Message: "Failure: WAN Subnet Conflicts with LAN Subnet"

Article:TECH83591  |  Created: 2005-01-02  |  Updated: 2007-01-29  |  Article URL http://www.symantec.com/docs/TECH83591
Article Type
Technical Solution

Issue



After you configure the LAN or WAN interface of your Symantec Gateway Security 300 Series or 400 Series appliance and save the changes, you see the following error message:

"Failure: WAN Subnet Conflicts with LAN Subnet."


Solution



This error message indicates that the IP addresses that you assigned to the WAN and LAN interfaces are part of the same subnet. For example, the WAN IP address of your appliance is 192.168.0.2 and the LAN IP address is 192.169.0.1. Because both addresses are part of the same subnet, traffic cannot pass through the firewall properly.

This problem often occurs if the appliance is installed behind a NAT device.

To resolve this problem, make sure that the LAN and WAN interfaces are connected to different subnets.





Legacy ID



2005080216021754


Article URL http://www.symantec.com/docs/TECH83591


Terms of use for this information are found in Legal Notices