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architrave
architrave
New Member
October 17, 2016
Question

FIREWALL on switch type connection (or similar)

  • October 17, 2016
  • 1 reply
  • 4979 views

Hi all,

 I need to know if it is possible to configure firewall in the scenario attached. My scope it is to connect the router LAN and firewall WAN and LAN on the same sub net as shown below in the screenshot.

 

Let me know which solution of if this is not possible.

Thanks in advance

 

Archi

 

1 reply

Nils
Nils
New Member
October 17, 2016

Hi,

Thats not possible, you cannot have the sam subnet on two different L3 interfaces.

You can achieve a similay setup if you choose to run the Fortigate in Transparent Mode.

Then you can "bridge" the inside of the router network through the Fortigate and apply a rule-set to this traffic.

But then the Fortigate will not have any Ip-addresses on these interfaces.

Nils
Nils
New Member
October 17, 2016

Otherwise you can create another subnet on the inside-side of the fortigate, ex 192.168.10.0/24.

 

 

architrave
architraveAuthor
New Member
October 17, 2016

Yes, as I understood....

 sorry for the stupid question but sometime is better to ask a question ... just to try all possible ideas!

 

Best Regards

Archi

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