{"id":28,"date":"2014-05-24T02:51:15","date_gmt":"2014-05-24T02:51:15","guid":{"rendered":"http:\/\/107.170.191.119\/?p=28"},"modified":"2014-05-24T02:51:15","modified_gmt":"2014-05-24T02:51:15","slug":"lpic-2-dns-domain-name-server-207","status":"publish","type":"post","link":"https:\/\/arripio.com.br\/?p=28","title":{"rendered":"LPIC-2 DNS -Domain Name Server 207"},"content":{"rendered":"

Principal arquivo de configura\u00e7\u00e3o \/etc\/named.conf<\/strong> ou \/etc\/bind\/named.conf<\/strong><\/p>\n

Comando para for\u00e7a leitura de novas configura\u00e7oes rndc<\/strong><\/p>\n

type hint<\/p>\n

$TTL 1D<\/span>
@\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOA \u00a0 \u00a0 linux.dominio.com. \u00a0 \u00a0 \u00a0admin.linux.dominio.com. (<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02008260401 ;Serial<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a024h \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ;Refresh -> Tempo que o servidor aguarda entre atualiza\u00e7\u00f5es \u00a0<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02h \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ;Retry -> Tempo para realiza\u00e7ao de nova tentativa \u00a0de atualiza\u00e7\u00e3o<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03600000 \u00a0 \u00a0 \u00a0 ;Expire(1000h) ->tempo maxio para que servidor secund\u00e1rio responda como prim\u00e1rio<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01h) \u00a0 \u00a0 \u00a0 ;Minimum TTL ->tempo valido para o segundo servidor manter em cache os dados conultados a partir desse dns<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0NS\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0localhost.<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0PTR\u00a0\u00a0\u00a0\u00a0 localhost.<\/span><\/p>\n

 <\/p>\n

 <\/p>\n

Tipos de registro:<\/span><\/p>\n

\u00a0A:<\/strong> \u00a0<\/span>\u00c9 o tipo de registro mais importante, ele cont\u00e9m o endere\u00e7o de algum host.\u00a0<\/span>

MX:<\/strong>\u00a0<\/span>Especifica o nome de uma m\u00e1quina preparada para aceitar e-mails em uma zona.\u00a0<\/span>

NS:<\/strong>\u00a0<\/span>Estes registros especificam servidores de nomes.\u00a0<\/span>

CNAME<\/strong>:\u00a0<\/span>Permitem a cria\u00e7\u00e3o de nomes alternativos, ou seja, \u00e9 poss\u00edvel criar um alias(apelido) para um host da zona.\u00a0<\/span><\/p>\n

PTR<\/strong>:\u00a0Essa entrada \u00e9 geralmente usada para associar nomes \u00e0 endere\u00e7os IP, pesquisas estas conhecidas como pesquisas reversas.\u00a0<\/span><\/p>\n

Ferramentas de consulta a DNS:<\/p>\n

dig \/host\/\u00a0nslookup<\/strong><\/em><\/p>\n

DNSSEC \u00a0-> dnssec-keygen<\/strong><\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Principal arquivo de configura\u00e7\u00e3o \/etc\/named.conf ou \/etc\/bind\/named.conf Comando para for\u00e7a leitura de novas configura\u00e7oes rndc type hint $TTL 1D@\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOA \u00a0 \u00a0 linux.dominio.com. \u00a0 \u00a0 \u00a0admin.linux.dominio.com. (\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02008260401 ;Serial\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a024h…
Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[3],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pazGcY-s","jetpack-related-posts":[{"id":31,"url":"https:\/\/arripio.com.br\/?p=31","url_meta":{"origin":28,"position":0},"title":"LPIC-2 Web Service 208","date":"24 Maio, 2014","format":false,"excerpt":"Arquivo de configura\u00e7ao: \u00a0\/etc\/apache2\/apache2.conf \u00a0 ServerRoot \"\/etc\/apache2\" caminho de configura\u00e7\u00e3o dos arquivos do apache Timeout 300 Tempo m\u00e1ximo em segundos que o apache aguarda por resposta do cliente KeepAlive On Uso de diversas requisi\u00e7\u00f5es dentro da mesma conex\u00e3o MaxKeepAliveRequests 100 Numero m\u00e1ximo que o usu\u00e1rio poder\u00e1 fazer dentro da mesma\u2026","rel":"","context":"In "Cerifica\u00e7\u00e3o LPIC-2 202"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":42,"url":"https:\/\/arripio.com.br\/?p=42","url_meta":{"origin":28,"position":1},"title":"LPIC-2 Compartilhamento de arquivo 209","date":"24 Maio, 2014","format":false,"excerpt":"Configura\u00e7\u00e3o do Servidor SAMBA: [global] netbios name = servidor workgroup =\u00a0ArripioLinux security = user obey pam restrictions = yes encrypt passwords = no os level = 10 guest account = nobody server string = servidor da rede local master = true domain master = false [homes] comment = Diret\u00f3rios de\u2026","rel":"","context":"In "Cerifica\u00e7\u00e3o LPIC-2 202"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":79,"url":"https:\/\/arripio.com.br\/?p=79","url_meta":{"origin":28,"position":2},"title":"Lpic-2 202","date":"9 Junho, 2014","format":false,"excerpt":"Cuidados: 1- OpenVPN: Which port is used for OpenVPN = 1194 2- Which DNS software are used: dnsmasq, djbdns, PowerDns 3- The comand \"iptables\" for ipv6 = ip6tables 4- Which table use the follooing chains: INPUT, OUTPUT and FORWARDING = filter 5- What is the configuration file of vstpd =\u2026","rel":"","context":"In "Automa\u00e7\u00e3o"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":73,"url":"https:\/\/arripio.com.br\/?p=73","url_meta":{"origin":28,"position":3},"title":"Administra\u00e7\u00e3o de Rede 210","date":"9 Junho, 2014","format":false,"excerpt":"DHCP host ArripioLinux{ hardware ethernet 00:00:00:00:00:00; fix-address 10.1.0.3; } option domain-name-servers option domain-name \"Arripio.net\"; Tipo de de autentica\u00e7\u00e3o PAM account auth password session Controle do PAM requisite -> autentica\u00e7\u00e3o \u00e9 imediata negada, no caso de negativa do m\u00f3dulo required ->autentica\u00e7\u00e3o recusada no caso de negativa do m\u00f3dulo , mas consultar\u00e1\u2026","rel":"","context":"In "Automa\u00e7\u00e3o"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":84,"url":"https:\/\/arripio.com.br\/?p=84","url_meta":{"origin":28,"position":4},"title":"Servi\u00e7o de E-mail 211","date":"9 Junho, 2014","format":false,"excerpt":"SMTP- MTA -\u00a0Postfix, Sedmail, qmail, Exim POP e IMAP - MDA Currier Dovecot MUA - Thunderbird Evolution SendMail aquivos de configura\u00e7\u00e3o \/etc\/mail Servidor Exim arquivos de configura\u00e7\u00e3o \/etc\/default\/exim4 Alias no postfix e sendmail \u00a0 \u00a0\/etc\/aliases \u00a0 usu\u00e1rio: usu\u00e1rios_a_ser_encaminhados \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2026","rel":"","context":"In "Automa\u00e7\u00e3o"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":97,"url":"https:\/\/arripio.com.br\/?p=97","url_meta":{"origin":28,"position":5},"title":"LPIC-2 202 PAM Authentication","date":"29 Junho, 2014","format":false,"excerpt":"Arquivos de configura\u00e7\u00e3o O prop\u00f3sito do do projeto PAM \u00e9 separar a concess\u00e3o de privil\u00e9gios nos aplicativos do desenvolvimento de esquemas de autentica\u00e7\u00e3o apropriados e seguros. Isto \u00e9 realizado fornecendo-se uma biblioteca de fun\u00e7\u00f5es utilizada pelas aplica\u00e7\u00f5es para solicitar a autentica\u00e7\u00e3o de usu\u00e1rios.\u00a0 As bibliotecas PAM s\u00e3o configuradas no arquivo\u00a0\/etc\/pam.conf\u00a0ou\u2026","rel":"","context":"In "Automa\u00e7\u00e3o"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/arripio.com.br\/index.php?rest_route=\/wp\/v2\/posts\/28"}],"collection":[{"href":"https:\/\/arripio.com.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arripio.com.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arripio.com.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/arripio.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28"}],"version-history":[{"count":0,"href":"https:\/\/arripio.com.br\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions"}],"wp:attachment":[{"href":"https:\/\/arripio.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arripio.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arripio.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}