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184 lines
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<TITLE>The Answer Guy 54: Can't Telnet: Another possibility</TITLE>
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<H1><A NAME="answer">
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<font color="#B03060">The Answer Guy</font>
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<H4>By James T. Dennis,
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<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
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LinuxCare,
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<A HREF="http://www.linuxcare.com/">http://www.linuxcare.com/</A>
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<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
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height="50" width="60" alt="(?) " border="0"
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>Can't Telnet: Another possibility</H3>
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<p><strong>From Walter Ribeiro de Oliveira Jr. on Tue, 02 May 2000
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</strong></p>
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<!-- ::
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Can't Telnet: Another possibility
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:: -->
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<P><STRONG>
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I read a question about not being able to use telnet to connect to a
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linux box... you complained about very few information, I agree with
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you, but I have a suggestion: isn't the problem about trying to make a
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telnet as the root user, and in the file <TT>/etc/securetty</TT> the remote
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terminals not permiting so ?
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I mean, for make a telnet as the root user, you need to edit
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<TT>/etc/securetty</TT> to allow it...
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Hugs, see ya
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</STRONG></P>
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<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
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HEIGHT="28" WIDTH="50" BORDER="0"
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>
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Of course that is a different possibility. However,
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editing <TT>/etc/securetty</TT> is a very bad way to do this. You'd
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have to add all of the possible psuedo-tty device nodes
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to that list <TT>---</TT> which would be long and pretty silly.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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If one really insists on thwarting the system policy of
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prevent direct root logins via telnet, then it's best to
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do so by editing the <TT>/etc/pam.d/login</TT> configuration
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file to comment out the "requisite pam_securetty.so"
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directive:
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</BLOCKQUOTE>
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<blockquote><pre># Disallows root logins except on tty's listed in /etc/securetty
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# (Replaces the `CONSOLE' setting from login.defs)
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auth requisite pam_securetty.so
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</pre></blockquote>
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<BLOCKQUOTE>
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... assuming that you are using a PAM based authentication
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suite <TT>--</TT> as most new Linux distributions do. As noted in
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the excerpted comments from my <TT>.../pam.d/login</TT> file (as
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installed by <A HREF="http://www.debian.org/">Debian</A>/Potato) there is an applicable setting in
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<TT>/etc/login.defs</TT> if you're using JF Haugh's old shadow suite
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without PAM.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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Better Answer: use 'ssh'!
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</BLOCKQUOTE>
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<P> <hr> </p>
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<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
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>Copyright ©</a> 2000, James T. Dennis
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<BR>Published in <I>The Linux Gazette</I> Issue 54 June 2000</H5>
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<H6 ALIGN="center">HTML transformation by
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<A HREF="mailto:star@tuxtops.com">Heather Stern</a> of
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Tuxtops, Inc.,
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