Website publishing on TMG 2010. HTTP to HTTPS and domain.com to www.domain.com redirect with response code 301 (for search engine optimization and pageRank).

Consider the following scenario:
You need to publish a new secure website and to avoid situations where users can't access your site because they do not know the difference between http vs. https nor www.company.com vs. company.com

For this we will need to setup some redirection rules.

There are few ways you can do that via TMG, but it will result in 302 redirects which you want to avoid and instead use 301 response code for redirection (so I've been told by SEO guys).

So our goal is to configure IIS/TMG to redirect the following addresses with response code 301:
http://company.com
https://company.com
http://www.company.com

to https://www.company.com

First step - configuring IIS applications.

For this to work we will need two IIS applications. One for redirects and another one - the actual application.
For your actual application in IIS assign binding address: https://www.company.com
For redirection application assign bindings for addresses: http://company.com, https://company.com and http://www.company.com
And enable HTTP redirect to https://www.company.com with status code: Permanent (301).



Second step - TMG rules.
We will need two TMG rules with common weblistener.

Connections tab:
Enable HTTP connections
Enable SSL (HTTPS) connections
Do not redirect traffic from HTTP to HTTPS

First publishing rule for www.company.com (make sure it is above second rule)Bridging tab:
Redirect requests to HTTP
Redirect requests to SSL

Public name: www.company.com

Second rule for company.com (make sure it is below first rule).
Settings are identical to first rule, except for public name you specify domain company.com

After that any of the four addresses
http://company.com
https://company.com
http://www.company.com
https://www.company.com
should result in https://www.company.com

Links:
How to Allow HTTP 301 through ISA Server 2006 - http://blogs.technet.com/b/isablog/archive/2009/03/05/how-to-allow-http-301-through-isa-server-2006.aspx
Test your redirect method - http://www.redirect-checker.org/