Patent attributes
Data messages having secure data location addresses other than a predefined set are handled by a user terminal (14) in the normal way by setting up a secure tunnel (181) to a server specified in the data message (16). As this would prevent any proxy server from performing any processing on the content of the data message, messages that require the proxy to perform process on the data messages are processed separately. Data messages (251) incorporating secure media access locators identifying a predefined set of known media servers are identified by a message processing function (41, 410, 44) and passed to a proxy server over a connection between the user terminal and the proxy which does not tunnel past the proxy server, such that the proxy server may generate a redirected media access locator for return to the user terminal (14).
