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+====== iwconfig ======
+<p>Iwconfig is another wireless tool that is hopefully present on your distro. Unlike iwlist, iwconfig can be used to actually set parameters in a wireless card rather than just look at their settings.</p>
+<p>To use iwconfig, open a terminal window and type:</p>
+<blockquote><p>
+iwconfig
+</p></blockquote>
+<p>This shows me the following. Your system may vary:</p>
+<blockquote>
+<ul>
+<li>lo        no wireless extensions.</li>
+<li>eth0      no wireless extensions.</li>
+<li>wlan0     IEEE 802.11b+  ESSID:&#8221;driveon&#8221;  Nickname:&#8221;acx100 v0.2.0pre8&#8243;
+          Mode:Managed  Frequency:2.442 GHz  Access Point: 00:06:25:9A:50:C8
+          Bit Rate:1 Mb/s   Tx-Power:18 dBm   Sensitivity''187/255
+          Retry min limit:7   RTS thr:off
+          Power Management:off
+          Link Quality''54/100  Signal level''39/100  Noise level''1/100
+          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
+          Tx excessive retries:0  Invalid misc:0   Missed beacon:0</li>
+<li>sit0      no wireless extensions.</li>
+</ul>
+<p><em>lo</em> is my local adapter and it shows that it&#8217;s not wireless
+<em>eth0</em> is my wired ethernet card and it shows that it&#8217;s not wireless
+<em>wlan0</em> <strong>is</strong> my wireless card and it shows that it is wireless - good!
+<em>sit0</em> stands for &#8217;simple internet transition&#8217; but that&#8217;s all I know about it. In any case - it&#8217;s not wireless.
+</p></blockquote>
+<p>I highly advise typing <em>man iwconfig</em> to get complete information on everything that can be done with the iwconfig command, but here are some of the more common commands you may want to use:</p>
+<blockquote>
+<ul>
+<li>iwconfig wlan0 enc &lt; key &gt;: Sets the WEP encryption key to &lt; key &gt;</li>
+<li>iwconfig wlan0 mode managed: Sets the mode to managed</li>
+<li>iwconfig essid driveon: Sets the ESSID/SSID to &#8216;driveon&#8217;</li>
+<li>iwconfig channel 7: Sets the card to use channel 7</li>
+</ul>
+<ul>
+<p>Note that you can put all these commands together, as in:
+</p></ul>
+<ul>
+<li>iwconfig wlan0 enc <mykey> mode managed essid driveon channel 7</mykey></li>
+</ul>
+</blockquote>
+<p>Note that iwconfig is used to set the parameters of the card, it does not bring the card &#8216;up&#8217; for use. You must use the command:</p>
+<blockquote><p>
+ifconfig wlan0 up
+</p></blockquote>
+<p>for that.</p>
+-- Main.FredPettis - 04 Mar 2009