Cisco ASA EasyVPN Client behind PFSense

[chavez243ca]

Have had an ASA 5505 and more recently 5506 behind a PFSense firewall at home for some years now providing an EasyVPN connection back to another ASA providing me with a remote connection for work. In recent months this has ceased to function. I don't recall any major changes to either my home network or the corporate network. ASA has been replaced twice now, 5505 -> 5506 upgrade and then replaced the 5506 with another unit due to connectivity issues. 5506 has been confirmed to be fully functional by corp IT.

Additionally, if the ASA is connected directly to the modem, taking the PFSense out of the picture, the VPN works as expected.

Nothing evident shows up in the PFSense logs, insofar as something like UDP/500 being blocked etc.