rlogind(1M)                                              rlogind(1M)


       NAME
             rlogind - remote login server

       SYNOPSIS
             in.rlogind

       DESCRIPTION
             The rlogind command is the server for the rlogin(1) program.
             The server provides a remote login facility with
             authentication based on privileged port numbers.

          Diagnostics
             All diagnostic messages are returned on the connection
             associated with the stderr, after which any network
             connections are closed.  An error is indicated by a leading
             byte with a value of 1.

             Hostname for your address unknown.
                   No entry in the host name database existed for the
                   client's machine.

             Try again.
                   A fork by the server failed.

             /usr/bin/sh: ...
                   The user's login shell could not be started.

       USAGE
             rlogind is invoked by inetd(1M) when a remote login connection
             is established, and executes the following protocol:

               1.  The server checks the remote client's source port.  If
                   the port is not in the range 0-1023, the server aborts
                   the connection.

               2.  The server checks the remote client's source address.
                   If an entry for the client exists in both /etc/hosts and
                   /etc/hosts.equiv or ~/.rhosts, a user logging in from
                   the client is not prompted for a password.  If the
                   address is associated with a host for which no
                   corresponding entry exists in /etc/hosts, the user is
                   prompted for a password, regardless of whether or not an
                   entry for the remote client is present in
                   /etc/hosts.equiv or ~/.rhosts [see hosts(4),
                   hosts.equiv(4) and rhosts(4)].



                           Copyright 1994 Novell, Inc.               Page 1

      rlogind(1M)                                              rlogind(1M)


            Once the source port and address have been checked, rlogind
            allocates a pseudo-terminal and manipulates file descriptors
            so that the slave half of the pseudo-terminal becomes the
            stdin, stdout, and stderr for a login process.

            The login process is an instance of the in.login scheme, which
            is based on login(1).  The login process is invoked with the
            -R option to indicate that it is originated by rlogind.  The
            login process proceeds with the authentication process as
            described in rshd(1M), but if automatic authentication fails,
            it reprompts the user to login as one finds on a standard
            terminal line.

            rlogind manipulates the master side of the pseudo-terminal,
            operating as an intermediary between the login process and the
            remote client's rlogin command.  In normal operation, a packet
            protocol is invoked to provide Ctrl-S / Ctrl-Q type facilities
            and propagate interrupt signals to the remote commands.  The
            login process propagates the client terminal's baud rate and
            terminal type, as found in the environment variable, TERM; see
            environ(5).

      REFERENCES
            inetd(1M), hosts(4), hosts.equiv(4)

      NOTICES
            The authentication procedure used here assumes the integrity
            of each client machine and the connecting medium.  This is
            insecure, but is useful in an ``open'' environment.

            A facility to allow all data exchanges to be encrypted should
            be present.
















                          Copyright 1994 Novell, Inc.               Page 2