Sep 07, 2019 · IPsec is a framework of standards developed by Cisco that relies on OSI algorithms. IPsec is a framework of open standards that relies on existing algorithms.* IPsec works at the network layer and operates over all Layer 2 protocols.* IPsec works at the application layer and protects all application data.
ESP will function with both the IPv4 and IPv6 protocols. ESP supports two modes of operation, tunnel mode and transport mode. RFC 4303:. The ESP header is designed to provide a mix of security services in IPv4 and IPv6.