When you define your internal networks, you specify which computers are part of your network and which computers belong to the world outside. This specification lets Symantec Web Gateway correctly identify computers with malware infections, versus potential attacks from outside the network.
To specify internal networks
In the Web GUI, click Administration > Configuration > Network.
Check Apply Static Routes to Internal Networks if the following conditions apply, and then click Save and ignore the rest of this procedure:
You have configured static routes.
Your internal networks are the same as or more than the static routes.
Under Internal Network Configuration, click Add a Network.
Normally, do not check Define internal network as addresses not in the following list. That setting is for special cases of when you install Symantec Web Gateway in front of an external proxy.
In Subnet, type the IP address of your internal subnet.
For example, if your internal computers are in the range 10.42.24.0 to 10.42.24.255, type 10.42.24.0.
In Netmask, type the netmask for the subnet.
For example, if your internal computers are in the range 10.42.24.0 to 10.42.24.255, type 255.255.255.0.
Symantec Web Gateway supports the wide subnets also known as supernets. If portions of your network are in a contiguous wide range, it is not necessary to have multiple separate internal network entries for each range. A single wide range is sufficient.
Optionally, in Description, type a description of the internal network.
If your internal network has computers in separate network ranges, specify additional networks.
Imported Document ID: HOWTO54097
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