Netgear FVX538 FVX538 Reference Manual - Page 78

the 134.177.0.0 network, your firewall will forward your request to the ISP. The ISP forwards your

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Reference Manual for the ProSafe VPN Firewall 200 FVX538 4. Select Active to make this route effective. 5. Type the Destination IP Address of the final destination. 6. Type the IP Subnet Mask for this destination. If the destination is a single host, type 255.255.255.255. 7. Type the Gateway IP Address, which must be a firewall on the same LAN segment as the firewall. 8. Type a number between 1 and 15 as the Metric value. This represents the number of firewalls between your network and the destination. Usually, a setting of 2 or 3 works, but if this is a direct connection, set it to 1. 9. Click Apply to have the static route entered into the table. As an example of when a static route is needed, consider the following case: • Your primary Internet access is through a cable modem to an ISP. • You have an ISDN firewall on your home network for connecting to the company where you are employed. This firewall's address on your LAN is 192.168.1.100. • Your company's network is 134.177.0.0. When you first configured your firewall, two implicit static routes were created. A default route was created with your ISP as the gateway, and a second static route was created to your local network for all 192.168.1.x addresses. With this configuration, if you attempt to access a device on the 134.177.0.0 network, your firewall will forward your request to the ISP. The ISP forwards your request to the company where you are employed, and the request will likely be denied by the company's firewall. In this case you must define a static route, telling your firewall that 134.177.0.0 should be accessed through the ISDN firewall at 192.168.1.100. In this example: • The Destination IP Address and IP Subnet Mask fields specify that this static route applies to all 134.177.x.x addresses. • The Gateway IP Address fields specifies that all traffic for these addresses should be forwarded to the ISDN firewall at 192.168.1.100. • A Metric value of 1 will work since the ISDN firewall is on the LAN. • Private is selected only as a precautionary security measure in case RIP is activated. 5-10 January 2005 LAN Configuration

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Reference Manual for the ProSafe VPN Firewall 200 FVX538
5-10
LAN Configuration
January 2005
4.
Select Active to make this route effective.
5.
Type the Destination IP Address of the final destination.
6.
Type the IP Subnet Mask for this destination.
If the destination is a single host, type 255.255.255.255.
7.
Type the Gateway IP Address, which must be a firewall on the same LAN segment as the
firewall.
8.
Type a number between 1 and 15 as the Metric value.
This represents the number of firewalls between your network and the destination. Usually, a
setting of 2 or 3 works, but if this is a direct connection, set it to 1.
9.
Click Apply to have the static route entered into the table.
As an example of when a static route is needed, consider the following case:
•
Your primary Internet access is through a cable modem to an ISP.
•
You have an ISDN firewall on your home network for connecting to the company where you
are employed. This firewall’s address on your LAN is 192.168.1.100.
•
Your company’s network is 134.177.0.0.
When you first configured your firewall, two implicit static routes were created. A default route
was created with your ISP as the gateway, and a second static route was created to your local
network for all 192.168.1.x addresses. With this configuration, if you attempt to access a device on
the 134.177.0.0 network, your firewall will forward your request to the ISP. The ISP forwards your
request to the company where you are employed, and the request will likely be denied by the
company’s firewall.
In this case you must define a static route, telling your firewall that 134.177.0.0 should be accessed
through the ISDN firewall at 192.168.1.100.
In this example:
•
The Destination IP Address and IP Subnet Mask fields specify that this static route applies to
all 134.177.x.x addresses.
•
The Gateway IP Address fields specifies that all traffic for these addresses should be
forwarded to the ISDN firewall at 192.168.1.100.
•
A Metric value of 1 will work since the ISDN firewall is on the LAN.
•
Private is selected only as a precautionary security measure in case RIP is activated.