How do you configure an ASA Firewall?

You can configure an ASA Firewall by going into the ASDM and selecting the Configuration tab. From there, you will need to select the Firewall tab and then choose the Add button. You will then be able to select the type of firewall you want to configure, such as an access control list or a zone-based firewall.

OR

You can connect firewall using putty and login