Definitive DNS for engineers

Description

This three-day hands on DNS training course studies both the UNIX BIND and the Microsoft (MS DNS) implementations. The course starts with the big picture of how DNS works, then client configuration. Primary and secondary servers are then configured, progressing to DDNS, subdomains and security issues. Hands on sessions follow all sections ensuring that troubleshooting techniques are used throughout the course. Students choose whether to use Windows or UNIX for the hands on sessions.

What will you learn

DNS training course details

Technical staff wanting to learn DNS including:
Network personnel
System administrators.

UNIX Fundamentals (or Windows knowledge).
TCP/IP foundation for engineers.

3 days

Hostnames, Name resolution, host files, host file problems, What is DNS? The DNS namespace,
TLDs, gTLDs, registering domains, Nameservers,
how DNS works.
Hands on Testing DNS servers
on the Internet.

Ways to use DNS, dynamic and static
configuration, multiple nameservers, domain name,
searchlist, resolution issues, testing the
configuration.
Hands on Client configuration.

Implementations, Microsoft, BIND, daemons and
services, installation, starting and stopping servers.

Hands on Setting up a DNS server.

What is a zone, Zone file overview, Forward zones,
Reverse zones, Resource records, A records, PTR,
CNAME, Root hints, local zone file. BIND and
Microsoft configuration.
Hands on Server
configuration files.

MX records, Mail server load balancing, SPF, SRV
records, VoIP and SRV, Microsoft and SRV,
NAPTR.
Hands on Testing records with dig and
nslookup.

DNS server types, Server resilience, Slaves, Zone
transfers, SOA records, Serial numbers,
recommendations, polling based zone transfers,
NOTIFY, AD integration, DNS caching, Negative
caching, TTL, Caching only servers.
Hands on
Masters, slaves and zone transfers.

The DNS stack, DNS port numbers, DNS queries,
The DNS header, header section format, question
format, other section format.
Hands on
Troubleshooting DNS with Wireshark.

DHCP, DDNS, IXFR, WINS integration.
Hands on
Dynamic DNS.

Root servers, root server selection, Authority,
delegation, NS records, subdomain with and
without delegation, reverse delegation.
Hands on
Delegation, setting up a subdomain server.

Restricting queries, DNS and firewalls, Split DNS,
forwarders, internal root servers, the use of proxy
servers, DNSSEC, TSIG.
Hands on Hardening a
DNS server.

What is IPv6, IPv6 addressing, IPv6 DNS issues,
AAAA, IPv6 reverse delegation.

Problem solving, DNS troubleshooting, Zone file
checking, Some common errors, Log files, tools,
nslookup, dig, host, DNS design, performance,
load balancing.
Hands on Putting it all together.

Useful books, Internet sites, RFCs.

What is ENUM, How ENUM works, NAPTR.