In a Web browser, navigate to: https://[your firewall management IP address] (You might receive a number of security certificate warnings. Accepting the certs and and saving them as Trusted avoids warnings in the future).
Depending on which Cisco ASDM version you have, several options might display. If so, click Run ASDM Applet.
When prompted, type your server User name and firewall password. Click OK. You will be prompted to login twice.
Your browser must have Java enabled and allow pop-ups from your firewall management IP.
In the Device Manager toolbar, click Configuration.