the gateway, but
packets they send to WAN addresses are blocked.
Port Filtering Web Page (Fig. 21)
This page enables you to enter ranges of destination ports
(applications) that you don’t want your LAN PCs to send packets
to. Any packets your LAN PCs send to these desination ports will
be blocked. For example, you could block access to worldwide
web browsing (HTTP = port 80) but still allow email service
(SMTP port 25 and POP-3 port 110). To enable filtering, set
Start Port and End Port for each range, and click Apply. To block
only one port, set both Start and End ports the same.
Fig. 21
16096620 DCW615/25. 03 Network
6/26/03, 10:45 AM
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