telnetlogin man page on Ubuntu

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TELNETLOGIN(8)		  BSD System Manager's Manual		TELNETLOGIN(8)

NAME
     telnetlogin — login wrapper for telnetd

SYNOPSIS
     telnetlogin [-h host] [-p] [username]

DESCRIPTION
     telnetlogin is a setuid wrapper that runs login(1).  It is meant to be
     invoked by telnetd(8); the idea is to remove the necessity of running
     telnetd as root.

     telnetlogin should be installed mode 4750, user root, group telnetd.
     Then, telnetd may be run from /etc/inetd.conf as user ``nobody'', group
     ``telnetd'', and with the option -L path-to-telnetlogin.

     telnetlogin accepts only the subset of options to login(1) shown above,
     in the order listed. This is the order telnetd 8 normally provides them
     in.  telnetlogin also does sanity checks on the environment variables
     TERM, and REMOTEHOST.  It also insists that the standard input, output,
     and error streams are open on a terminal, and that it is the process
     group leader of the foreground process of that terminal. After checking
     all of these conditions, checking the values of the above environment
     variables for reasonable values, resetting signal handlers, and so forth,
     it execs login.

SEE ALSO
     login(1), inetd.conf(5), inetd(8), telnetd(8)

RESTRICTIONS
     telnetlogin does not permit the -f option to login, so will not work with
     telnetds that perform authentication via Kerberos or SSL.

     THIS IS PRESENTLY EXPERIMENTAL CODE; USE WITH CAUTION.

HISTORY
     telnetlogin was written during the development of NetKit 0.17.

Linux NetKit (0.17)		April 12, 2000		   Linux NetKit (0.17)
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