Firewall: Gateway Servers
By Joseph Wetzel, Douglas Tabbutt
In this animated object, learners examine how a gateway server operates.
Firewall: Network Address Translation/Port Address Translation
In this learning activity you'll examine how network address translation works.
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.
Firewalls: Packet Filters
In this learning activity you'll create a packet filter.
Firewalls: Relationships Among Firewall Perimeters
In this learning activity you'll examine how firewalls block viruses by discussing trusted, semi-trusted, and untrusted networks.