Turning non-SSL traffic off

 
What is the easiest and cleanest way to entirely turn all non-SSL
traffic off and only allow SSL traffic to pass through? 
 
Thanks. 
 
Nadeem
 
Note: We are trying to use mod_rewrite, and it is currently messing up
the mod_jk connector:
 
<IfModule mod_rewrite.c>

    RewriteEngine On

    #Accept nothing else than login processing on port 443

    RewriteCond %{SERVER_PORT} !443

    RewriteRule ^/(.*) <our domain name>/$1 [L,R] 

</IfModule>