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MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

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26-34 Chapter 26 Implementing, Managing, and Troubleshooting Network Protocols and Services<br />

Objective 6.6<br />

Configure, Manage, and<br />

Troubleshoot an Internet<br />

Connection Firewall<br />

Windows XP Professional is a client operating system, but it has many server capabilities.<br />

It can share folders and printers, host a Web site, and receive messages from other<br />

computers on the network. Unfortunately, by listening for inbound connections, Windows<br />

XP is vulnerable to network attacks against those services.<br />

Firewalls help protect against network attacks by blocking any network requests that<br />

have not specifically been allowed. Windows XP includes a built-in firewall named<br />

Internet Connection Firewall (ICF). Unfortunately, ICF is not enabled by default. When<br />

you install Service Pack 2, ICF is upgraded to Windows Firewall. Windows Firewall is<br />

enabled by default, and greatly reduces the risk of network attacks.<br />

To successfully answer questions in this objective, you must know how to configure<br />

both ICF and Windows Firewall. Additionally, you should understand how to configure<br />

exceptions to selectively enable applications that must receive incoming connections.

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