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Configuring the security interfaces 87
Model 3201 G.SHDSL Integrated Access Device User Guide 6 • Security
The next step in configuring the router is adding the default gateway route. Since the WAN IP address of the
3201 modem at the CO site is 192.168.101.2, this will be the gateway for the 3201 modem at the CPE site,
the modem we are currently configuring.
1. Click on IP Routes under Configuration on the 3201 modem’s Menu.
2. Click on Create a New IP Route.
3. Enter 192.168.101.2 in the box adjacent to Gateway.
4. Leave Destination and Netmask both as 0.0.0.0 because this is the gateway default route.
5. Click on Create and the route will be entered.
6. The default gateway can be verified by clicking on IP Routes under Status in the menu.
Configuring the security interfaces
The interfaces and routes have been configured on the 3201 Router modem which will function as the firewall.
The Ethernet side of the 3201 will be configured to be an internal security interface whereas the WAN side is
configured as an external security interface since it is on “public” side of the modem connection.
1. Click on Security under Configuration on the 3201 modem’s menu.
2. Under Security Interfaces, click on Add Interface.
3. Select Name of the WAN port (ipoa-0) and Interface Type to be external. Click on Apply.