Open System Services NFS Overview

Figure 3 OSS NFS Example
The system manager uses the following SCF commands to create the servers and perform the local
mounts:
ADD SERVER ROOT, MNTPOINT "/", ...
ADD SERVER SD1, MNTPOINT "/usr", ...
ADD SERVER SD2, MNTPOINT "/usr/lib", ...
START SERVER SD0
START SERVER SD1
START SERVER SD2
The ADD SERVER command creates the servers. The START SERVER command is comparable to a
UNIX mount command; it performs the local mount of the subtree managed by the server.
After the system manager performs the local mounts, you can perform a remote mount from your
NFS client of a directory in the OSS NFS structure. You must pass any security restrictions placed
on the directories and files you want to access. (See “Security Mechanisms” (page 15), for detailed
information about securing files.)
You can access only the subtrees of the directory you mount and only those subtrees managed by
the server that responded to your request. For example, if you perform a remote mount of the root
directory (in Figure 2 (page 12)), you cannot access /usr/lib files, because they are managed
by a different server.
User Authentication Using PCNFSD
There are fundamental differences between the way servers (for example, UNIX servers) and
stand-alone clients (for example, PCs and workstations) handle security. To use NFS services while
User Authentication Using PCNFSD 13