I noticed that I was unable to mount an NFS export from a CentOS 7 server with our OS X clients using the “Connect to Server” menu in the Finder, but it was working when using the command mount_nfs.
This issue was solved by enabling the “insecure” mode of the export, change it on /etc/exports file on the Linux server:
Using this option solved my problem. This option allows access from insecure ports, an insecure port is used when the NFS implementation of the system doesn’t use restricted ports.
I love you!!! hahah, works for me! Mac OS high Sierra 10.3