Mobile devices act as hosts and routers in Mobile Ad-hoc Networks with no designed infrastructure. The enormous increase in MANETs provides the evolution of various solutions from wired to wireless to Mobile Ad-hoc Networks. The security has been the key in any communication implementation. The security implementation in MANET is a challenging and not considered much for research. In this work we attempt to build a novel platform for the security solutions for MANET architecture. We propose the architectural reference model for MANET, which provides scope for researchers to enhance and contribute to this research work. We discuss about the traditional IPSec and propose transformed IPSec in MANET environments.