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	<title>blog.franciscodavid.eu</title>
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	<link>http://blog.franciscodavid.eu</link>
	<description>Code, Science, Technology and Entrepreneurship</description>
	<lastBuildDate>Fri, 19 Aug 2011 22:23:09 +0000</lastBuildDate>
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		<title>Secure port forwarding with SSH</title>
		<link>http://blog.franciscodavid.eu/2011/02/01/secure-port-forwarding-with-ssh/</link>
		<comments>http://blog.franciscodavid.eu/2011/02/01/secure-port-forwarding-with-ssh/#comments</comments>
		<pubDate>Tue, 01 Feb 2011 12:00:12 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[port forwarding]]></category>
		<category><![CDATA[ssh]]></category>

		<guid isPermaLink="false">http://www.franciscodavid.com/?p=1</guid>
		<description><![CDATA[Sometimes, it&#8217;s desirable to connect to a remote machine running a specific service without enabling it for the whole Internet. This can be done with port forwarding. Port forwarding allows you to bind a local IP socket to a remote &#8230; <a href="http://blog.franciscodavid.eu/2011/02/01/secure-port-forwarding-with-ssh/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>0</slash:comments>
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		<title>How to configure pwsafe properly in Ubuntu Maverick Meerkat</title>
		<link>http://blog.franciscodavid.eu/2011/01/11/how-to-configure-pwsafe-properly-in-ubuntu-maverick-meerkat/</link>
		<comments>http://blog.franciscodavid.eu/2011/01/11/how-to-configure-pwsafe-properly-in-ubuntu-maverick-meerkat/#comments</comments>
		<pubDate>Tue, 11 Jan 2011 16:30:01 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[maverick]]></category>
		<category><![CDATA[memlock]]></category>
		<category><![CDATA[password]]></category>
		<category><![CDATA[pwsafe]]></category>
		<category><![CDATA[random]]></category>
		<category><![CDATA[security]]></category>
		<category><![CDATA[ubuntu]]></category>

		<guid isPermaLink="false">http://blog.franciscodavid.eu/?p=540</guid>
		<description><![CDATA[pwsafe is a command line application that stores safely your passwords on an encrypted database located at your $HOMEDIR/.pwsafe.dat file. It also suggests random passwords for you to use, and it&#8217;s perfect to store all your passwords at home and &#8230; <a href="http://blog.franciscodavid.eu/2011/01/11/how-to-configure-pwsafe-properly-in-ubuntu-maverick-meerkat/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://blog.franciscodavid.eu/2011/01/11/how-to-configure-pwsafe-properly-in-ubuntu-maverick-meerkat/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Reaching services over HTTP with HTTPtunnel</title>
		<link>http://blog.franciscodavid.eu/2010/11/21/reaching-services-over-http-with-httptunnel/</link>
		<comments>http://blog.franciscodavid.eu/2010/11/21/reaching-services-over-http-with-httptunnel/#comments</comments>
		<pubDate>Sun, 21 Nov 2010 13:35:13 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[firewall]]></category>
		<category><![CDATA[http]]></category>
		<category><![CDATA[httptunnel]]></category>
		<category><![CDATA[port]]></category>
		<category><![CDATA[ssh]]></category>

		<guid isPermaLink="false">http://blog.franciscodavid.eu/?p=533</guid>
		<description><![CDATA[Having some ports closed is very common in public wireless networks. For example, when I&#8217;m at University I&#8217;m able to use only a small set of ports like 80 (HTTP) and 443 (HTTPS). Sometimes you need to connect to web &#8230; <a href="http://blog.franciscodavid.eu/2010/11/21/reaching-services-over-http-with-httptunnel/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://blog.franciscodavid.eu/2010/11/21/reaching-services-over-http-with-httptunnel/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Using SCP Port Knocking Remote Hosts</title>
		<link>http://blog.franciscodavid.eu/2010/08/03/using-scp-port-knocking-remote-hosts/</link>
		<comments>http://blog.franciscodavid.eu/2010/08/03/using-scp-port-knocking-remote-hosts/#comments</comments>
		<pubDate>Tue, 03 Aug 2010 16:48:50 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[port knocking]]></category>
		<category><![CDATA[scp]]></category>

		<guid isPermaLink="false">http://blog.franciscodavid.eu/?p=489</guid>
		<description><![CDATA[The scripts I posted to open SSH connections through port knocking are very useful to me. But when it comes to transferring files with SCP, port knocking is a nightmare. So I&#8217;ve done a similar bash function that automatically deals &#8230; <a href="http://blog.franciscodavid.eu/2010/08/03/using-scp-port-knocking-remote-hosts/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://blog.franciscodavid.eu/2010/08/03/using-scp-port-knocking-remote-hosts/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Port Knocking The Easy Way</title>
		<link>http://blog.franciscodavid.eu/2010/08/02/port-knocking-the-easy-way/</link>
		<comments>http://blog.franciscodavid.eu/2010/08/02/port-knocking-the-easy-way/#comments</comments>
		<pubDate>Mon, 02 Aug 2010 11:23:55 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[iptables]]></category>
		<category><![CDATA[port knocking]]></category>
		<category><![CDATA[ssh]]></category>

		<guid isPermaLink="false">http://blog.franciscodavid.eu/?p=8</guid>
		<description><![CDATA[I had implemented port knocking before with linux daemons and knocking clients but this requires installing software that is always running and consuming memory and processor resources. If you are using a Virtual Private Server –as I am–, you can&#8217;t &#8230; <a href="http://blog.franciscodavid.eu/2010/08/02/port-knocking-the-easy-way/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<wfw:commentRss>http://blog.franciscodavid.eu/2010/08/02/port-knocking-the-easy-way/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
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		<title>Joining PDF files with Ghostview</title>
		<link>http://blog.franciscodavid.eu/2010/03/11/joining-pdf-files-with-ghostview/</link>
		<comments>http://blog.franciscodavid.eu/2010/03/11/joining-pdf-files-with-ghostview/#comments</comments>
		<pubDate>Thu, 11 Mar 2010 20:13:23 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[ghostview]]></category>
		<category><![CDATA[pdf]]></category>

		<guid isPermaLink="false">http://franciscodavid.com/?p=339</guid>
		<description><![CDATA[If you ever have to join multiple PDF files into one unique document, you can use Ghostview. Running the following command, it will merge a collection of PDF files into a new one.]]></description>
		<wfw:commentRss>http://blog.franciscodavid.eu/2010/03/11/joining-pdf-files-with-ghostview/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Incremental backups with tar</title>
		<link>http://blog.franciscodavid.eu/2010/02/11/incremental-backups-with-tar/</link>
		<comments>http://blog.franciscodavid.eu/2010/02/11/incremental-backups-with-tar/#comments</comments>
		<pubDate>Thu, 11 Feb 2010 16:34:52 +0000</pubDate>
		<dc:creator>franciscodavid</dc:creator>
				<category><![CDATA[Code]]></category>
		<category><![CDATA[backup]]></category>
		<category><![CDATA[incremental backup]]></category>
		<category><![CDATA[snapshot]]></category>
		<category><![CDATA[tar]]></category>

		<guid isPermaLink="false">http://www.franciscodavid.com/?p=207</guid>
		<description><![CDATA[When you have to backup a large amount of data, simple backups are a waste of time and storage space. In this situation, the most suitable option is to backup data incrementally. Although there are different methods, today I&#8217;ll explain &#8230; <a href="http://blog.franciscodavid.eu/2010/02/11/incremental-backups-with-tar/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
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		<slash:comments>0</slash:comments>
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