Understanding share access permissions

An NFS server can specify, for each filesystem shared, which client hosts or netgroups may mount that filesystem and whether each specified client has read-write or read-only permission when accessing that filesystem:

• ``Read-write'' means users on the client machine may write to the filesystem.

• ``Read-only'' means users on the client machine may not write to the filesystem.

Read-write and read-only permissions are usually granted in combinations; for example, a calendar server may be viewed by many read-only clients, but only a few read-write clients have schedule permissions. The Filesystem Manager allows you to specify permissions to All systems, Selected systems, or None in these combinations:

Read-only	Read-Write
none	all
selected	none
all	none
all	selected

When a specific client host is granted permissions, you can also grant ``root-access'' for that host. This means root users on specified client systems retain their root privileges when accessing the remote filesystem, while root users on other systems do not. To grant client permissions, see ``Adding or modifying share configuration''.