DNS

DNS is integrated with Active Directory

DNS Server Properties

• Forwarders - Forwarders are DNS servers that this server can use to resolve DNS queries for records that this server cannot resolve
• Advanced Server option
  • Disable recursion (also disables forwarders)
  • Enable round robin
• Root Hints
  • A.ROOT-SERVERS.NET. - M.ROOT-SERVERS.NET.

Forward Lookup Zones

• Forward Lookup Zones\corp.alphabook.cn\_tcp
  • _gc
  • _kerberos
  • _kpasswd
  • _ldap

Reverse Lookup Zones

• 0.16.172.in-addr.arpa

Conditional Forwarders

• For specific DNS Domain, the DNS queries wiil forward to the corresponding DNS server

DNS Record

• A or AAAA
• Alias (CNAME)
• Mail Exchanger (MX)
• Pointer (PRT)
• Service Location (SRV)
  • _autodiscover._tcp.corp.alphabook.cn

nslookup

• nslookup
•  ?
• set type=X (A, AAAA, A+AAAA, ANY, CNAME, MX, NS, PTR, SOA, SRV)
  • set type=mx
  • alphabook.cn
  • set type=srv
  • _autodiscover._tcp.corp.alphabook.cn
  • set type=srv
  • _ldap._tcp.corp.alphabook.cn