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	<title>Mark Sanborn . net &#187; Security</title>
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	<link>http://www.marksanborn.net</link>
	<description>Coder, Entrepreneur, Blogger, and Coffee Addict</description>
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		<title>Installing Windows IPsec Firewall</title>
		<link>http://www.marksanborn.net/howto/installing-windows-ipsec-firewall/</link>
		<comments>http://www.marksanborn.net/howto/installing-windows-ipsec-firewall/#comments</comments>
		<pubDate>Thu, 04 Dec 2008 14:00:35 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Howto]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Firewall]]></category>
		<category><![CDATA[IPSec]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=549</guid>
		<description><![CDATA[Just recently I found a post that described using the ipseccmd in Windows. I honestly had no idea that this tool existed for Windows. I found this article while searching for a way to block outgoing traffic on the local &#8230; <a href="http://www.marksanborn.net/howto/installing-windows-ipsec-firewall/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>PHP Include Injection and Google Referral Hijack</title>
		<link>http://www.marksanborn.net/php/php-include-injection-and-google-referral-hijack/</link>
		<comments>http://www.marksanborn.net/php/php-include-injection-and-google-referral-hijack/#comments</comments>
		<pubDate>Wed, 03 Dec 2008 14:00:02 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Regular Expression]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=597</guid>
		<description><![CDATA[So recently a friend of mine, had a client that had a very odd problem. His website was working fine when you go to it directly by typing in the domain name; however, if you searched for the site in &#8230; <a href="http://www.marksanborn.net/php/php-include-injection-and-google-referral-hijack/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Validating an Email Address With Zend Framework</title>
		<link>http://www.marksanborn.net/php/validating-an-email-address-with-zend-framework/</link>
		<comments>http://www.marksanborn.net/php/validating-an-email-address-with-zend-framework/#comments</comments>
		<pubDate>Mon, 24 Nov 2008 14:00:21 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Validation]]></category>
		<category><![CDATA[Zend Framework]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=522</guid>
		<description><![CDATA[Email addresses are one of trickiest input types to validate because there are multiple ways emails can be written according to the RFC2822 specification. You could have me@gmail.com, or me+spam@gmail.com, or &#8220;mark@server&#8221;@marksanborn.net, common on Linux/BSD systems. A lot of times &#8230; <a href="http://www.marksanborn.net/php/validating-an-email-address-with-zend-framework/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://www.marksanborn.net/php/validating-an-email-address-with-zend-framework/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Validating Credit Card Numbers with Zend Framework</title>
		<link>http://www.marksanborn.net/php/validating-credit-card-numbers-with-zend-framework/</link>
		<comments>http://www.marksanborn.net/php/validating-credit-card-numbers-with-zend-framework/#comments</comments>
		<pubDate>Fri, 21 Nov 2008 19:30:02 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Howto]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Zend Framework]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=533</guid>
		<description><![CDATA[Ever wonder how websites can tell you made a mistake entering your credit card number before you even submit it? Like most identification numbers credit cards have checksum digits built into them. Just like barcodes. If you ever look at &#8230; <a href="http://www.marksanborn.net/php/validating-credit-card-numbers-with-zend-framework/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>6</slash:comments>
		</item>
		<item>
		<title>Why I Would Never Hijack Someone&#8217;s Internet</title>
		<link>http://www.marksanborn.net/security/why-i-would-never-hijack-someones-internet/</link>
		<comments>http://www.marksanborn.net/security/why-i-would-never-hijack-someones-internet/#comments</comments>
		<pubDate>Sun, 16 Nov 2008 20:23:13 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=511</guid>
		<description><![CDATA[Well for the short answer all you have to do is ask your self this simple question. Would you give your mail, credit cards and other personal information to a complete stranger? Probably not. By connecting to someone else&#8217;s internet &#8230; <a href="http://www.marksanborn.net/security/why-i-would-never-hijack-someones-internet/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Validating an IP Address with PHP</title>
		<link>http://www.marksanborn.net/php/validating-an-ip-address-with-php/</link>
		<comments>http://www.marksanborn.net/php/validating-an-ip-address-with-php/#comments</comments>
		<pubDate>Mon, 02 Jun 2008 16:31:34 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=183</guid>
		<description><![CDATA[For security purposes, all user input should be validated before accepting. In this case we are going to run a regular expression to determine whether or not an IP address is valid. This function could be used on forms or &#8230; <a href="http://www.marksanborn.net/php/validating-an-ip-address-with-php/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>One-Time Use Credit Cards</title>
		<link>http://www.marksanborn.net/security/one-time-use-credit-cards/</link>
		<comments>http://www.marksanborn.net/security/one-time-use-credit-cards/#comments</comments>
		<pubDate>Thu, 22 May 2008 14:00:36 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=173</guid>
		<description><![CDATA[A new era of credit card protection is here! Paypal is offering disposable one-time use credit cards free of charge. You don&#8217;t even need to even own a credit card to use them. A simple Paypal membership will suffice. Today &#8230; <a href="http://www.marksanborn.net/security/one-time-use-credit-cards/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://www.marksanborn.net/security/one-time-use-credit-cards/feed/</wfw:commentRss>
		<slash:comments>6</slash:comments>
		</item>
		<item>
		<title>Creating a Secure Md5 Hash for Storing Passwords in a Database</title>
		<link>http://www.marksanborn.net/php/creating-a-secure-md5-hash-for-storing-passwords-in-a-database/</link>
		<comments>http://www.marksanborn.net/php/creating-a-secure-md5-hash-for-storing-passwords-in-a-database/#comments</comments>
		<pubDate>Mon, 19 May 2008 15:00:45 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Md5]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=165</guid>
		<description><![CDATA[Often times we, as developers are required to create authentication systems. When developing an authentication system it is always best to make it as secure as possible. One of the problems that arise when creating an authentication system is storing &#8230; <a href="http://www.marksanborn.net/php/creating-a-secure-md5-hash-for-storing-passwords-in-a-database/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://www.marksanborn.net/php/creating-a-secure-md5-hash-for-storing-passwords-in-a-database/feed/</wfw:commentRss>
		<slash:comments>6</slash:comments>
		</item>
		<item>
		<title>I Received my PayPal SecureKey Today</title>
		<link>http://www.marksanborn.net/security/i-received-my-paypal-securekey-today/</link>
		<comments>http://www.marksanborn.net/security/i-received-my-paypal-securekey-today/#comments</comments>
		<pubDate>Thu, 15 May 2008 15:00:18 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Security]]></category>
		<category><![CDATA[Multi-factor Authentication]]></category>
		<category><![CDATA[Paypal]]></category>
		<category><![CDATA[SecurityKey]]></category>
		<category><![CDATA[Verisign]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=164</guid>
		<description><![CDATA[Well, today I received my Paypal SecurityKey. I have been really excited to try this device and I have been anxiously waiting for its arrival. Today I finally received it and overall I really like it and I am glad &#8230; <a href="http://www.marksanborn.net/security/i-received-my-paypal-securekey-today/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://www.marksanborn.net/security/i-received-my-paypal-securekey-today/feed/</wfw:commentRss>
		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>Paypal Security Key for Multi-Factor Authentication</title>
		<link>http://www.marksanborn.net/uncategorized/paypal-security-key-for-multi-factor-authentication/</link>
		<comments>http://www.marksanborn.net/uncategorized/paypal-security-key-for-multi-factor-authentication/#comments</comments>
		<pubDate>Tue, 06 May 2008 04:19:22 +0000</pubDate>
		<dc:creator>Mark Sanborn</dc:creator>
				<category><![CDATA[Security]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Multi-factor Authentication]]></category>
		<category><![CDATA[Paypal]]></category>
		<category><![CDATA[Verisign]]></category>

		<guid isPermaLink="false">http://www.marksanborn.net/?p=155</guid>
		<description><![CDATA[After listening to an episode of the Security Now Podcast I was fascinated by the idea of multi-factor authentication. In the perfect paper password episode they discussed using one time passwords that were written on a credit card sized piece &#8230; <a href="http://www.marksanborn.net/uncategorized/paypal-security-key-for-multi-factor-authentication/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>2</slash:comments>
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