Protecting Networks


Security Concepts

Video — 00:05:57

In this episode, Joe goes over the general types of security threats to a network.

Defense in Depth

Video — 00:05:17

Delving further into protecting your network, Joe explains some methods to protect against the bad guys.

Rogue DHCP Servers

Video — 00:03:51

The lone rogue DHCP server can be a real nuisance. Joe talks about what it is and how to stop it.

Denial of Service (DoS)

Video — 00:09:53

In this episode, Joe goes over a Denial-of-Service attack.

On-Path and Spoofing Attacks

Video — 00:22:31

In this episode, Joe explains the man-in-the-middle attack or more commonly known as an on-path attack​.

Password Attacks

Video — 00:06:24

In this episode, Joe dives into the various types of password attacks.

VLAN Hopping

Video — 00:06:10

Joe reviews some other types of exploits and how to harden devices to protect against them.

System Life Cycle

Video — 00:04:29

Joe reviews the methods for disposing of old equipment.


Video — 00:06:12

In this episode, Joe talks about types of malware and what they do.

Social Engineering

Video — 00:07:39

In this episode, Joe explores social engineering attacks such as dumpster diving, shoulder surfing, and phishing.

Common Vulnerabilities

Video — 00:03:12

In this episode, Joe sheds light on common vulnerabilities and exposures as well as zero-day.

Physical Security

Video — 00:12:34

In this episode, Joe explores preventative controls, such as guards and fences.

Network Hardening

Video — 00:08:01

Joe reviews some other types of exploits and how to harden devices to protect against them.

Demilitarized Zone (DMZ)

Video — 00:05:21

Mike shows us techniques to use and configure firewalls.

Introduction to Firewalls

Video — 00:04:22

In this episode, Mike shows attacks where bad actors function between encrypting hosts.


Video — 00:10:03

Mike shows us how to keep bad guys from getting into your network from the outside.

Meet the author

Mike Meyers, affectionately called the “Alpha Geek,” is the industry’s leading authority on CompTIA certifications. He is the president and co-founder of Total Seminars, LLC, a provider of PC and network repair seminars, books, videos and courseware for thousands of organizations throughout the world. Mike has been involved in the computer and network repair industry since 1987 as a technician, instructor, author, consultant and speaker. He has sold over a million IT and certification books, including the best-selling CompTIA A+ Certification All-in-One Exam Guide and CompTIA Network+ Certification All-in-One Exam Guide. He has personally taught thousands of students, including U.S. senators, U.S. Supreme Court Justices, members of the United Nation, every branch of the U.S. Armed Forces, many branches of the Department of Justice, hundreds of corporate clients and academic students at every level.

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