← Back to SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

V-933

CAT II (Medium)

The Network File System (NFS) server must be configured to restrict file system access to local hosts.

Rule ID

SV-46124r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

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 if the nfs-kernel-server package is installed.  It contains the exportfs command as well as the nfsserver process itself.
# rpm –q nfs-kernel-server

If the package is not installed, this check does not apply.  If it is installed, check the permissions on exported NFS file systems.

Procedure:
# exportfs -v

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.