I have an old Cisco 3005 VPN concentrator that I am trying to reconfigure. After upgrading it to vpn3005-4.7.2.P-k9.bin, which is the last version, I logged in and change the IP addresses on the public and private interfaces. In order to continue, I change the URL in the browser to the new IP. Once I do that, I cannot login. The page comes up asking for user name and password and typing in the password that I used before the IP change was made does not work. Any ideas/suggestions ?