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portslave(8) [debian man page]

portslave(8)							     Portslave							      portslave(8)

portslave - terminal server program. SYNOPSIS
portslave [+config-file] port|- DESCRIPTION
This manual page documents briefly the portslave, program. This program is a getty replacement that will run it's own version of pppd, the user can specify their user-name via a login: prompt or PPP PAP negotiation. After the username and password have been supplied the user will be authenticated by the RADIUS protocol. OPTIONS
An optional first parameter is '+config-file' to specify an alternate config file. The default is /etc/portslave/pslave.conf . The next parameter is either the port number or '-'. The value '-' means that portslave is to use it's controlling tty as the serial device and inspect the config file to find the RADIUS port number which matches that. This was originally written for telnetd support (telnetd puts a '-' as the first command line parameter) but can be used for other things. To run over the telnet protocol put a config entry similar to the following in your inetd configuration: telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.telnetd -L /usr/sbin/portslave Then in the pslave.conf file put a series of entries specifying every pseudo-tty device (either ptyp0, ptyp1, etc or pts/1, pts/2 etc depending on which type of device naming you use). For the RADIUS port numbers which are to be used for telnet connections you must spec- ify the initchat as an empty string. If you want to run portslave over a clean TCP connection (no telnet protocol) then put the following in your inetd configuration: telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/portslave - AUTHOR
This man page was written by Russell Coker <>. May be freely used and distributed without restriction. SEE ALSO
pslave.conf(5), pppd(8), ctlportslave(1) Russell Coker <;> 2010.03.30 portslave(8)

Check Out this Related Man Page

TELNETD(8)						      System Manager's Manual							TELNETD(8)

telnetd - DARPA TELNET protocol server SYNOPSIS
/usr/libexec/telnetd DESCRIPTION
Telnetd is a server which supports the DARPA standard TELNET virtual terminal protocol. Telnetd is invoked by the internet server (see inetd(8)), normally for requests to connect to the TELNET port as indicated by the /etc/services file (see services(5)). Telnetd operates by allocating a pseudo-terminal device (see pty(4)) for a client, then creating a login process which has the slave side of the pseudo-terminal as stdin, stdout, and stderr. Telnetd manipulates the master side of the pseudo-terminal, implementing the TELNET protocol and passing characters between the remote client and the login process. When a TELNET session is started up, telnetd sends TELNET options to the client side indicating a willingness to do remote echo of charac- ters, to suppress go ahead, and to receive terminal type information from the remote client. If the remote client is willing, the remote terminal type is propagated in the environment of the created login process. The pseudo-terminal allocated to the client is configured to operate in "cooked" mode, and with XTABS and CRMOD enabled (see tty(4)). Telnetd is willing to do: echo, binary, suppress go ahead, and timing mark. Telnetd is willing to have the remote client do: binary, ter- minal type, and suppress go ahead. SEE ALSO
telnet(1C) BUGS
Some TELNET commands are only partially implemented. The TELNET protocol allows for the exchange of the number of lines and columns on the user's terminal, but telnetd doesn't make use of them. Because of bugs in the original 4.2 BSD telnet(1C), telnetd performs some dubious protocol exchanges to try to discover if the remote client is, in fact, a 4.2 BSD telnet(1C). Binary mode has no common interpretation except between similar operating systems (Unix in this case). The terminal type name received from the remote client is converted to lower case. The packet interface to the pseudo-terminal (see pty(4)) should be used for more intelligent flushing of input and output queues. Telnetd never sends TELNET go ahead commands. 4.2 Berkeley Distribution November 16, 1996 TELNETD(8)

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