Exporting an NFSv4 Volume with ACLs

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Exporting an NFSv4 Volume with ACLs

A lot of the key enhancements to NFSv4 are related to security. Understanding how to implement these features is important for several advanced certifications. In this hands-on lab, we will review basic NFS concepts and explore NSF ACLs.

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Lab Info

Level

Advanced

Last updated

Sep 09, 2025

Duration

1h 0m

Challenge

Configure a new NFS export for `/nfs` that is exported to all hosts with read and write access, `root squash` disabled, and `acl` enabled.
1. Edit /etc/exports to contain the following line:
  
  /nfs/ *(rw,acl,no_root_squash)
- Run systemctl restart nfs-server.
Challenge

Mount `localhost:/nfs` to `/mnt` on the local system.

Run mount -t nfs localhost:/nfs /mnt.
Challenge

Create an ACL on `/mnt/nfstestfile` that grants the user `alice` read and write permission.

Run nfs4_setfacl -a A::alice@localdomain:RW /mnt/file.
Challenge

Create an ACL on `/mnt/nfstestfile` that grants the user `bob` read and execute permission.

Run nfs4_setfacl -a A::bob@localdomain:RX /mnt/file.
Challenge

Create an ACL on `/mnt/nfstestfile` that grants the user `everyone` read permission.

Run nfs4_setfacl -a A::EVERYONE@:R /mnt/nfstestfile.

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