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Internet Security: Firewall Principles

Audience

A wide range of information technology (IT) professionals and business managers, including IT managers, webmasters, system integrators, Internet/intranet/extranet consultants, departmental managers, and strategic IT planners

Prerequisites

The course Internet Security: Internet Site Security

Course Aim

To demonstrate how to plan and implement a firewall based on a security policy

Learning Objectives

Describe the TCP/IP protocol and some of the security concerns with it. Create a network security policy. Describe the various firewall configurations. Explain how packet filtering is used. Construct a packet filter. Discuss application and circuit-level gateways. Describe the process of stateful inspection. Determine where a firewall should be located. Determine what type of firewall best suits a particular network.

Topics Covered

Firewalls and network security - Overview of TCP/IP - TCP/IP services - Network security Firewall technologies - Introduction to firewalls - Firewall components - Packet filtering - Exercise: Configuring a packet filter Proxies and gateways - Application-level and circuit-level gateways - Stateful inspection Firewall implementations - Firewall policy - Firewall construction - Firewall implementations