Security

IP Security

IETF developed IPSec as the security protocol for Internet Protocol (IP). In fact, IPSec was designed for the next generation of IP, which is IPv6. However, IPSec can be used with the current implementation of IP, which is IPv4.

Note One of the issues with Transmission Control Protocol/Internet Protocol (TCP/IP) is that it was not designed with security in mind; for example, TCP/IP does not accommodate authentication or privacy.

See the following:

IP Security and Authentication
IP Security and Privacy