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<TITLE>The Answer Guy 50: Remote Control through Telnet</TITLE>
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<H4>"The Linux Gazette...<I>making Linux just a little more fun!</I>"</H4>
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<H1><A NAME="answer">
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<font color="#B03060">The Answer Guy</font>
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<BR>
<H4>By James T. Dennis,
<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
LinuxCare,
<A HREF="http://www.linuxcare.com/">http://www.linuxcare.com/</A>
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<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
height="50" width="60" alt="(?) " border="0"
>Remote Control through Telnet</H3>
<p><strong>From Dirk Blennemann on Tue, 11 Jan 2000
</strong></p>
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Remote Control through Telnet
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<P><STRONG>
Dear James,
</STRONG></P>
<P><STRONG>
I noticed your address on the <A HREF="http://www.linuxcare.com/">Linuxcare</A> pages and understood that
your are a Linux expert.
</STRONG></P>
<P><STRONG>
I like to control a Linux server via Telnet. Do you have an idea
where I may find information about that subject?
</STRONG></P>
<P><STRONG>
Thank you very much in advance!
</STRONG></P>
<P><STRONG>
Dirk
<br>[Germany]
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
Any book on Unix will tell you how to access text
mode and shell applications and utilities. Linux and
UNIX basically don't distinguish among text console,
serial terminal, telnet, and other forms of terminal
access.
</BLOCKQUOTE>
<BLOCKQUOTE>
There's not much else to say on that subject.
I recommend the use of <tt>ssh</tt>, SSL telnet or other secure
variants of the client/server package to protect you
from sniffing (which is a big problem for traditional
<tt>telnet</tt>) and spoofing (which is the bane of
<tt>rsh</tt> and <tt>rlogin</tt>).
</BLOCKQUOTE>
<BLOCKQUOTE>
It is also possible to remotely execute graphical
applications. You run any X server on a system at
hand (in front of you), and you can run X Windows
programs on other hosts (clients) by exporting the
DISPLAY environment variable on the remote shell.
</BLOCKQUOTE>
<p><em>[ As long as the client running the app can remotely access
the I/O server on port 6000 or so. -- Heather ]</em></p>
<BLOCKQUOTE>
<tt>ssh</tt> will allow this very easily and securely. It
can automatically export the appropriate variable/value
to your remote host and will encrypt all the X lib
protocol traffic through its own tunnel.
</BLOCKQUOTE>
<BLOCKQUOTE>
This is a rather big topic, but any books on Linux
and UNIX should cover it in great detail.
</BLOCKQUOTE>
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<P> <hr> <P>
<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
>Copyright &copy;</a> 2000, James T. Dennis
<BR>Published in <I>The Linux Gazette</I> Issue 50 February 2000</H5>
<H6 ALIGN="center">HTML transformation by
<A HREF="mailto:star@starshine.org">Heather Stern</a> of
Starshine Technical Services,
<A HREF="http://www.starshine.org/">http://www.starshine.org/</A>
</H6>
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