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.
Join our public courses in our Bahrain facilities. Private class trainings will be organized at the location of your preference, according to your schedule.
Bahrain has positioned itself as the pioneering fintech and cloud capital of the Middle East, with Manama hosting the region’s first dedicated fintech hub, Bahrain FinTech Bay. As the first country in the region to adopt a 'Cloud First' policy, Bahrain has attracted global giants like AWS to establish massive data center infrastructures on its shores. The University of Bahrain and various national initiatives are focused on cultivating a workforce that is highly proficient in blockchain, open banking, and cybersecurity. Our IT education services in Bahrain are tailored to this innovation-driven market, offering advanced curriculum in Cloud Engineering, DevOps, and Information Security. We empower professionals in the Kingdom to take the lead in a digital-first economy that consistently sets the benchmark for regulatory technology and financial innovation across the Gulf.