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V-215330

CAT II (Medium)

AIX NFS server must be configured to restrict file system access to local hosts.

Rule ID

SV-215330r991589_rule

STIG

IBM AIX 7.x Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-000366

Discussion

The NFS access option limits user access to the specified level. This assists in protecting exported file systems. If access is not restricted, unauthorized hosts may be able to access the system's NFS exports.

Check Content

Check the permissions on exported NFS file systems by running command: 

# exportfs -v 
/export/shared -ro,access=10.17.76.74

If the exported file systems do not contain the "rw" or "ro" options specifying a list of hosts or networks, this is a finding.

Fix Text

Edit "/etc/exports" and add "ro" and/or "rw" options (as appropriate) specifying a list of hosts or networks which are permitted access. 

Re-export the file systems:
# /usr/sbin/exportfs -a