Remote Logins
If you run a small network that hosts several OSs, you might find it convenient to use some small feature of one OS when you're physically seated at another. If your remote OS supports network logins, you might be able to satisfy this desire. All UNIX-style OSs can be used in this way, as can BeOS and, to a more limited extent, OS/2. You can even find appropriate third-party login servers for Windows NT.
Logging In to a Multiuser OS
Just as with FTP, remote logins require a special server program. The protocol that is most frequently used for this function is known as Telnet. Like FTP, however, Telnet is an inherently insecure protocol; it is possible for an unwanted party to snoop at various points on an Internet link to acquire ...
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