Figure 29 Routing Table, Add Screen
4.Under the Network Address field, enter the IP address of the remote PC or network you want to configure a route for. Be sure to enter the four separate parts of the IP address into the four separate boxes in the field.
5.Under the Subnet Mask field, enter a subnet mask for the remote PC you entered above. If you are providing the route for a specific PC then the subnet mask of the PC should be 255.255.255.255. Otherwise a subnet mask indicating the size of the network should be used. Be sure to enter the four separate parts of the subnet mask into the four separate boxes in the field.
6.Under the Gateway field, enter the IP address of the intermediary device that stands between this router and the remote PC. Be sure to enter the four separate parts of the IP address into the four separate boxes in the field.
7.Under the Interface field, select whether the gateway is attached to the router’s WAN port or one of the LAN ports. If the ENR1504 is connected to the Internet then it should
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not need a route to the WAN so LAN should almost always be set. If the Router is being used to create a subnetwork then the WAN may be more commonly used.
8.Click Apply. This will take you back to the Routing Table screen.
9.To change the routing for a PC, select the PC’s IP address on the Routing Table screen (see Figure 28 on page 66) and click the Modify button.
10.To delete the routing table entry for a PC, select the PC’s IP address on the Routing Table screen (see Figure 28 on page 66) and click the Delete button.
CONFIGURING PACKET FILTERING
Packet filtering allows you to route or block data based on information in each individual data packet. For example, if you want to allow only email from a particular server and block all other traffic, you can configure the router to allow only those packets that come in on the mail protocol ports (see Table 2 on page 51 for a few of the most commonly needed
1.Open a browser window and login to the router.
2.In the menu at the left side of the screen, click Firewall Security and then Packet Filtering. This displays the Packet Filtering screen (see Figure 30).
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