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Microsoft Sharepoint Products and Technologies Resource Kit eBook

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Chapter 25<br />

Firewall Considerations for<br />

SharePoint Portal Server<br />

Deployments<br />

In this chapter:<br />

ISA Server 2000 Web Publishing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 674<br />

ISA Server 2000 Server Publishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 689<br />

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 691<br />

When a <strong>Microsoft</strong> Office SharePoint Portal Server deployment provides services<br />

across an extranet or is accessible from the Internet by the general public, the threat<br />

of compromise to those services is significantly increased in comparison with an<br />

intranet deployment. To assure a high level of protection, external access to the<br />

SharePoint Portal Server deployment must occur through a firewall (shown in Figure<br />

25-1). The firewall inspects all incoming <strong>and</strong> outgoing traffic, <strong>and</strong> then allows or disallows<br />

the traffic based on the preconfigured policies. Configuration of the firewall<br />

is an important part of your overall solution that requires careful consideration.<br />

673

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