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Firewalls: Relationships Among Firewall Perimeters
In this learning activity you'll examine how firewalls block viruses by discussing trusted, semi-trusted, and untrusted networks.
By Joseph Wetzel Douglas Tabbutt
Firewall: Stateful Packet Inspection
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.
By Joseph Wetzel Douglas Tabbutt
Firewalls: Packet Filters
Firewall: Gateway Servers
In this animated object, learners examine how a gateway server operates.
By Joseph Wetzel Douglas Tabbutt
Firewall: Network Address Translation/Port Address Translation
In this learning activity you'll examine how network address translation works.
By Joseph Wetzel Douglas Tabbutt
Using Fire Extinguishers
By the end of this learning activity, you’ll know how to understand, use, and maintain different types of fire extinguishers.
Choosing the Right Fire Extinguisher
Explore the different types of fires and the extinguishers used for each type.
Pacific Rim
Students read about the world's active volcanoes that make up the "Ring of Fire." In an interactive exercise, they locate these volcanoes on maps.