When I try <a href="http:&#x2F;&#x2F;192.168.100.1&#x2F;cgi-bin&#x2F;tech_support_cgi" rel="nofollow">http:&#x2F;&#x2F;192.168.100.1&#x2F;cgi-bin&#x2F;tech_support_cgi</a> on an Arris modem it says:<p><pre><code>   NET-DK&#x2F;1.0 Error: 401 Unauthorized</code></pre>