Man in the Middle Attacks with ARP Poisoning
By Joseph Wetzel
In this learning activity you'll identify Man-in-the-middle attacks and discuss how they affect network security.
Virtual Private Networks (VPN)
In this learning activity you'll explore how VPN is used to create a secure connection between two networks.
Subtracting Binary Numbers by Adding the 2's Complement
By Kevin Ritzman
In this learning activity you'll solve three binary subtraction problems using the 2's complement method.
Firewall: Stateful Packet Inspection
By Joseph Wetzel, Douglas Tabbutt
In this learning activity you'll examine a stateful packet inspection firewall that keeps track of legitimate Internet service requests, also known as dynamic packet filtering.
How the Ethernet Works
By Terry Bartelt
In this learning activity you'll explore how computers connected on a network use Ethernet technology.
In this learning activity you'll identify TCP and UDP port states and how they behave during interaction.
The Ethernet Frame
Learners view the seven segments of an Ethernet frame and the types of information each represents.
In this learning activity you'll examine how a large computer network is configured.
CRC – Cyclic Redundancy Check
By Dawn Rohm
In this learning activity, you’ll be introduced to what the CRC is, the technology behind it, and how it’s performed.
How Switches Increase Speed
In this learning activity you'll observe how switches are used in local area networks to increase data transmission speeds.
Components of a Data Center
In this learning activity you'll describe the typical components of a data center.
In this learning activity, you'll examine the different ways in which computers and other equipment are physically connected in local area networks and the advantages and disadvantages of each topology.
IP Addressing and Subnetting
In this learning activity you'll review how a local area network computer uses a subnet mask to determine if its message is intended for a computer on the same network or on a remote network.
The IP Address Format
In this learning activity you'll examine the format of an IP address and interpret the octet by converting between decimal and binary numbers.
You'll be introduced to the Go-Back-N ARQ, learn what it is, and find out how it's used to keep track of data sent between networked computers.
Learners consider the most common types of electromagnetic waves and the kinds of hardware used in a wireless network. A short quiz completes the activity.
Firewall: Network Address Translation/Port Address Translation
In this learning activity you'll examine how network address translation works.
Understanding Cloud Service Types
By Jeff Sonnleitner
You'll explore the three main services of cloud computing: Software as a service, Platform as a Service, and Infrastructure as a Service.
Dynamic Host Configuration Protocol
In this learning activity you'll examine the software operation Dynamic Host Configuration Protocol (DHCP), which automatically performs TCP/IP configurations.
Firewalls: Packet Filters
In this learning activity you'll create a packet filter.
By Dennis Fontaine, Terry Bartelt
In this learning activity you'll explore bandwidth.