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Internet Security
book

Internet Security

by Tim Speed, Juanita Ellis
April 2003
Intermediate to advanced content levelIntermediate to advanced
398 pages
9h 43m
English
Digital Press
Content preview from Internet Security
5

Protecting Your Intranet from the Extranet and Internet

image

Just walked into a Firewall.

5.1 So many choices!

A firewall is a system designed to control access to applications on a network, typically access to a private network from the public Internet. We know that when we connect to the Internet or any outside entity, we need a firewall. There are many different choices when it comes to defining the topology, selecting the vendor, and selecting the type of firewall.

There are three main types of firewall software and hardware configurations:

1. Packet filtering

2. Proxy server or application gateway

3. Circuit-level gateway or generic application ...

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Publisher Resources

ISBN: 9781555582982