Cisco DDR2200 Series, Installation And Operation Manual

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Incoming IP Filtering
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11 In the Destination Port field, enter the port number for the server receiving the
packets. You can enter one port or a range of ports using the following format:
port or port:port.
Example: 0:5 indicates ports 0 through 5.
12 Do you want to select all of the WAN interfaces?

If yes , check the Select All field under WAN Interfaces (Configured in
Routing mode and with firewall enabled only).

If no , clear the Select All field under WAN Interfaces (Configured in Routing
mode and with firewall enabled only).
13 Click Save/Apply to add the filter.
Enabling the Filtering Function
To enable the filtering function, complete the following steps.
1 Click Security on the main screen. The MAC Filtering screen opens by default.