Introduction to the DNS system
Purpose of naming
Names and addresses in general
Naming History
DNS
DNS Features: Global Distribution
DNS Features: Loose Coherency
DNS Features: Scalability
DNS Features: Reliability
DNS Features: Dynamicity
DNS Concepts
Concept: DNS Names 1
Concept: DNS Names 2
How names appear in the DNS
Concept: Resource Records
Concept: DNS Names 3
Concept: Domains
Delegation
Concept: Zones and Delegations
Concept: Name Servers
Concept: Name Servers
authoritative name server
Concept: Name Servers
recursive server
Concept: Resolvers
Concept: Resolving process & Cache
Concept: Resource Records (more detail)
Example: RRs in a zone file
Resource Record: SOA and NS
Resource Record: SOA
Concept: TTL and other Timers
Places where DNS data lives
To remember...
What have we learned
What are we about to learn
Writing a zone file.
First attempt
The SOA record
Authoritative NS records and related A records
Other ÔAPEXÕ data
Intermezzo: MX record
Other data in the zone
Zone file format short cuts
nice formatting
Zone file format short cuts: repeating last name
Zone file format short cuts: default TTL
Zone file format short cuts: ORIGIN
Delegating a zone
(becoming a parent)
Concept: Glue
Concept: Glue (continued)
Delegating disi.ripe.net. from ripe.net.
Becoming a child
In general