I have not yet used 2011, so I don't completely know of what I speak. A few places where I differ with Sandeep is I prefer a public certificate that I bought rather than a self signed certificate. A couple of good blogs below. There are many more on the Internet.

http://blogs.technet.com/b/sbs/arch...ing-certificate-into-sbs-essentials.aspx

http://titlerequired.com/2011/07/15/setting-up-remote-web-access-on-sbs-2011-essentials-part-1/

Bert
Pediatrics
Brewer, Maine