Introduction:

DNS is probably one of the most crucial applications on the modern Internet. Without it the names we commonly use to refer to servers, web-sites, e-mail servers and so on would not exist. Despite DNS being in wide-spread use across the Internet, it is often misunderstood and incorrectly configured. This course teaches the operation and management of DNS in detail.

Audience:

This course is ideal network administrators who are responsible for DNS, either on UNIX, Linux or Windows platforms.

Prerequisites:

A good knowledge of general networking concepts is assumed and TCP/IP in particular.

Customize it:

This 2-3-day DNS course will be customized to your needs and specifications. Enowireless will assist you in identifying those needs and specifications. A word to the wise, there are many vendors of wireless training. They will typically have a broad and general course, one size fits all, already developed and just put your organization’s name on the title slide. This minimizes their effort and time investment. At Enowireless, every course is made to your exact and exacting specifications. We help you ensure what you are getting is what you really need even if at the beginning you weren’t too sure of what that was. We fit the class to your needs. We never fit you into our “standard”, one size fits all, class.

Objectives:

On completing this course, you will be able to: Install and build BIND & Microsoft DNS Set-up a DNS Client Configure a DNS server on your chosen platform (UNIX, Linux or Windows) Create master zone files for forward and reverse lookups. Delegate name space to sub-domains. Interrogate the DNS system using dig, hosts and nslookup. Debug DNS configurations. Set-up Master, Slave, Caching only, and forwarding DNS servers. Configure basic DNS security. Troubleshoot DNS. Set-up DNS servers on the Internet.

Course Outline

History of Naming Services TCP/IP Recap The Internet HOSTS.TXT Introduction of DNS Other name services (NIS, WINS, LDAP) The Domain Name System Domain names FQDN The DNS hierarchy The DNS root Domains & subdomains Resolvers DNS Servers Resolving a name Configuring DNS Clients UNIX & Linux The service switch file resolv.conf Windows NT, 2000 & .NET The local domain name The domain search list Defining nameservers Configuring via DHCP Basic tools; nslookup, dig & hosts Network capture of DNS DNS Server Basics Server operation Resource Records Master files Masters and Slaves Zones and delegation Zone Transfers Query Types Caching Forwarding and Slave Servers Configuring a DNS Server Basics - software configuration Basics - create master files BIND Server Configuration Creating master files in BIND Basic Resource Records SOA, A, PTR, CNAME, MX, HINFO loopback, localhost zones The root hints or cache file Windows Server Configuration Creating Zones in MS DNS Adding RR in MS DNS Basic BIND options Basic MS DNS options Monitoring DNS DNS Basic Security Keeping up to date Multiple servers Using firewalls/filters ACLs Securing Recursive queries Securing Zone Transfers Split horizons DNS and firewalls Dynamic DNS The operation of DDNS NOTIFY messages Configuring DDNS Incremental Zone transfers Integration with DHCP Use in Active Directory Security issues DNS TSIG TSIG background Configuration of TSIG DNSSEC Cryptographic techniques RR Types Chain of trust Creating keys Signing Zones Using the key Resigning a Zone DNS and Active Directory Active Directory basics Domain names Domain controller RRs DNS as a service locator Secure dynamic updates Migrating from BIND to MS DNS DNS & IPv6 AAAA, PTR, A6 & DNAME RRs ip6.arpa. & ip6.int. A6 chains IPv6 in BIND and MS DNS Hands-On includes: Installing and building BIND Set-up a DNS client Interrogating DNS Network monitoring of DNS and understanding DNS messages Creating Zones and delegating authority Setting up mail server MX RR Tuning DNS Using DNSSEC and TSIG Implementing Dynamic DNS