Encryption and Security Requirements for IETF Standard Protocols

Source: IETF

Security needs to be provided end-to-end or host to host. The IETF's security role is to ensure that IETF standard protocols have the necessary features to provide appropriate security for the application as it may be used across the Internet. Mandatory to implement mechanisms should provide adequate security to protect sensitive business applications.
The Internet is a global network of independently managed networks and hosts. As such there is no central authority responsible for the operation of the network. There is no central authority responsible for the provision of security across the network either.