Read this complete Knowledgebase articles and know how to configure IIS to serve web fonts.

If you are embedding true type fonts in your webpages, you must add a mime type to IIS to enable support of Firefox.

By default IIS has EOT and TTF files in the mime type list, you should also add WOFF.

To do this:

• Open IIS
• Click on your website
• Click on 'Mime Types'
• Click 'Add'
• Enter the mime type extension: WOFF
• Enter the mime type: application/octet-stream
• Click 'OK'