Cisco Secure Firewall ASA Virtual Getting Started Guide, 9.16
To run a Cisco ASA on VMware Workstation, you must obtain the image. This is typically distributed in the OVA (Open Virtualization Archive) format. cisco asa firewall image for vmware workstation
Name your new virtual machine (e.g., "Lab-ASA-01") and choose a storage path. Cisco Secure Firewall ASA Virtual Getting Started Guide, 9