NFS

Setting Up NFS

Security

NFS by default does not require a password to connect.

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/storage_administration_guide/s1-nfs-security

In addition, if you are root you will be able to bypass all POSIX permissions on the files. Special security setups will be necessary to prevent this, which may include SSO.