This work is about a bold step towards bringing proven security to embedded systems. Most present day embedded systems are shipped into market without any strong security primitives. Those that do have security; if at all, the security is propriety and does not conform to standards. IPsec is a well proven suite of standards for computer communication, over TCP/IP. Why not use a reduced version of the IPsec standard, adopted intelligently for the embedded systems? The users of embedded systems would welcome such a protection, if the security rules are not violated and no weaknesses are introduced.