You can create rules that include or exclude content from the content index. These rules are called site restrictions and site path rules. A site restriction is the main rule for a site. You can show or hide the other rules for a site by clicking the plus sign (+) or minus sign (-) next to the site restriction. The other rules for a site are called site path rules. The site restriction defines the overall rules for a site, and the site path rules are rules for specific parts of the site. For example, a site restriction might apply to the whole site example.microsoft.com, and the site path rules for that site apply to http://example.microsoft.com/ and http://example.microsoft.com/*. If no site path rule applies to a path in a site, then the site restriction applies.
You can use site restrictions and site path rules to do the following:
Rules can use general expressions and wild cards, as shown in the following examples:
Document shortcuts are subject to the same site and path restrictions as other documents and content sources in the portal site. If a user adds a document shortcut to the portal site, Microsoft Office SharePoint Portal Server 2003 updates that shortcut in the same way as other content sources. If site or file type restrictions prohibit the inclusion of a shortcut in the index, SharePoint Portal Server does not include content from that document shortcut in the index.
The settings described by these rules will become effective only after a new crawl occurs. If you change rules during a crawl, any content that has not been crawled yet and that is described by the rule will be affected by the changes.