Security

There are 2 types mechanisms that can be used singly or together to provide different levels of security to different users.  First mechanism is called the "IPng Authentication Header", an extension header that provides authentication and integrity to IPv6 datagrams.   Its placement at the internet layer can help provide host origin authentication to those upper layer protocols and services that currently lack protections.  However, it does not provide confidentiality.  The second mechanism is the "IPng Encapsulating Security Header".  This provides integrity and confidentiality to IPv6 datagrams.  It is similar to some security protocols such as ISO NLSP (Network Layer Security Protocol), but easier and use DES CBC (Cipher Block Chaining Mode) for standard algorithm.