Professor Messer

CompTIA Network+ N10-004: 6.6 – Common Security Threats

CompTIA Network+ N10-004 /

The security of the network is a never-ending struggle against the bad guys. In this video, you’ll learn about the most common security threats and what you can do to protect your network resources. We’ll discuss denial of service attacks, viruses, worms, man in the middle attacks, rogue access points, social engineering, and phishing. We’ll also show you how policies and procedures, user training, and patching can help mitigate these security problems in your network.

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CompTIA Network+ N10-004: 6.4 – User Authentication

CompTIA Network+ N10-004 /

During a normal day, we are constantly authenticating our user credentials to web sites, file servers, and other network resources. As with most technologies, there’s more than one way to perform these authentications. In this video, you’ll learn what’s happening over the wire and become familiar with PKI, Kerberos, AAA, network access control technologies, CHAP, EAP, and much more.

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What happened to my wireless signal?

CompTIA A+ Pop Quizzes /

A client’s laptop has recently had its internal mini-PCI wireless adapter card replaced. Although the drivers for the card load without any errors and the Windows Device Manager shows the card working properly, the wireless card management software shows very low signal strength. The wireless card keeps dropping its wireless connection and will not maintain a consistent network link. What is the most likely reason for this problem?

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CompTIA Network+ N10-004: 6.2 – Firewalls

CompTIA Network+ N10-004 /

Firewalls are one of the most fundamental security components in our modern networks, but not all firewalls are created equally. In this module, you’ll learn about common features of modern firewalls, such as network-layer and application-layer firewalls, stateful vs. stateless operation, content filtering, signature identification, and zone-based security.

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