Redirect on Referrer

[tzflorida]

I have a directory called /news

I have it setup so that the subdomain news.mydomain.com points to /news

What I would like to achieve with htaccess is to allow only access to the directory if somebody types in the subdomain and prevent any access through: mydomain.com/news

Is this possible through htaccess?

I have not yet found a solution.

Any help appreciated :-)

[g1smd]

You'll need a conditional 301 redirect, one that redirects the 'wrong' URL to the right URL.