127 lines
5.6 KiB
HTML
127 lines
5.6 KiB
HTML
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<META name="author" lang="en" content="Michiel Broek">
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<META name="copyright" lang="en" content="Copyright Michiel Broek">
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<META name="description" lang="en" content="MBSE BBS Manual - mblogin">
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<META name="keywords" lang="en" content="MBSE BBS, MBSE, BBS, manual, fido, fidonet, gateway, tosser, mail, tic, mailer">
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<TITLE>MBSE BBS Programs - mblogin - Unix login replacement for MBSE BBS.</TITLE>
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<BLOCKQUOTE>
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<!-- MBSEADVERT -->
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<DIV align=right><h5>Last update 23-May-2011</h5></DIV>
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<DIV align=center><H1>mblogin - Unix login replacement for MBSE BBS.</H1></DIV>
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<H3>Synopsis.</H3>
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<P>
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<code><strong>mblogin</strong> [-p] [-h hostname] [user]</code>
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<P> <P>
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<H3>Description.</H3>
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<P>
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<strong>mblogin</strong> replaces the standard Unix login program for MBSE BBS.
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You can use this program from <strong>mgetty</strong> for modem/ISDN access,
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or from <strong>inetd</strong> to allow telnet access.
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This program logs in the systems syslog facility because the normal login
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program does this too. It uses the file <code>/opt/mbse/etc/login.defs</code>
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for the behaviour you prefere. All options in this file are well commented. It uses
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the bbs user database to see who are allowed to login. Users can use their
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Fidonet name, Unix name or Handle. If the name is found in the userbase, the
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name is replaced with the real Unix name to do the password check and to start
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the <strong>mbsebbs</strong> program. If the user is not found in the user base,
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the user is asked if he wants to register as a new user. This behaviour can be
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turned off. If the user uses the name <strong>bbs</strong> he will start the
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<strong>mbnewusr</strong> program directly. All other users are not allowed to
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login, not even root. If you change it in the file
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<code>/opt/mbse/etc/login.defs</code> you may allow user <strong>mbse</strong>
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to login. I advice against it, you should use <strong>ssh</strong> if you want
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remote access to do maintenance.
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<P> <P>
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<H3>How to use from inetd.</H3>
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<P>
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If your system is connected to the internet you may want to let users login
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using telnet. The changes you need to make are different for each operating
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system mbse supports. The right lines for your distribution should already
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be present, but they are not set active, in other words, you still need to
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make changes to allow telnet login to work.
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First I will describe how to use it from inetd.
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When you make changes to your system to
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change the telnet login, make sure you are already logged into your system as root
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from another terminal. If you make a mistake and can't login anymore you will be
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glad that you are still logged in on another terminal. Here are the tested
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setups:
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<UL>
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<LI>GNU/Linux: edit the telnet line in /etc/inetd.conf:<BR>
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<code>telnet stream tcp nowait root /usr/sbin/tcpd in.telnetd -L /opt/mbse/bin/mblogin</code><br>
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After changing this file do a <b>kill -HUP pid</b> where pid is the pid of the
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inetd process.
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<LI>FreeBSD: edit the telnet line in /etc/inetd.conf:<BR>
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<code>telnet stream tcp nowait root /usr/libexec/telnetd telnetd -p /opt/mbse/bin/mblogin</code><br>
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After changing this file do a <b>kill -HUP pid</b> where pid is the pid of the
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inetd process.
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<LI>NetBSD: append a line in /etc/gettytab just below the line with the default
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entry:<br>
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<code>mbsebbs:cd:ck:np:lo=/opt/mbse/bin/mblogin:sp#38400:</code><br>
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The speed entry 38400 doesn't seem to be important.
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Then edit the telnet line in /etc/inetd.conf:<BR>
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<code>telnetd stream tcp nowait root /usr/libexec/telnetd telnetd -g mbsebbs</code><br>
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After changing this file do a <b>kill -HUP pid</b> where pid is the pid of the
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inetd process.
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</UL>
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Now you can test it with <code>telnet localhost</code> or from another machine
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with <code>telnet your.machine.com</code>. Check if you can still do other
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logins such as ssh, rlogin and login on local consoles.
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<P> <p>
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<H3>How to use from xinetd.</H3>
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<P>
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This is how to use xinetd, Read the section above also.
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Here is a tested setup:
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This has to be done as root. You have to create a service under /etc/xinetd.d
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named telnet if you dont have it yet installed, if it is already installed just
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modify the server_args line to match this:
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<pre>
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server_args = -L /opt/mbse/bin/mblogin
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</pre>
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Your /etc/xinetd.d/telnet file should look something like this:
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<pre>
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service telnet
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{
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protocol = tcp
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instances = 10
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flags = IPv6
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log_on_failure += USERID
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socket_type = stream
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user = root
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server = /usr/sbin/telnetd
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server_args = -L /opt/mbse/bin/mblogin
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wait = no
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}
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</pre>
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This will replace the standard login program on xinetd systems to the mblogin
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program, so that next time someone logs into your bbs they will be presented the
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issue file on /opt/mbse/etc file and the login prompt for the BBS instead of the
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standard login prompt. Note that on some systems the server_args need -E instead
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of -L. If you don't have IPv6 enabled on your system, you must remove the
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flags = IPv6 line.
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<p> <p>
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<H3>How to use from mgetty</H3>
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<P>
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This is described with the setup for <A HREF="../mgetty.html">mgetty</A>.
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<P>
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