Description
This article offers troubleshooting steps for an issue that occurs when FortiGate is configured to NAT Mode and it is changed to transparent mode. The configuration shows the following error:
'value conflicts with system settings'.
Scope
FortiGate 200D when changing NAT Mode to Transparent Mode.
Solution
In order to transform the FortiGate from NAT mode to transparent mode, it is necessary to erase the switch-interface configured by default in the FortiGate:
The following commands must be run:
config system switch-interface
show
config system switch-interface
edit "Switch"
set member "Interface1" "Interface2"
next
end
delete Switch
end
The GUI also makes it possible to change the FortiGate to transparent mode.
To switch to transparent mode in the web-based manager:
- Go to System -> Status.
- Under System Information, select Change beside the Operation Mode.
- Select Transparent.
- Enter the Management IP/Netmask address and the Default Gateway address.
- The default gateway IP address is required to tell the FortiGate unit where to send
network traffic to other networks.
- Select Apply.
