A system enables a client coupled to a server via a network to exchange security policy information across the network. The client is configured to determine security policy associated with the server based on a notification returned from the server. The notification having policy information embedded therein is issued by the server in response to the server's decision to deny client's access request. Based on the policy information embedded in the notification, the client is configured to generate a new access request by either acquiring information from a client user or selecting a different credential from a library of credentials.