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Book Contents

Book Index

Old Firewall Technologies

Older firewall technologies, such as packet filtering and application-layer gateways, are still in use in some environments. It is important to familiarize yourself with these technologies, so as to better understand the benefits and advantages of the Check Point Stateful Inspection firewall technology.

In This Section

Packet Filters

Application-Layer Gateways

See Also

The ZoneAlarm Firewall

What Is a Firewall?

Security Requirements

Check Point Stateful Inspection Technology