A method and associated system for connecting a computing device to a computing arrangement. A message from the computing device is received. The message includes an address specifying the computing arrangement. The proxy system is a computer system. It is determined, based on the address, that a secure connection between the proxy system and the computing arrangement does not exist. The secure connection is dedicated for secure communication between the computing device and the computing arrangement. In response to the determining that the secure connection does not exist, a new secure connection is established between the proxy system and the computing arrangement.