Accessing directly one server from a load balancer

Question

I have my magento website at http://www.domain.com. This is linked to the load balancer with 4+ webserver behind.

I need to set up an url like http://www.front1.domain.com to access directly one of the front office server. But I'm always redirected to the base url.

I want to know if a trick exist to allow having only 1 website, 1 store, with multiple url allowing to bypass or not the load balancer.