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+<th colspan="3" align="center">Slackware Linux Essentials</th>
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+<td width="10%" align="left" valign="bottom"><a href="basic-network-commands-finger.html"
+accesskey="P">Prev</a></td>
+<td width="80%" align="center" valign="bottom">Chapter 13 Basic Network Commands</td>
+<td width="10%" align="right" valign="bottom"><a href="basic-network-commands-ssh.html"
+accesskey="N">Next</a></td>
+</tr>
+</table>
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+<hr align="LEFT" width="100%" />
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+
+<div class="SECT1">
+<h1 class="SECT1"><a id="BASIC-NETWORK-COMMANDS-TELNET"
+name="BASIC-NETWORK-COMMANDS-TELNET">13.5 <tt class="COMMAND">telnet</tt></a></h1>
+
+<p>Someone once stated that <tt class="COMMAND">telnet</tt>(1) was the coolest thing he
+had ever seen on computers. The ability to remotely log in and do stuff on another
+computer is what separates Unix and Unix-like operating systems from other operating
+systems.</p>
+
+<p><tt class="COMMAND">telnet</tt> allows you to log in to a computer, just as if you
+were sitting at the terminal. Once your username and password are verified, you are given
+a shell prompt. From here, you can do anything requiring a text console. Compose email,
+read newsgroups, move files around, and so on. If you are running X and you <tt
+class="COMMAND">telnet</tt> to another machine, you can run X programs on the remote
+computer and display them on yours.</p>
+
+<p>To login to a remote machine, use this syntax:</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">telnet &lt;<var
+class="REPLACEABLE">hostname</var>&gt;</kbd>
+</pre>
+</td>
+</tr>
+</table>
+
+<p>If the host responds, you will receive a login prompt. Give it your username and
+password. That's it. You are now at a shell. To quit your telnet session, use either the
+<tt class="COMMAND">exit</tt> command or the <tt class="COMMAND">logout</tt> command.</p>
+
+<div class="WARNING">
+<table class="WARNING" width="100%" border="0">
+<tr>
+<td width="25" align="CENTER" valign="TOP"><img src="./imagelib/admon/warning.png"
+hspace="5" alt="Warning" /></td>
+<td align="LEFT" valign="TOP">
+<p><tt class="COMMAND">telnet</tt> does not encrypt the information it sends. Everything
+is sent in plain text, even passwords. It is not advisable to use <tt
+class="COMMAND">telnet</tt> over the Internet. Instead, consider the <tt
+class="COMMAND">Secure Shell</tt>. It encrypts all traffic and is available for free.</p>
+</td>
+</tr>
+</table>
+</div>
+
+<div class="SECT2">
+<h2 class="SECT2"><a id="AEN4593" name="AEN4593">13.5.1 The other use of telnet</a></h2>
+
+<p>Now that we have convinced you not to use the telnet protocol anymore to log into a
+remote machine, we'll show you a couple of useful ways to use <tt
+class="COMMAND">telnet</tt>.</p>
+
+<p>You can also use the <tt class="COMMAND">telnet</tt> command to connect to a host on a
+certain port.</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">telnet &lt;<var
+class="REPLACEABLE">hostname</var>&gt; [port]</kbd>
+</pre>
+</td>
+</tr>
+</table>
+
+<p>This can be quite handy when you quickly need to test a certain service, and you need
+full control over the commands, and you need to see what exactly is going on. You can
+interactively test or use an SMTP server, a POP3 server, an HTTP server, etc. this
+way.</p>
+
+<p>In the next figure you'll see how you can <tt class="COMMAND">telnet</tt> to a HTTP
+server on port 80, and get some basic information from it.</p>
+
+<div class="FIGURE"><a id="FIG-BASIC-NETWORK-COMMANDS-TELNET-WEB"
+name="FIG-BASIC-NETWORK-COMMANDS-TELNET-WEB"></a>
+<p><b>Figure 13-1. Telnetting to a webserver</b></p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">telnet store.slackware.com 80</kbd>
+Trying 69.50.233.153...
+Connected to store.slackware.com.
+Escape character is '^]'.
+HEAD / HTTP/1.0
+
+HTTP/1.1 200 OK
+Date: Mon, 25 Apr 2005 20:47:01 GMT
+Server: Apache/1.3.33 (Unix) mod_ssl/2.8.22 OpenSSL/0.9.7d
+Last-Modified: Fri, 18 Apr 2003 10:58:54 GMT
+ETag: "193424-c0-3e9fda6e"
+Accept-Ranges: bytes
+Content-Length: 192
+Connection: close
+Content-Type: text/html
+
+Connection closed by foreign host.
+<samp class="PROMPT">%</samp>
+</pre>
+</td>
+</tr>
+</table>
+</div>
+
+<p>You can do the same for other plain-text protocols, as long as you know what port to
+connect to, and what the commands are.</p>
+</div>
+</div>
+
+<div class="NAVFOOTER">
+<hr align="LEFT" width="100%" />
+<table summary="Footer navigation table" width="100%" border="0" cellpadding="0"
+cellspacing="0">
+<tr>
+<td width="33%" align="left" valign="top"><a href="basic-network-commands-finger.html"
+accesskey="P">Prev</a></td>
+<td width="34%" align="center" valign="top"><a href="index.html"
+accesskey="H">Home</a></td>
+<td width="33%" align="right" valign="top"><a href="basic-network-commands-ssh.html"
+accesskey="N">Next</a></td>
+</tr>
+
+<tr>
+<td width="33%" align="left" valign="top"><tt class="COMMAND">finger</tt></td>
+<td width="34%" align="center" valign="top"><a href="basic-network-commands.html"
+accesskey="U">Up</a></td>
+<td width="33%" align="right" valign="top">The Secure shell</td>
+</tr>
+</table>
+</div>
+</body>
+</html>
+