Implementing DNS

How to understand and implement DNS in a multi-vendor, commercial environment

• 2 days • £1540/$1960 • world-wide

You will learn:

Install and build BIND & Microsoft DNS
Set-up DNS Clients
Configure a DNS server on your chosen platform.
Create master zone files for forward and reverse lookups.
Delegate domain 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.

DNS Course Benefits

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.

Who should attend?

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

This course is suitable for BIND DNS administrators and Windows DNS administrators.

A knowledge of general networking concepts is assumed.

Course Details

£1540/$1960
2 days
PDF

Formats

Virtual Classroom
Public Course
On-site Course
Modular Course
Bespoke Course

Platforms

Linux (RHEL)
Linux (Centos)
Linux (Suse)
Linux (Ubuntu)
Linux (Debian)
Linux (Fedora)
Linux (all distributions)
Unix
FreeBSD
AIX
HP-UX
Solaris
Cisco IOS
Windows Server 2016
Windows 10
Windows 8.1
Windows Server 2012 R2
Windows 8
Windows Server 2012
Windows 7
Windows Server 2008
Windows Vista
Windows Server 2003
Windows Longhorn
Windows XP
Windows 2000
Windows NT
HP Routers
HP Switches
Juniper Routers
Juniper Switches

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
DNS Resolvers
DNS Servers
Resolving a domain 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 DNS nameservers
Configuring DNS using DHCP
Basic tools; nslookup, dig & hosts
Network capture of DNS

DNS Server Basics

DNS Server operation
DNS Resource Records
Master zone files
Master & Slave Name Servers
Zones and delegation
Zone Transfers
DNS Query Types
Caching Resource Records
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
Configuring MS DNS Server
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 DNS servers
Using firewalls/filters
BIND 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
DDNS in Active Directory
DDNS Security issues

DNS TSIG

TSIG background
Configuration of TSIG

DNSSEC

Cryptographic techniques
DNSSEC RR Types
DNSSEC chains of trust
Creating keys
Signing Zones with DNSSEC
Using the key
Resigning a Zone

DNS and Active Directory

Active Directory basics
Domain names
AD 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

Practicals are run on a mixture of Linux and Windows, platforms. Delegates will have the opportunity to choose their preferred platform when booking.

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

All our trainers are practising DNS consultants with extensive experience with both BIND DNS and MS DNS servers.

Locations

Our courses are available world-wide in our virtual classrooms accompanied by virtual labs. We also deliver on-site training and public training at venues around the world.

Please contact us if you are looking for training in your area.

Aberdeen, Scotland, UK
Basingstoke, England, UK
Edinburgh, Scotland, UK
Glasgow, Scotland, UK
Inverness, Scotland, UK
Leeds, England, UK
London, England, UK
Manchester, England, UK
Sheffield, England, UK
Europe - various locations
Ljubljana, Slovenia
Malaysia - various locations
Boston, USA
San Francisco, USA
New York, USA
Washington DC, USA
USA - various locations