DYNAMIC SYSTEM AND METHOD FOR SECURING A COMMUNICATION NETWORK USING PORTABLE AGENTS

摘要

The invention relates to a device which is placed in a computer network and which is used to secure the communication flows passing therethrough. According to the invention, the communication flows are secured using portable codes, known as portable agents, which can be downloaded from a remote station. The aforementioned portable agents cannot be executed by the device until they have been compiled by a compiler (C) contained in said device, at which point they become executable agents. The compiler translates the portable agents which are written in a language independent of the processor (P) into executable agents which are written in the language of the processor of the device, while carrying out checks on the functions performed by the agent. The executable agents are then executed on the device, according to the communication flows (PD) passing therethrough and a security policy which can also be downloaded from a remote station.