I need opinions on how to connect our Cisco ASA5545 firewall to the internet router. In the past we would create a vlan for outside traffic, say vlan 200. This VLAN would have 2 ports configured on a switch, one for the outside interface of the firewall and one for the internet routers inside interface.
Is this the recommended way of doing it or can I simple run the cable from the internet router directly to the outside interface on the Firewall? Thanks
You can directly connect the ASA to the router. But there are some options you could consider:
That would be needed only if you want to use the same switch you are currently using for other segments, and you want to isolate the ASA outside interface traffic in a dedicated VLAN on the same switch. If not, you can just connect the ASA to the ISP router directly.