KB ID 0001772 Problem I was asked by a colleague at work the other day, can we replace the Cisco firewalls with FortiGate firewalls for a client? As a business we are heading towards Forti, but before I said yes I wanted to know what the firewall was actually doing before I said yes. On closer inspection the firewall in question didn’t appear to be doing anything too scary, but I did notice that the LAN interface was sub-interfaced to the various internal VLANs. I didn’t know how FortiGate handled this, so I fired it up on the test bench to test FortiGate Sub Interfaces. So I needed to...