The present invention provides a system and method for dynamically selecting an authentication virtual server from a plurality of authentication virtual servers. A traffic management virtual server may determine from a request received from a client to access content of a server that the client has not been authenticated. The traffic management virtual server can identify a policy for selecting an authentication virtual server to provide authentication of the client. Responsive to the identification, the traffic management virtual server can select, via the policy, an authentication virtual server of the plurality of authentication virtual servers to authenticate the client. Responsive to the request, the traffic management virtual server may transmit a response to the client The response includes an instruction to redirect to the selected authentication virtual server.