Mod rewrite Code Library

Code Library - Canonical Domain Sabotage

Security
Canonical Domain Sabotage (Duplicate Search Engine Penalties)

htaccess code
RewriteCond %{HTTP_HOST} !^www\.domain
RewriteCond %{HTTP_HOST} !^sub1\.domain [NC]
RewriteCond %{HTTP_HOST} !^sub2\.domain [NC]
RewriteCond %{HTTP_HOST} !^sub3\.domain [NC]
RewriteCond %{HTTP_HOST} !^sub4\.domain [NC]
RewriteCond %{HTTP_HOST} !^sub5\.domain [NC]
RewriteRule (.*) http //www.domain.com/$1 [R=301,L]