Alternative to Kerberos for NFS

From: <iio7_at_tutanota.com>
Date: Sat, 12 Nov 2022 19:07:03 UTC 
I have been struggling to get Kerberos working in a mixed environment, 
with OpenBSD, FreeBSD and a couple of Linux boxes as well. It has been
an absolute pain in the #¤%"¤#"¤". I simplicity was not in mind when this
was designed.

Anyhow, are there any alternatives for NFS authentication?

I have even been thinking about tunneling NFS through SSH.

Kind regards.