Hewlett-Packard NetStorage 6000 Manual
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Copyright © 2000 Hewlett-Packard Company Page 7 of 28
All Rights Reserved
The administrator may declare Trusted Hosts using the web based administration tool, or the telnet administration
tool of the HP NetStorage 6000.
2.4.2 The /etc Directory
It is necessary to maintain a number of system files on the HP NetStorage 6000 in an accessible place for
administrative purposes. Some of the more common files found in this directory are as follows:
hosts Host name resolution
group Define local group accounts
passwd Define local user accounts
hostgrps Define groups of host computers
approve Restrict host access
These files are all stored in the /etc directory on the first volume created on the system. The files in the /etc
directory are for system management purposes and cannot be deleted. If the volume that stores the /etc
directory is ever deleted, then the system moves the contents of this directory to another available volume.
Of the files listed above, the hosts file, the group file and the passwd file may be edited through the web based
user interface, or the telnet interface of the HP NetStorage 6000. In some cases, it is necessary to edit these
files directly using a text editor. By default, all files in the /etc directory belong to the root user, and may only be
edited by the root user. Therefore, the only way to edit these files directly (using a text editor) is to mount the file
system as the root user from a Trusted Host (discussed in the previous section).
Important Note: The HP NetStorage 6000 does NOT authenticate UNIX accounts and thus does not use the
passwd file, the group file, or the equivalent security files from NIS for authentication or account name resolution.
The only reason to store and maintain these files is to map UNIX users to NT users. If the NAS device is not used
for NT access, or if the storage for NT users and the storage for UNIX users are kept separate, then there is no
need to maintain these files.
2.4.3 The /etc/approve File
Since the HP NetStorage 6000 does not support the /etc/exports file, support has been added for a file named
/etc/approve. This file can be used to restrict NFS access to particular clients on the network.
Currently, the administrator has a limited ability to indirectly edit the /etc/approve file using the web based
administration tool. Each volume on the server allows general UNIX access settings of No Access, Read Only or
Read/Write. These settings apply to all clients accessing any resource on the volume.
In order to restrict individual clients and groups of clients to specific resources on the HP NetStorage 6000, the
/etc/approve file must be edited manually. Entries in the /etc/approve file have four fields. These fields are
defined as follows:
class This field specifies the class of object to protect. In all cases, the object is ‘files’.
specifier This field specifies the resources on the HP NetStorage 6000 to protect. For example,
‘/engineering’, applies to all files and directories in the /engineering file system.