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	<title>Arricc &#187; security</title>
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	<description>50% IT snippets that I couldn&#039;t readily find existing help on. 50% drivel.</description>
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		<title>Group Policy to disable Autorun</title>
		<link>http://www.arricc.net/group-policy-to-disable-autorun.php</link>
		<comments>http://www.arricc.net/group-policy-to-disable-autorun.php#comments</comments>
		<pubDate>Wed, 21 Jan 2009 10:59:10 +0000</pubDate>
		<dc:creator>Fizzgig</dc:creator>
				<category><![CDATA[Active Directory]]></category>
		<category><![CDATA[group policy]]></category>
		<category><![CDATA[security]]></category>
		<category><![CDATA[Tech]]></category>
		<category><![CDATA[autorun]]></category>

		<guid isPermaLink="false">http://www.arricc.net/group-policy-to-disable-autorun.php</guid>
		<description><![CDATA[Well, its been a while, but I thought I&#8217;d share this little snippet. Theres a big hoo-ha going round at the minute about a number of viruses that are exploiting autorun.inf to spread. You can read all the gorey details over at CERT &#8220;Microsoft Windows Does Not Disable AutoRun Properly&#8221; Essentially, the recommended fix is [...]]]></description>
			<content:encoded><![CDATA[<p>Well, its been a while, but I thought I&#8217;d share this little snippet.</p>
<p>Theres a big hoo-ha going round at the minute about a number of viruses that are exploiting autorun.inf to spread.</p>
<p>You can read all the gorey details over at CERT &#8220;<a href="http://www.us-cert.gov/cas/techalerts/TA09-020A.html">Microsoft Windows Does Not Disable AutoRun Properly</a>&#8221;</p>
<p>Essentially, the recommended fix is to set a registry key. I did read somewhere that this makes windows handle the file as a Win95 ini file but sadly I can&#8217;t find the blog/article where I read that anymore.</p>
<p>Approaching this as a sysadmin and wanting to undertake minimal effort to resolve this issue I&#8217;ve create a Group Policy adm file to solve apply it to all the machines in an Active Directory domain. I&#8217;ve copied the contents below and attached the file to this post.</p>
<p>To use it:</p>
<ol>
<li>Create a new group policy object in your AD</li>
<li>Edit it, right click on the Administrative Templates folder and remove all the default ones listed and add the one below.</li>
<li>Right click on the Administrative Templates folder and change the view filtering to not hide settings that can&#8217;t be fully managed</li>
<li>Group poicy editor will now display the setting to disable autorun which will set the appropriate registry key</li>
</ol>
<p>ADM files are just text. You can either download the one below or copy and paste this (watch for the line wrap on the last line!):<br />
<span id="more-35"></span><br />
<div class="codeblock"><code>; US-CERT Technical Cyber Security Alert TA09-020A -- Microsoft Windows Does Not Disable AutoRun Properly<br />; http://www.us-cert.gov/cas/techalerts/TA09-020A.html<br />;<br />;FIX:<br />;REGEDIT4<br />;&nbsp;  [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Autorun.inf]<br />;&nbsp;  @=&quot;@SYS:DoesNotExist&quot;<br />;<br />;<br />CLASS MACHINE<br />	CATEGORY !!RegistryFixes<br />		POLICY !!AutoRunInfSYSDoesNotExist<br />	&nbsp; &nbsp; &nbsp; &nbsp; #if version &gt;= 4<br />	&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SUPPORTED !!SUPPORTED_WindowsXPSP2<br />	&nbsp; &nbsp; &nbsp; &nbsp; #endif<br />	&nbsp; &nbsp; &nbsp; &nbsp; EXPLAIN !!AutoRunInfSYSDoesNotExist_Help<br />	&nbsp; &nbsp; &nbsp; &nbsp; KEYNAME &quot;SOFTWARE\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Autorun.inf&quot;<br />	&nbsp; &nbsp; &nbsp; &nbsp; VALUENAME &quot;&quot;<br />	&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; VALUEON &quot;@SYS:DoesNotExist&quot;<br />	&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; VALUEOFF DELETE<br />&nbsp; &nbsp; 	END POLICY<br />&nbsp; &nbsp; END CATEGORY ; DisableRemovableStorage<br />[strings]<br />RegistryFixes=&quot;Registry Settings&quot;<br />SUPPORTED_WindowsXPSP2=&quot;Microsoft Windows XP Professional SP2 or later&quot;<br />AutoRunInfSYSDoesNotExist=&quot;Disable auto handling of Autorun.inf&quot;<br />AutoRunInfSYSDoesNotExist_Help=&quot;As per US-CERT Technical Cyber Security Alert TA09-020A -- Microsoft Windows Does Not Disable AutoRun Properly\n\n\nhttp://www.us-cert.gov/cas/techalerts/TA09-020A.html&quot;<br /></code></div></p>
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		<item>
		<title>OpenDNS &#8211; free filtered DNS for the masses</title>
		<link>http://www.arricc.net/opendns-free-filtered-dns-for-the-masses.php</link>
		<comments>http://www.arricc.net/opendns-free-filtered-dns-for-the-masses.php#comments</comments>
		<pubDate>Mon, 11 Feb 2008 22:51:22 +0000</pubDate>
		<dc:creator>Fizzgig</dc:creator>
				<category><![CDATA[Tech]]></category>
		<category><![CDATA[dns]]></category>
		<category><![CDATA[free]]></category>
		<category><![CDATA[security]]></category>

		<guid isPermaLink="false">http://www.arricc.net/opendns-free-filtered-dns-for-the-masses.php</guid>
		<description><![CDATA[I&#8217;ve just started using a new (free) service called OpenDNS &#8211; http://www.opendns.com &#8211; at home and I&#8217;ve also set it up at work. You need to know very little about How The Web Works™ to know that this can be a good thing. DNS is where your computer takes a name like www.livejournal.com and turns [...]]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve just started using a new (free) service called OpenDNS &#8211; <a href="http://www.opendns.com">http://www.opendns.com</a> &#8211; at home and I&#8217;ve also set it up at work.</p>
<p>You need to know very little about How The Web Works™ to know that this can be a good thing.</p>
<p>DNS is where your computer takes a name like www.livejournal.com and turns it into a number that is used to route your computer to the right webserver.</p>
<p>OpenDNS doesn&#8217;t just give you the correct address for a website. It maintains a list of Phishing websites and redirects these to a safe page warning you about the site you were about to visit.</p>
<p>Of additional interest to me for its use at my work (and to parents who&#8217;s kids have access to the Internet) is that they don&#8217;t just categorise phishing websites, but they also have categories of adult and mature sites you can bar if you want (once you&#8217;ve signed up) </p>
<p>Took me a few minutes to setup (a little extra poking required at work, naturally). Very unintrusive &#8211; no software to install, just a couple of settings to change and they have lots of help pages on how to do that.</p>
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