IV Needle » dns http://www.ivneedle.com Injecting Tech into the Vein Fri, 06 Aug 2010 15:38:43 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 DNS Interrogation http://www.ivneedle.com/2009/05/dns-interrogation/ http://www.ivneedle.com/2009/05/dns-interrogation/#comments Fri, 08 May 2009 03:30:00 +0000 Heavymeddler http://www.ivneedle.com/?p=65 DNS Record Types (http://en.wikipedia.org/wiki/List_of_DNS_record_types)

  • A: IPv4 Address record
  • CNAME: Canonical Name (alias)
  • MX: Mail Exchange record (mail servers for domain)
  • NS: Name Server record (authoritative name server)
  • PTR: Pointer for inverse lookups record (reverse record)
  • SOA: Start of Authority record (server authoritative for zone)
  • TXT: Text record (arbitrary text string - often used vs. spam)
  • HINFO: Host Information record (formerly system type) - rarely used
  • RP: Responsible Person record (info of human) - rarely used
  • SRV: Service Locator record (host/port info - used for newer protocols instead of creating proto-specific records like MX) - rarely used

nslookup (+interactive mode)

  • server
  • set
  • - type=any
  • - [no]recurse
  • ls -d [> filename]
  • view

DNS Cache Snooping - Luis Grangia (http://www.sysvalue.com/ResourcesUser/docs/dns_cache_snooping.pdf)

dig [@global-server [domain] [type]

  • dig @ -t AXFR (All zone transfer)
  • dig @ -t IXFR= (Incremental zone transfer, retrieving records since SOA serial number was N)
  • +[no]recursive (recursive searches default)
  • Dig for Windows (http://www.nscan.org/dig.html)

DNSstuff.com & DNS Query Websites

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