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	<title>NetBrix - "your go to guys!" &#187; Security</title>
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	<link>http://www.netbrix.net</link>
	<description>We deliver you from hosting hell, on time, everytime!</description>
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		<title>Challenge-Response &#8212; to fight email SPAM</title>
		<link>http://www.netbrix.net/archives/122</link>
		<comments>http://www.netbrix.net/archives/122#comments</comments>
		<pubDate>Sun, 19 Aug 2007 04:23:17 +0000</pubDate>
		<dc:creator>Imtiaz</dc:creator>
				<category><![CDATA[Security]]></category>

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		<description><![CDATA[Well how about a challenge-response mechanism. How about asking the sender to ensure that they sent you the message before letting the message reach your mailbox.]]></description>
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		<title>Secure SMTP + pop-before-smtp + road warriors</title>
		<link>http://www.netbrix.net/archives/120</link>
		<comments>http://www.netbrix.net/archives/120#comments</comments>
		<pubDate>Sat, 02 Jun 2007 21:33:43 +0000</pubDate>
		<dc:creator>Imtiaz</dc:creator>
				<category><![CDATA[Security]]></category>

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		<description><![CDATA[This writeup illustrates how you can enable secure roaming access to an smtp server while simultaneously adding a further layer of security to your postfix mail server. Not 100% guaranteed to keep thieves at bay but very effective.
It works on the principle that if you have an account on the server you are authorized to [...]]]></description>
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		<title>Linux Security + prevent password brute forcing + ssh security + firewall + iptables</title>
		<link>http://www.netbrix.net/archives/117</link>
		<comments>http://www.netbrix.net/archives/117#comments</comments>
		<pubDate>Tue, 08 May 2007 05:24:13 +0000</pubDate>
		<dc:creator>Imtiaz</dc:creator>
				<category><![CDATA[Security]]></category>

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		<description><![CDATA[This is a quick and dirty how to on setting up a firewall + Bruteforce detection/prevention mechanism + AntiDOS system on your dedicated Linux server.
Assumes root access


APF

APF is a policy based iptables firewall system designed for ease of use and configuration. 
mkdir $HOME/src
cd $HOME/src
wget http://www.rfxnetworks.com/downloads/apf-current.tar.gz
tar -xvzf apf-current.tar.gz
cd apf-0.9.6-1/
./install.sh
vi /etc/apf/conf.apf
(edit the IG_TCP line and add ports [...]]]></description>
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