I have an ASA5505 with 8.2.1 firmware version and 6.2.1 ASDM version. I cannot access the firewall using HTTPS (ASDM). When I try to access it from IE, the message "The page cannot be displayed" is returned. When I try to acccess it from Mozilla, the message "Fail on secure connection. Error code: ssl_error_no_cypher_overlap". I have already enabled the http server and created an access-list (http ip mask if). I believe that the issue is something about the certificate and already tried to generate some one, but the problem persists.