One way is to enable authentication on the site. That way, anonymous internet users can't see the site, but you can log in and see it just fine.
Another way would be to use IP restrictions to only allow the subnet on your local network access the server.
Another way would be to have two IP addressess on your web server: an internet IP address and an intranet one, and bind the Web server only to the intranet one.
hope this helps-
~~~~~~~~~~~~~~~~~~~~~~~~
Bill Staples
Product Unit Manager, IIS
blog:
http://blogs.iis.net/bills