Domain Name System (DNS)

None

This training course looks at implementing secure systems, followed by operational security management, incident management and information risk management to manage emerging cyber threats

Audience

ICT technical professionals that work on the day-to-day operations on the networks and security management.

Objectives:

To describe the architecture of DNS, explain how DNS works and install, configure, maintain and troubleshoot DNS.

• Hostnames, Name resolution, host files, host file problems, What is DNS? The DNS namespace, TLDs, gTLDs, registering do-mains, Nameservers, how DNS works
• Ways to use DNS, dynamic and static confi-guration, multiple nameservers, domain name, searchlist, resolution issues, testing the configuration
• MX records, Mail server load balancing, SPF, SRV records, VoIP and SRV, Microsoft and SRV, NAPTR
• DNS server types, Server resilience, Slaves, Zone transfers, SOA records, Serial numbers, recommenda-tions, polling based zone transfers, NOTIFY, AD integration, DNS caching, Negative caching, TTL, Caching only servers
• The DNS stack, DNS port numbers, DNS queries, The DNS header, header section format, question format, other section format, DHCP, DDNS, IXFR, WINS integration
• What is IPv6, IPv6 addressing, IPv6 DNS is-sues, 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