- [Jungwoo] We often hear about security breaches
involving organizations that lose millions of dollars.
A lot of these cybersecurity incidents
stem from the vulnerabilities in computer networks.
If your network is down, you cannot get any work done.
Therefore, network security should be a top priority,
which starts with developing an overall understanding
of fundamental network security concepts
and essential tools you can adopt immediately
without worrying about the cost.
You need to learn how to set up
different types of firewalls,
analyze packets and network protocols,
conduct intrusion detection and prevention,
and monitor your network using various tools.
I'm Jungwoo Ryoo.
I'm excited to share the knowledge
I've gained over the years as a professor,
researcher, and practicing network engineer.
Now let's get started with protecting
your network with open source software.