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Not needing authentication at time of connection does enable boot time mounting for some interesting setups but, how is security managed?

- WorkA with username:username is the client system.
- ServB with username:"users" is the NFS server with share "shared".

Group "users" does not exist on WorkA however all users on ServB are members of a common "users" group. The share "shared" gives group "users" read/write access.

How is the NFS share going to write files as username:"users" or what default user:group will it use locally for remote client connections?