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.
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
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
Hands on Server configuration files.
MX records, Mail server load balancing, SPF, SRV
records, VoIP and SRV, Microsoft and SRV,
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,
Hands on Putting it all together.
Useful books, Internet sites, RFCs.
What is ENUM, How ENUM works, NAPTR.
"Able to customise course which was excellent."
"Material was interchanged well with live demo."
This structured course uses Instructor Led Training to provide the best possible learning experience. Small class sizes ensure students benefit from our engaging and interactive style of teaching with delegates encouraged to ask questions throughout the course. Quizzes follow each major section allowing checking of learning. Hands on sessions are used throughout to allow delegates to consolidate their new skills.