Posted: September 17th, 2017
If IPSec provides security at the network layer, why is it that security mechanisms are still needed at layers above IP?
The first limitation is that it only provides coarse form policy management support, and takes the decision without the knowledge of
application context (Arkko and Nikender 2005, p. 242). The
policy selector of IPsec is composed of only tuple of
source /destination addresses, port number and
transport protocol type……