As per the diagram attached of our network, I need to add the new CISCO ASA 5512x firewall into the network and transfer firewall and VPN roles from the current CISCO 1941 router into the firewall without any working hour downtime. i was thinking to put firewall behind the router and assign Public IP address to start migrating all remote sites VPN to firewall.
How do i assign public IP address to firewall?
how does firewall and packet inspection is going to work as all the traffic need to go through firewall and router.
I was thinking to assign Public ip address to router subinterface and forward the traffic for that IP address to firewall for VPN, but don't know how firewall and packet inspection is going to work?