Restrict access for webpages of the published site from Internet

Hi,

we have deployed TMG 2010 in our client environment for publishing their in-house SharePoint portal on Internet. Client wants to secure some of the webpages and the web services for the published site that are invoked by the webpages from Internet.

we have enabled the URL filtering and added the URL set for webpage and web services URLs (for those we want to restrict access from Internet) in the deny rule"Block web destinations" in the web access policy.

But still the URLs are accessible from Internet and in logs provided access by the SharePoint publishing rule because the URLs have the same path of the published site.
say for e.g. the published site URL iswww.somedomain.com

and the URLs to be restricted from internet are www.somedomain.com/vti_inf/path1/, www.somedomain.com/vti_inf/path2/ etc.

Can somebody please suggest how we can restrict access for these URLs from Internet in TMG 2010 using URL filtering or any other technique ?

Thanks,

Sanjog