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	<title>Everlinux's Blog &#187; Squid</title>
	<atom:link href="http://everlinux.com/blog/category/squid/feed" rel="self" type="application/rss+xml" />
	<link>http://everlinux.com/blog</link>
	<description>Sempre vivendo, aprendendo e blogando... :)</description>
	<lastBuildDate>Fri, 20 Aug 2010 12:26:35 +0000</lastBuildDate>
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		<title>Como autenticar serviços no LDAP da MS (Active Directory)</title>
		<link>http://everlinux.com/blog/2010/04/13/como-autenticar-servicos-no-ldap-da-ms-active-directory</link>
		<comments>http://everlinux.com/blog/2010/04/13/como-autenticar-servicos-no-ldap-da-ms-active-directory#comments</comments>
		<pubDate>Tue, 13 Apr 2010 14:07:22 +0000</pubDate>
		<dc:creator>Tiago Cruz</dc:creator>
				<category><![CDATA[Dicas]]></category>
		<category><![CDATA[LDAP]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Segurança]]></category>
		<category><![CDATA[Squid]]></category>
		<category><![CDATA[Ubuntu]]></category>
		<category><![CDATA[AD]]></category>
		<category><![CDATA[Apache]]></category>

		<guid isPermaLink="false">http://everlinux.com/blog/?p=1117</guid>
		<description><![CDATA[Imagine o seguinte cenário: Empresa de pequeno porte, com um AD instalado às pressas sem muitos cuidados e um servidor Linux lá no meio servindo de proxy. Se você tiver vontade de autenticar os serviços no AD, aqui vão alguns exemplos práticos e rápidos. Tome como base um Windows 2003, com o domínio chamado &#8220;EverLinux&#8221; [...]]]></description>
			<content:encoded><![CDATA[<p>Imagine o seguinte cenário: Empresa de pequeno porte, com um AD instalado às pressas sem muitos cuidados e um servidor Linux lá no meio servindo de proxy. Se você tiver vontade de autenticar os serviços no AD, aqui vão alguns exemplos práticos e rápidos.</p>
<p>Tome como base um Windows 2003, com o domínio chamado &#8220;EverLinux&#8221; e um usuário rosca lá chamado &#8220;tcruz&#8221; somente para fazer as buscas no diretório da Microsoft. O Linux seria um Ubuntu ou Debian da vida.</p>
<p><strong>Autenticando o Apache no AD</strong></p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #7a0874; font-weight: bold;">cd</span> <span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>apache2<span style="color: #000000; font-weight: bold;">/</span>mods-enabled
<span style="color: #c20cb9; font-weight: bold;">ln</span> <span style="color: #660033;">-s</span> ..<span style="color: #000000; font-weight: bold;">/</span>mods-available<span style="color: #000000; font-weight: bold;">/</span>ldap.load .
<span style="color: #c20cb9; font-weight: bold;">ln</span> <span style="color: #660033;">-s</span> ..<span style="color: #000000; font-weight: bold;">/</span>mods-available<span style="color: #000000; font-weight: bold;">/</span>authnz_ldap.load .
&nbsp;
<span style="color: #000000; font-weight: bold;">&lt;</span>Directory <span style="color: #ff0000;">&quot;/var/www/protegido&quot;</span><span style="color: #000000; font-weight: bold;">&gt;</span>
        AuthBasicProvider ldap
        AuthzLDAPAuthoritative off
        AuthName <span style="color: #ff0000;">&quot;Entre com a senha do AD&quot;</span>
        AuthType Basic
        AuthLDAPBindDN tcruz<span style="color: #000000; font-weight: bold;">@</span>everlinux
        AuthLDAPBindPassword senha_do_tcruz
        AuthLDAPURL ldap:<span style="color: #000000; font-weight: bold;">//</span>10.10.20.20:<span style="color: #000000;">3268</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">cn</span>=<span style="color: #c20cb9; font-weight: bold;">users</span>,<span style="color: #007800;"><span style="color: #c20cb9; font-weight: bold;">dc</span></span>=everlinux?sAMAccountName?one
        require user tcruz cmangini
        Allow from all
<span style="color: #000000; font-weight: bold;">&lt;/</span>Directory<span style="color: #000000; font-weight: bold;">&gt;</span></pre></div></div>

<p><strong>Autenticando o Squid no AD</strong></p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;">...
acl bloqueados dstdom_regex <span style="color: #660033;">-i</span> <span style="color: #ff0000;">&quot;/etc/squid/block.txt&quot;</span>
http_access deny bloqueados
&nbsp;
auth_param basic program <span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>squid<span style="color: #000000; font-weight: bold;">/</span>ldap_auth <span style="color: #660033;">-R</span> <span style="color: #660033;">-b</span> <span style="color: #ff0000;">&quot;dc=everlinux&quot;</span> <span style="color: #660033;">-D</span> \
<span style="color: #ff0000;">&quot;cn=tiago cruz,cn=users,dc=everlinux&quot;</span> <span style="color: #660033;">-w</span> <span style="color: #ff0000;">&quot;senha_tcruz&quot;</span> <span style="color: #660033;">-f</span> <span style="color: #007800;">sAMAccountName</span>=<span style="color: #000000; font-weight: bold;">%</span>s <span style="color: #660033;">-h</span> 10.10.20.20
auth_param basic children <span style="color: #000000;">5</span>
auth_param basic realm Autenticacao
auth_param basic credentialsttl <span style="color: #000000;">5</span> minutes
acl ldapauth proxy_auth REQUIRED
http_access allow ldapauth
...</pre></div></div>

<p><strong>Autenticando algo em PHP no AD</strong></p>
<p>O exemplo será o software <a href="http://www.oneorzero.com">OneOrZero</a> utilizado Help Desk:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;"># apt-get install php5-ldap</span>
&nbsp;
<span style="color: #c20cb9; font-weight: bold;">cat</span> <span style="color: #000000; font-weight: bold;">/</span>var<span style="color: #000000; font-weight: bold;">/</span>www<span style="color: #000000; font-weight: bold;">/</span>helpdesk<span style="color: #000000; font-weight: bold;">/</span>configuration<span style="color: #000000; font-weight: bold;">/</span>website_settings.php
auth_method = <span style="color: #ff0000;">&quot;AD&quot;</span>
ldap_host = <span style="color: #ff0000;">&quot;10.10.20.20&quot;</span>
ldap_domain = <span style="color: #ff0000;">&quot;everlinux&quot;</span>
ldap_binddn = <span style="color: #ff0000;">&quot;CN=Tiago Cruz,CN=Users,DC=everlinux&quot;</span>
ldap_bindpwd = <span style="color: #ff0000;">&quot;senha_tcruz&quot;</span>
ldap_rootdn = <span style="color: #ff0000;">&quot;CN=Users,DC=everlinux&quot;</span>
ldap_searchattr = <span style="color: #ff0000;">&quot;sAMAccountName&quot;</span>
ldap_fname = <span style="color: #ff0000;">&quot;givenname&quot;</span>
ldap_lname = <span style="color: #ff0000;">&quot;sn&quot;</span>
ldap_uname = <span style="color: #ff0000;">&quot;samaccountname&quot;</span>
ldap_email_add = <span style="color: #ff0000;">&quot;mail&quot;</span>
ldap_office = <span style="color: #ff0000;">&quot;physicaldeliveryofficename&quot;</span>
ldap_phone = <span style="color: #ff0000;">&quot;telephonenumber&quot;</span>
ldap_context = <span style="color: #ff0000;">&quot;sAMAccountName&quot;</span></pre></div></div>

<p><strong>Fazendo uma busca manualmente no diretório</strong></p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;"># ldapsearch -LLL -h 10.10.20.20 -P 3 -x -D &quot;cn=tiago cruz,cn=users,dc=everlinux&quot; -W \</span>
<span style="color: #660033;">-b</span> <span style="color: #ff0000;">&quot;cn=users,dc=everlinux&quot;</span>  <span style="color: #ff0000;">&quot;(&amp;(&amp;(objectClass=user)(objectCategory=person)) <span style="color: #000099; font-weight: bold;">\
</span>(sAMAccountName=tcruz))&quot;</span> 
Enter LDAP Password: 
dn: <span style="color: #007800;">CN</span>=Tiago Cruz,<span style="color: #007800;">CN</span>=Users,<span style="color: #007800;">DC</span>=everlinux
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: Tiago Cruz
sn: Cruz
physicalDeliveryOfficeName: EverLinuxs Office
telephoneNumber: <span style="color: #000000;">1234</span>-<span style="color: #000000;">4321</span>
givenName: Tiago
initials: ti
distinguishedName: <span style="color: #007800;">CN</span>=Tiago Cruz,<span style="color: #007800;">CN</span>=Users,<span style="color: #007800;">DC</span>=everlinux
instanceType: <span style="color: #000000;">4</span>
whenCreated: 20090427110042.0Z
whenChanged: 20100406221357.0Z
displayName: Tiago Cruz
uSNCreated: <span style="color: #000000;">555987</span>
memberOf:: <span style="color: #007800;">Q049QWRtaW5zLiBkbyBkb23DrW5pbyxDTj1Vc2VycyxEQz1kb21pbmlvMjAwNw</span>==
memberOf: <span style="color: #007800;">CN</span>=Administradores,<span style="color: #007800;">CN</span>=Builtin,<span style="color: #007800;">DC</span>=everlinux
uSNChanged: <span style="color: #000000;">2331137</span>
name: Tiago Cruz
objectGUID:: <span style="color: #000000;">39</span><span style="color: #007800;">teBl62JUWwzZz36nNICw</span>==
userAccountControl: <span style="color: #000000;">66048</span>
badPwdCount: <span style="color: #000000;">0</span>
codePage: <span style="color: #000000;">0</span>
countryCode: <span style="color: #000000;">0</span>
badPasswordTime: <span style="color: #000000;">129150648344589017</span>
lastLogoff: <span style="color: #000000;">0</span>
lastLogon: <span style="color: #000000;">129150648382871002</span>
pwdLastSet: <span style="color: #000000;">128853036428004858</span>
primaryGroupID: <span style="color: #000000;">513</span>
objectSid:: AQUAAAAAAAUVAAAAR0LCqonS5XyzPF2T+<span style="color: #007800;">AQAAA</span>==
adminCount: <span style="color: #000000;">1</span>
accountExpires: <span style="color: #000000;">9223372036854775807</span>
logonCount: <span style="color: #000000;">0</span>
sAMAccountName: tcruz
sAMAccountType: <span style="color: #000000;">80530263368</span>
userPrincipalName: tcruz<span style="color: #000000; font-weight: bold;">@</span>everlinux
objectCategory: <span style="color: #007800;">CN</span>=Person,<span style="color: #007800;">CN</span>=Schema,<span style="color: #007800;">CN</span>=Configuration,<span style="color: #007800;">DC</span>=everlinux
mail: tiagocruz AT everlinux.com</pre></div></div>

<p>Espero que com estas dicas fique mais fácil para você centralizar a autenticação de seus serviços, caso seja necessário integrar com um LDAP proprietário.</p>
]]></content:encoded>
			<wfw:commentRss>http://everlinux.com/blog/2010/04/13/como-autenticar-servicos-no-ldap-da-ms-active-directory/feed</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Squid Autenticando em um Active Directory</title>
		<link>http://everlinux.com/blog/2009/05/06/squid-autenticando-em-um-active-directory</link>
		<comments>http://everlinux.com/blog/2009/05/06/squid-autenticando-em-um-active-directory#comments</comments>
		<pubDate>Thu, 07 May 2009 00:31:08 +0000</pubDate>
		<dc:creator>Tiago Cruz</dc:creator>
				<category><![CDATA[Dicas]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Scripts]]></category>
		<category><![CDATA[Squid]]></category>
		<category><![CDATA[Ubuntu]]></category>
		<category><![CDATA[AD]]></category>

		<guid isPermaLink="false">http://everlinux.com/blog/?p=418</guid>
		<description><![CDATA[Dica rápida, sem muitas novidades. Apenas uma forma rápida de colocar um Squid 2.6.18 rodando em um Ubuntu 8.04 LTS para autenticar em um Windows 2003 Server, sem usar samba+winbind, dar join no domínio, usar ntp e etc. A idéia é documentar uma árvore LDAP padrão do Windows, para servir como base para futuras implementações, [...]]]></description>
			<content:encoded><![CDATA[<p>Dica rápida, sem muitas novidades. Apenas uma forma rápida de colocar um Squid 2.6.18 rodando em um Ubuntu 8.04 LTS para autenticar em um Windows 2003 Server, sem usar samba+winbind, dar join no domínio, usar ntp e etc.</p>
<p>A idéia é documentar uma árvore LDAP padrão do Windows, para servir como base para futuras implementações, visto que muitos admins de AD desconhecem esta informação <img src='http://everlinux.com/blog/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </p>
<p>No squid.conf, ficaria mais ou menos assim (o &#8220;\&#8221; é uma quebra de linha, porém o comando deve ficar em uma linha única):</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;">...
acl diretoria src 10.10.10.9<span style="color: #000000; font-weight: bold;">/</span><span style="color: #000000;">32</span>
http_access allow diretoria
&nbsp;
<span style="color: #666666; font-style: italic;"># Autenticacao AD Windows</span>
auth_param basic program <span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>squid<span style="color: #000000; font-weight: bold;">/</span>ldap_auth <span style="color: #660033;">-R</span> <span style="color: #660033;">-b</span> <span style="color: #ff0000;">&quot;dc=dominio&quot;</span> <span style="color: #660033;">-D</span> <span style="color: #ff0000;">&quot;cn=tiago <span style="color: #000099; font-weight: bold;">\
</span>cruz,cn=users,dc=dominio&quot;</span> <span style="color: #660033;">-w</span> <span style="color: #ff0000;">&quot;senha&quot;</span> <span style="color: #660033;">-f</span> <span style="color: #007800;">sAMAccountName</span>=<span style="color: #000000; font-weight: bold;">%</span>s <span style="color: #660033;">-h</span> 10.10.10.10
auth_param basic children <span style="color: #000000;">5</span>
auth_param basic realm Autenticacao
auth_param basic credentialsttl <span style="color: #000000;">5</span> minutes
acl ldapauth proxy_auth REQUIRED
http_access allow ldapauth
&nbsp;
<span style="color: #666666; font-style: italic;"># White List</span>
acl liberados dstdom_regex <span style="color: #660033;">-i</span> <span style="color: #ff0000;">&quot;/etc/squid/unblock.txt&quot;</span>
http_access allow liberados
...
<span style="color: #666666; font-style: italic;"># Rede Local LAN</span>
acl rede_local src 10.10.10.0<span style="color: #000000; font-weight: bold;">/</span><span style="color: #000000;">24</span>
http_access allow rede_local</pre></div></div>

<p>Caso <strong>não funcione</strong> &#8220;de prima&#8221;, recomendo estes comandos para <strong>debugar</strong> o problema:</p>
<p>1-) Usando o LDAPSearch para ver se retorna OK:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;">$ ldapsearch <span style="color: #660033;">-LLL</span> <span style="color: #660033;">-h</span> 10.10.10.10 <span style="color: #660033;">-P</span> <span style="color: #000000;">3</span> <span style="color: #660033;">-x</span> <span style="color: #660033;">-D</span> <span style="color: #ff0000;">&quot;CN=Tiago Cruz,CN=Users,DC=Dominio&quot;</span> \
<span style="color: #660033;">-W</span> <span style="color: #660033;">-b</span> <span style="color: #ff0000;">&quot;DC=Dominio&quot;</span> <span style="color: #ff0000;">&quot;(&amp;(&amp;(objectClass=User)(objectCategory=Person))(sAMAccountName=tcruz))&quot;</span>
Enter LDAP Password: 
dn: <span style="color: #007800;">CN</span>=Tiago Cruz,<span style="color: #007800;">CN</span>=Users,<span style="color: #007800;">DC</span>=dominio
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: Tiago Cruz
sn: Cruz
givenName: Tiago
initials: ti
distinguishedName: <span style="color: #007800;">CN</span>=Tiago Cruz,<span style="color: #007800;">CN</span>=Users,<span style="color: #007800;">DC</span>=dominio
instanceType: <span style="color: #000000;">4</span>
whenCreated: 20090427110042.0Z
whenChanged: 20090427190603.0Z
displayName: Tiago Cruz
uSNCreated: <span style="color: #000000;">555987</span>
....</pre></div></div>

<p>2-) Simulando o LDAP_AUTH do Squid na mão, passando na mesma linha usuário e senha desejado para ver se funciona bem:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;">$ <span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>squid<span style="color: #000000; font-weight: bold;">/</span>ldap_auth <span style="color: #660033;">-R</span> <span style="color: #660033;">-b</span> <span style="color: #ff0000;">&quot;dc=dominio&quot;</span> <span style="color: #660033;">-D</span> <span style="color: #ff0000;">&quot;cn=tiago <span style="color: #000099; font-weight: bold;">\
</span>cruz,cn=users,dc=dominio&quot;</span> <span style="color: #660033;">-w</span> <span style="color: #ff0000;">&quot;senha&quot;</span> <span style="color: #660033;">-f</span> <span style="color: #007800;">sAMAccountName</span>=tcruz <span style="color: #660033;">-h</span> 10.10.10.10
tcruz senhacorreta
OK
tcruz senhaerrada
ERR Success</pre></div></div>

<p>Lembrando que se você estiver usando <strong>Proxy Transparente</strong>, você deverá configurar o endereço do Proxy diretamente no navegador do usuário pois a autenticação não funcionará.</p>
<p>Se você não sabe se usa Proxy Transparente, seria algo mais ou menos assim:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;"># No squid:</span>
http_port <span style="color: #000000;">3128</span> transparent
&nbsp;
<span style="color: #666666; font-style: italic;"># No firewall:</span>
<span style="color: #7a0874; font-weight: bold;">echo</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">&gt;</span> <span style="color: #000000; font-weight: bold;">/</span>proc<span style="color: #000000; font-weight: bold;">/</span>sys<span style="color: #000000; font-weight: bold;">/</span>net<span style="color: #000000; font-weight: bold;">/</span>ipv4<span style="color: #000000; font-weight: bold;">/</span>ip_forward
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-A</span> POSTROUTING <span style="color: #660033;">-o</span> eth1 <span style="color: #660033;">-j</span> MASQUERADE
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-s</span> 10.10.10.0<span style="color: #000000; font-weight: bold;">/</span>255.255.255.0 <span style="color: #660033;">-p</span> tcp <span style="color: #660033;">--dport</span> <span style="color: #000000;">80</span> <span style="color: #660033;">-j</span> REDIRECT <span style="color: #660033;">--to-port</span> <span style="color: #000000;">3128</span></pre></div></div>

<p>A idéia é pegar todo o tráfego que vem da sua rede local com destino à porta 80/tcp e encaminhar para o squid na porta 3128/tcp, de forma transparente. Funciona muito bem, mas caso você queira autenticação será necessário mexer no browser no cliente.</p>
<p>Para fazer uma configuração <strong>automática</strong>, sugiro a utilização de um <strong>Script de Logon</strong> mais ou menos como este arquivo &#8220;todos.bat&#8221;:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">@</span><span style="color: #7a0874; font-weight: bold;">echo</span> off
net use f: \\server\shared
net use h: <span style="color: #000000; font-weight: bold;">/</span>home
regedit <span style="color: #000000; font-weight: bold;">/</span>s \\server\netlogon\proxy.reg</pre></div></div>

<p>Sendo que o <strong>proxy.reg</strong> seria algo mais ou menos assim:</p>

<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;">REGEDIT4
&nbsp;
<span style="color: #7a0874; font-weight: bold;">&#91;</span>HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings<span style="color: #7a0874; font-weight: bold;">&#93;</span>
<span style="color: #ff0000;">&quot;ProxyServer&quot;</span>=<span style="color: #ff0000;">&quot;10.10.10.1:3128&quot;</span>
<span style="color: #ff0000;">&quot;ProxyEnable&quot;</span>=dword:00000001
<span style="color: #ff0000;">&quot;EnableAutodial&quot;</span>=dword:00000000
<span style="color: #ff0000;">&quot;NoNetAutodial&quot;</span>=dword:00000000
<span style="color: #ff0000;">&quot;MigrateProxy&quot;</span>=dword:00000001</pre></div></div>

<p>Mais informações:<br />
- <a href="http://www.papercut.com/kb/Main/ConfiguringSquidProxyToAuthenticateWithActiveDirectory">Configuring Squid on Linux to authenticate with Active Directory</a><br />
- <a href="http://wiki.squid-cache.org/ConfigExamples/Authenticate/WindowsActiveDirectory">Configuring a Squid Server to authenticate off Active Directory</a><br />
- <a href="http://www.vivaolinux.com.br/artigo/Squid-autenticado-no-Active-Directory-com-Winbind/">Squid autenticado no Active Directory com Winbind</a><br />
- <a href="http://www.linuxman.pro.br/autenticando_o_squid_no_ad_via_ntlm.pdf">Autenticando o SQUID no Active Directory via NTLM</a><br />
- <a href="http://everlinux.com/artigos/samba3.html">SaMBa 3.x -> Tudo o que você precisa saber (e não tinha para quem perguntar <img src='http://everlinux.com/blog/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </a></p>
<p>Abraços e até a próxima! <img src='http://everlinux.com/blog/wp-includes/images/smilies/icon_cool.gif' alt='8)' class='wp-smiley' /> </p>
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