NFS Services Administrator's Guide

Introduction
New Features in NFS
Chapter 1 27
For information on configuring NFSv4 for the server, see “Configuring
the NFSv4 Server Protocol Version” on page 48. For information on
configuring NFSv4 for the client, see “Configuring the NFSv4 Client
Protocol Version” on page 74.
Sharing and Unsharing Directories
In HP-UX 11i v3, NFS replaces the exportfs command with the share
command. The share command is used on the server to share directories
and files with clients. You can use the unshare command to disable the
sharing of directories with other systems.
In earlier versions of HP-UX, the exportfs command was used to export
directories and files to other systems over a network. Users and
programs accessed the exported files on remote systems as if they were
part of the local filesystem. NFS disabled the system from exporting
directories by using the -u option of the exportfs command.
For information on how to share directories with the NFS clients, see
“Sharing Directories with NFS Clients” on page 49. For information on
how to unshare directories, see “Unsharing (Removing) a Shared
Directory” on page 71.
Following are the new share features that NFS supports:
• Secure sharing of directories
Starting with HP-UX 11i v3, NFS enables you to share directories in
a secure manner. If you have configured a security mechanism on
your system, the share command enables you to specify the security
mechanism under which the filesystem is shared. For example, if you
have installed and configured the Kerberos Security product, you can
specify
krb5 as the security mechanism to be used when you share a
filesystem.
For information on how to use the share command to share
directories securely, see “Secure Sharing of Directories” on page 56.
• Sharing directories across a firewall
Starting with HP-UX 11i v3, NFS enables you to share directories
easily across a firewall. HP recommends that you share directories
across a firewall in one of the following ways: