[Autogenerated] Hello everyone.
Thank you for joining me in this course on network protocols for
security specifically DNS domain name system or DNS is a
complicated protocol with quite a bit of depth.
I wanna get that out of the way first.
This course is not nearly long enough to make you a DNS expert,
but you might say, wait, I thought DNS was simple.
Its fundamental concepts are so, don't worry,
you are in the right place but don't be surprised when you're still
learning things about DNS late into your cybersecurity career.
This course will walk through the core functionality of the protocol and some
concepts that every security practitioner should be aware of.
Let's begin with the basics.
When you browse to a webpage like plurals site dot com.
The computer needs to convert the domain name into an IP address.
DNS is the protocol that accomplishes this DNS involves queries and answers.
You will make a query to resolve a web address in response your DNS server,
which is typically the Active Directory server in an enterprise environment
will respond with an answer called a resource record.
There are many types of DNS records and formats to
understand this protocol better.
Let's begin by generating some DNS traffic for analysis.