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<channel>
	<title>Pedro Pereira</title>
	
	<link>http://www.pedropereira.net</link>
	<description>Linux, Cisco, *BSD's, um pouco de Windows e o que mais eu achar interessante :)</description>
	<lastBuildDate>Sun, 22 Jan 2012 21:52:07 +0000</lastBuildDate>
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		<title>Mega post: ACLs – Entenda de uma vez por todas!</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/R8XeLLZhCvo/</link>
		<comments>http://www.pedropereira.net/mega-post-acls-entenda-de-uma-vez-por-todas/#comments</comments>
		<pubDate>Sat, 21 Jan 2012 01:15:40 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Cisco]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=303</guid>
		<description>Uma ACL, no contexto dos produtos Cisco, é um recurso do IOS que permite a você filtrar determinados pacotes, exatamente como um firewall faria porém de uma maneira muito mais simplificada e com menos recursos. Utilizando ACLs no seu equipamento você pode filtrar tentativas de conexões indo/vindo de/para hosts específicos; pode bloquear completamente um determinado [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=R8XeLLZhCvo:suxGFR-jBiE:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=R8XeLLZhCvo:suxGFR-jBiE:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=R8XeLLZhCvo:suxGFR-jBiE:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=R8XeLLZhCvo:suxGFR-jBiE:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=R8XeLLZhCvo:suxGFR-jBiE:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=R8XeLLZhCvo:suxGFR-jBiE:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=R8XeLLZhCvo:suxGFR-jBiE:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Por que meus e-mails vão para a caixa de SPAM?</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/PyM8En673M0/</link>
		<comments>http://www.pedropereira.net/emails-indo-para-spam-yahoo-hotmail/#comments</comments>
		<pubDate>Sat, 03 Dec 2011 00:29:29 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Servidor de e-mail]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=293</guid>
		<description>O SPAM hoje em dia é um problema tão sério que todos somos obrigados a tomar medidas duras para conseguir diminuir a quantidade de recursos disperdiçados por lixo eletrônico. De acordo com algumas pesquisas, o SPAM chega a representar mais de 80% de todas as mensagens de e-mail trocadas no mundo. Dado um problema tão [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=PyM8En673M0:pkBe91R8mU4:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=PyM8En673M0:pkBe91R8mU4:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=PyM8En673M0:pkBe91R8mU4:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=PyM8En673M0:pkBe91R8mU4:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=PyM8En673M0:pkBe91R8mU4:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=PyM8En673M0:pkBe91R8mU4:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=PyM8En673M0:pkBe91R8mU4:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
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		<item>
		<title>Kippo: honeypot SSH</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/NVkH2yv9iL8/</link>
		<comments>http://www.pedropereira.net/kippo-honeypot-ssh/#comments</comments>
		<pubDate>Sun, 25 Sep 2011 20:52:55 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Segurança]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=285</guid>
		<description>O Kippo é um honeypot que simula o serviço SSH e permite a você entender como um atacante age quando consegue comprometer um sistema através deste serviço, dando a oportunidade de melhorar bastante a proteção do seu sistema para que um dos seus servidores reais não seja a próxima vítima. Vou tentar explicar de forma [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=NVkH2yv9iL8:RRdwjDvq-Jo:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=NVkH2yv9iL8:RRdwjDvq-Jo:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=NVkH2yv9iL8:RRdwjDvq-Jo:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=NVkH2yv9iL8:RRdwjDvq-Jo:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=NVkH2yv9iL8:RRdwjDvq-Jo:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=NVkH2yv9iL8:RRdwjDvq-Jo:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=NVkH2yv9iL8:RRdwjDvq-Jo:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/NVkH2yv9iL8" height="1" width="1"/&gt;</description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Como configurar e usar o sudo</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/hsAeYPzopVE/</link>
		<comments>http://www.pedropereira.net/como-configurar-e-usar-o-sudo/#comments</comments>
		<pubDate>Wed, 14 Sep 2011 13:38:03 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Segurança]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=271</guid>
		<description>Muitas vezes você precisa executar um programa com as credenciais de um outro usuário do sistema (geralmente o root). Quando isso acontece você (ou qualquer outra pessoa que quer executar este programa com outras credenciais) deve saber a senha desta outra conta. Nos casos em que você precisa executar algo como root, você já começa [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=hsAeYPzopVE:4NKKYzuQFi4:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=hsAeYPzopVE:4NKKYzuQFi4:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=hsAeYPzopVE:4NKKYzuQFi4:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=hsAeYPzopVE:4NKKYzuQFi4:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=hsAeYPzopVE:4NKKYzuQFi4:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=hsAeYPzopVE:4NKKYzuQFi4:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=hsAeYPzopVE:4NKKYzuQFi4:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/hsAeYPzopVE" height="1" width="1"/&gt;</description>
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		<slash:comments>1</slash:comments>
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		<item>
		<title>Criando views no Cisco IOS</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/pU0u72mCigY/</link>
		<comments>http://www.pedropereira.net/criando-views-no-cisco-ios/#comments</comments>
		<pubDate>Sun, 26 Jun 2011 21:05:35 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Cisco]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=265</guid>
		<description>O Cisco IOS (Internetwork Operating System), o sistema operacional utilizado na maioria dos dispositivos da Cisco, tem uma funcionalidade muito interessante: views (na literatura da Cisco &amp;#8211; publicada pela Cisco Press &amp;#8211; é provável que você encontre isso sendo chamado de &amp;#8220;Role-Based Command-Line Interface Access&amp;#8221;. Aqui vou chamar de views por ser mais fácil). As [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=pU0u72mCigY:N_Gq-ZiXHDE:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=pU0u72mCigY:N_Gq-ZiXHDE:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=pU0u72mCigY:N_Gq-ZiXHDE:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=pU0u72mCigY:N_Gq-ZiXHDE:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=pU0u72mCigY:N_Gq-ZiXHDE:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=pU0u72mCigY:N_Gq-ZiXHDE:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=pU0u72mCigY:N_Gq-ZiXHDE:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/pU0u72mCigY" height="1" width="1"/&gt;</description>
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		<slash:comments>3</slash:comments>
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		<item>
		<title>Como usar o TCPDump</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/C15vpJEtuL0/</link>
		<comments>http://www.pedropereira.net/como-usar-o-tcpdump/#comments</comments>
		<pubDate>Wed, 01 Jun 2011 22:25:37 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Redes]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=260</guid>
		<description>﻿Um sniffer é um programa cuja principal função é capturar pacotes que estão sendo transmitidos através de uma rede. Assim, ela permite a você, o administrador de redes, analisar o comportamento da rede auxiliando muito na hora de encontrar problemas, máquinas infectadas, tráfego malicioso, gargalos, etc. Para que o sniffer consiga capturar os pacotes gerados [...]&lt;div class="feedflare"&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/C15vpJEtuL0" height="1" width="1"/&gt;</description>
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		<item>
		<title>Configurando Syslog e NTP no Cisco IOS</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/GV-DSrQ4xR8/</link>
		<comments>http://www.pedropereira.net/syslog-ntp-cisco-ios-roteador-switch/#comments</comments>
		<pubDate>Sat, 19 Mar 2011 16:27:41 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Cisco]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=253</guid>
		<description>Quando um atacante invade um sistema, a primeira coisa que ele faz é tentar apagar os rastros que ele deixou. E onde ficam esses rastros? Em grande parte, nos arquivos de log do sistema. Lá tudo é registrado: que usuário logou, quais logins falharam, quantas vezes falharam, qual usuário mudou a senha, configurou o IOS [...]&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=GV-DSrQ4xR8:y66vSyOBw4Q:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=GV-DSrQ4xR8:y66vSyOBw4Q:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=GV-DSrQ4xR8:y66vSyOBw4Q:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=GV-DSrQ4xR8:y66vSyOBw4Q:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=GV-DSrQ4xR8:y66vSyOBw4Q:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/pedropereiranet?a=GV-DSrQ4xR8:y66vSyOBw4Q:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/pedropereiranet?i=GV-DSrQ4xR8:y66vSyOBw4Q:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/GV-DSrQ4xR8" height="1" width="1"/&gt;</description>
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		<item>
		<title>Ataques brute force com o Hydra</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/Tjjz8LEVJpw/</link>
		<comments>http://www.pedropereira.net/brute-force-senhas-hydra/#comments</comments>
		<pubDate>Thu, 16 Dec 2010 23:29:08 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Segurança]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=251</guid>
		<description>Senhas são talvez o elo mais fraco em qualquer sistema de segurança existente hoje em dia. Nem sempre o administrador, que tem conhecimento de questões relacionadas à segurança da informação, pode acompanhar o usuário e garantir que ele faça uma escolha de senha segura. Muitas vezes, nem mesmo quando se define regras para senhas pode-se [...]&lt;div class="feedflare"&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/Tjjz8LEVJpw" height="1" width="1"/&gt;</description>
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		<item>
		<title>Configuração de roteadores Cisco</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/LuQ7E8DHJ_Y/</link>
		<comments>http://www.pedropereira.net/configuracao-de-roteadores-cisco/#comments</comments>
		<pubDate>Sat, 16 Oct 2010 17:24:56 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[Cisco]]></category>
		<category><![CDATA[Redes]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=246</guid>
		<description>Um roteador, ou router, nada mais é que um computador especializado em realizar uma tarefa específica. Neste caso, o roteador é especializado em interconectar redes. Sejam redes a quilômetros de distância ou duas redes no mesmo prédio: o roteador define como chegar de uma rede à outra, define quais rotas o pacote pode pegar e [...]&lt;div class="feedflare"&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/LuQ7E8DHJ_Y" height="1" width="1"/&gt;</description>
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		<item>
		<title>Instalando e configurando o JBoss no Linux</title>
		<link>http://feedproxy.google.com/~r/pedropereiranet/~3/d-3Yt0opkkY/</link>
		<comments>http://www.pedropereira.net/instalando-e-configurando-o-jboss-no-linux/#comments</comments>
		<pubDate>Sun, 12 Sep 2010 13:58:53 +0000</pubDate>
		<dc:creator>Pedro Pereira</dc:creator>
				<category><![CDATA[JBoss]]></category>

		<guid isPermaLink="false">http://www.pedropereira.net/?p=243</guid>
		<description>O JBoss é um application server para aplicativos web desenvolvidos em Java, que implementa Java EE. Ele surgiu como um projeto independente, se transformou em uma empresa e algum tempo depois acabou sendo comprado pela Red Hat que o manteve gratuito e sob a GPL. Ele possui várias funcionalidades que o tornam uma excelente escolha [...]&lt;div class="feedflare"&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/pedropereiranet/~4/d-3Yt0opkkY" height="1" width="1"/&gt;</description>
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