Client execution unit accessing method for e.g. remote maintenance system, involves creating bidirectional tunnel on TCP/IP connection, where server and client execution units communicate through tunnel to send and receive data

摘要

The method involves connecting a client execution unit by a TCP/IP connection to a TCP/IP port of a server (14) either directly, or by using CONNECT commands of HTTP proxies (7,12). The proxies are parameterized to authorize the connection. A bidirectional tunnel (8) is created on the TCP/IP connection, where a server execution unit communicates with the client execution unit through the tunnel to send and/or receive all types of data.