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.
TCP/IP foundation for engineers.
By the end of the course delegates will be able to:
What is DNS?
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.
DNS clients
Ways to use DNS, dynamic and static configuration, multiple nameservers, domain name, searchlist, resolution issues, testing the configuration.
Hands on Client configuration.
DNS server software
Implementations, Microsoft, BIND, daemons and services, installation, starting and stopping servers.
Hands on Setting up a DNS server.
DNS zone files
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.
NS and applications
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 slaves and other servers
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 protocol
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.
Dynamic DNS
DHCP, DDNS, IXFR, WINS integration.
Hands on Dynamic DNS.
Subdomains
Root servers, root server selection, Authority, delegation, NS records, subdomain with and without delegation, reverse delegation.
Hands on Delegation, setting up a subdomain server.
DNS security
Restricting queries, DNS and firewalls, Split DNS, forwarders, internal root servers, the use of proxy servers, DNSSEC, TSIG.
Hands on Hardening a DNS server.
DNS and IPv6
What is IPv6, IPv6 addressing, IPv6 DNS issues, AAAA, IPv6 reverse delegation.
Troubleshooting DNS
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.
Summary
Useful books, Internet sites, RFCs.
Appendix: ENUM
What is ENUM, How ENUM works, NAPTR.
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Australia’s technology scene is a powerhouse of innovation in the Southern Hemisphere, with Sydney, Melbourne, and Brisbane acting as world-class centers for fintech, cloud computing, and software development. The nation’s digital economy is supported by top-tier academic institutions like the University of New South Wales (UNSW) and the University of Melbourne, which foster a culture of research excellence in Cybersecurity and Artificial Intelligence. Australia has become a global leader in mining-tech and sustainable energy software, requiring a workforce that is proficient in the latest DevOps and Data Science frameworks. Our training solutions in Australia are designed to meet these high industry standards, offering specialized certifications that empower professionals to lead digital transformation projects across the Oceania region. We provide the technical expertise necessary to excel in a highly competitive and digitally integrated market that consistently attracts global tech investment.