For some features, like remote-access VPN, I actually prefer working with the ASA operating system rather than Cisco’s newer Firepower operating system, or FTD for short. Cisco still supports the (now) older ASA operating system, which is still running strong even on Cisco’s latest firewall hardware.
Installing the management software ASDM for Cisco ASA firewalls on a modern computer is very often a big hassle and it rarely works as intended on the first try in many cases.
