Now, with the network shell, this barrier has been smashed. From the network shell, navigation over the network from host to host as if the network is your computer is possible, regardless of the operating system. Copying, comparing, editing, viewing, or using any number of other commands to access and manipulate files across the network is simple with the network shell. With the Network Shell, access is available to the whole computer, not just individual disk partitions or directories. NFS is great, but usually only user data is shared.
Administration requires access to the whole computer.
NFS is usually used to share data with end users. Using the Network Shell provides access to the whole computer regardless of disk partitioning. Please see the section on Security which outlines security issues. SSH in a nutshell is an encryption and authentication engine. It is often used to encrypt a telnet session to a remote host.