USRobotics NETServer/8 - Manual (Page 48)

4-6 IP Terminal Server Setup
Port Default - Login Service
The NETServer uses the service specified here to connect users
not in the user table with the port default host. Users with user
table entries will not use this setting This setting is never used
when Security is set to On. Note that the remote terminal or
workstation does not need to know how to use this service since
it talks directly to the NETServer, not the host. Use the following
command:
set s<port #> service_login <login service> <TCP port#>
<TCP port#> is the port number on the host you want to connect
to. It is optional unless you choose Netdata as the login service.
<login service> is one of the following:
Telnet Supported by most TCP/IP computers, Telnet lets
the user log in to hosts that support it. If you set a
terminal type (see Term Type below), Telnet will pass
that information along. Otherwise, it negotiates a
standard, Network Virtual Terminal interface.
Rlogin Although Rlogin was originally a (BSD) UNIX only
protocol, it is now supported by some non-UNIX
machines as well. Unlike Telnet, Rlogin allows a
user logged into a host, to access their accounts on
other (trusted) hosts without reentering a password.
Rlogin requires that you specify a terminal type.
See Term Type below.
PortMux (Default) PortMux is similar to Telnet except that it
multiplexes many Telnet sessions into a single data
stream that’s more efficient to transmit and requires
fewer connections. PortMux requires that the host
be running a special PortMux daemon (in.pmd).
Note that this daemon also allows the host to use
NETServer ports set to Host Device as pseudo TTYs
(See Chapter 7). The PortMux daemon is available
on the U.S. Robotics web site.
Netdata Unlike Telnet, Rlogin and PortMux, Netdata is not
actually a login service. Netdata is a direct (clear
TCP) connection to a given TCP port number. 8-bit
data is exchanged without interpretation. Such
connections may be used by dial in applications that
require a socket interface.