I have a new ASA5505 firewall, it's outside interface is 192.168.255.1. In front of it, there is a Cisco router, the outside interface is 220.x.x.x. and internal interface is 192.168.255.254. Now I have configured the VPN for client remote access on 5505, and I set a NAT on the router to map one of my spared public address 220.x.x.24 to 192.168.255.1. However, I received an error message "The remote peer is no longer responding" when I try to connect with the VPN client.
Could someone assist and let me know what did I miss?