O'Reilly Answers

Topics: DNS   

• How to use and understand "whois" in its many forms

  

  By tcpiplab

  The whois command line utility, available on all modern Unix and Linux variants, can be a fast, concise, and scriptable way to identify unknown and distant hosts, networks, and even netadmins. By the ...

  16 October 2009 - 05:19 PM | 0 Comments
  Tags:

  • whois
  • ip addresses
  • shell
  • dns
  • routing
  • bgp

  2Votes

  0Alternates

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• How to look up records with dig

  

  By cricketliu

  Specify the domain name you want to look up, the record type you're interested in (unless it's A, the default), and the domain name or IP address of the name server you want to query (unless it's ...

  15 September 2009 - 12:04 PM | 0 Comments
  Tags:

  • dig
  • DNS
  • domain
  • nslookup

  1Vote

  0Alternates

  0Comments

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• Finding a syntax error in a zone data file

  

  By cricketliu

  Find the log messages from the most recent restart or reload of the name server, reloading again if necessary. Then look for a message indicating the line of the zone data file that contains t...

  15 September 2009 - 11:56 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • zone
  • named

  1Vote

  0Alternates

  0Comments

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• How to find a syntax error in a named.conf file

  

  By cricketliu

  If you suspect you have a syntax error in named.conf, check the name server's syslog output to see if named logged any error messages the last time you started or reloaded it. Look for a message l...

  15 September 2009 - 11:43 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • named
  • rndc

  1Vote

  0Alternates

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• How to configure a resolver to append multiple domain names to arguments

  

  By cricketliu

  On a BIND resolver, configure a search list by adding a search directive to the resolv.conf file. You can specify up to six domain names as arguments to the search directive, in the order in which...

  15 September 2009 - 11:10 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • resolver
  • resolv.conf

  1Vote

  0Alternates

  0Comments

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• How to configure a resolver to query a remote name server

  

  By cricketliu

  On a host running a BIND resolver, add a nameserver directive to the resolv.conf file. The resolv.conf file (note that there's no "e" on the end of "resolv") usually lives in the /etc directory;...

  15 September 2009 - 11:06 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • resolv.conf
  • resolver

  1Vote

  0Alternates

  0Comments

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• How to handle Active Directory with a name sever

  

  By cricketliu

  If you want to allow your Active Directory Domain Controllers to register their SRV records using dynamic update, make note that there are a number of different solutions to this pr...

  15 September 2009 - 10:59 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • Active Directory
  • zone
  • Windows

  0Votes

  0Alternates

  0Comments

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• How to restrict the queries of a name server answers

  

  By cricketliu

  If you want to restrict the queries a name server answers, use the allow-query substatement to restrict the queries to which the name server responds. allow-query can be used as ...

  15 September 2009 - 10:34 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • ACL
  • TSIG

  0Votes

  0Alternates

  0Comments

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• How to secure zone transfers

  

  By cricketliu

  If you want to secure zone transfers from a name server, use the allow-transfer substatement to specify the addresses of slave name servers allowed to transfer zones. Or, even be...

  15 September 2009 - 10:27 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • zone
  • TSIG
  • ACL

  1Vote

  0Alternates

  0Comments

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• How to configure a name server to work with a firewall (or vice versa)

  

  By cricketliu

  If you want to configure a name server to work through a firewall, or configure a firewall to work with a name server, configure your firewall to pass the UDP and TCP traffic that a...

  15 September 2009 - 10:20 AM | 0 Comments
  Tags:

  • DNS
  • BIND
  • TCP
  • UDP
  • configure

  1Vote

  0Alternates

  0Comments

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