ONC+ Release Notes

ONC+ Release Notes
What’s New in This Version of NFS
Chapter 18
— Single Protocol
The MOUNT, Network Lock Manager (NLM), and the Network Status Monitor
(NSM) protocols are merged into the NFS protocol. Merging these protocols into a
single protocol enables easy configuration of firewalls.
• Support for WebNFS
WebNFS is an extension of the NFS protocol. It enables easy access to files across the
Internet. Filesystems on the Internet can appear to a user as a local filesystem. WebNFS
works through firewalls and enables applications that run on heterogeneous operating
systems to access shared files.
• Secure NFS
Previously, network security had been handled by the applications. With Secure NFS, a
standard authentication system, security can be implemented at the Remote Procedure
Call (RPC) level. This standard authentication system is known as Secure RPC. When
NFS uses the facilities provided by Secure RPC, it is known as Secure NFS.
RPC authentication enables you to use a variety of authentication systems such as DH,
UNIX, and KERB and is not dependent on the version of NFS used.
• Client Failover
When an NFS server fails, the client that is accessing the shared files on that server can
no longer access the shared files. If client failover is enabled, the client is automatically
switched to an alternate server, which is a replica of the server that failed. The client
continues to access shared files, without being aware of the switch.
NOTE Client failover support is limited to read-only mounts.
• Enhanced NFS logging
NFS server logging enables an NFS server to provide a record of file operations that are
performed on its filesystems.