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Read Only-
Limits users from writing new data or changing existing data
Secure-
Requires requests to be made on internet ports less than
IPPORT_RESERVED (1024). To turn off this feature, check “Insecure Locks.” This
must be disabled for access on Macintosh.
Async-
This option allows NFS server to violate NFS protocol and reply to
requests before the disk commits said request. This option usually is correlated
with an increase in performance but can also cost data lost in the event of a hard
server crash.
No ACL-
On systems that do support ACLs, this option tells nfsd not to reveal
ACLs to clients. Note: No ACL option only has an effect when the system is
patched to support ACLs. Safe for use by NFSv2 and NFSv3 clients.
Subtree check-
this option enables or disables subtree checking. Although there
are some security implications involved, reliability can improve in certain cases.
This refers to the extra step that the server must take to check not only the
accessed file, but also the exported tree.
Insecure Locks-
This option tells the NFS Server to not require authentication of
locking requests. No access checks will be performed if this option is selected.
Root Squash-
Maps requests between the UID/GID 0 and the anonymous
UID/GID.
All Squash
- Maps everything between UID/GID 0 and anonymous user.
Anonuid and Anongid-
Explicitly set the uid and gid of anonymous user. Usually
this feature is used if one wants all users accessing to seem like 1 user.
