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I am installing Sharepoint 2007 and I want users to be able to sign into it from outside.

I need to know what ports do I need to open and do I need UDP or TCP or both?

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How will the users authenticate to SharePoint? – Jeff Apr 1 '10 at 23:38
up vote 1 down vote accepted

You should only need the (inbound) TCP port that your website is running on (80 or 443 if using SSL typically.)

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