On 5/1/23 08:37, Per Jessen wrote:

Using NFS across a firewall is not typically done.  Clients and servers
are all expected to be on a trusted network.  It is possible NFSv4 has
made changes in this respect, I haven't looked.

We use NFS with the host-based firewalls running, both SuSEfirewall2
and firewalld.

I run both nfs server and clients in all my computers in my LAN, and I
do want to keep all my machines with an active firewall. This is
pretty normal.

I disagree.  If the network is trusted, what is the point of a firewall?

It's good security practice, we've been doing it for decades. Indeed,
that we could do that was once justification to not use Windows! It
protects well-behaved Linux boxes from those rude and insecure
Windows cesspools on the same subnet.

Regards,
Lew