The transformed packet is sent to the “transmit queue” for transmission. IPSec Protocols IPSec standards have defined three main protocols: AH, ESP, IKE. Authentication Header (AH) AH provides data ...

IPsec is a suite of protocols that are used ... Note that it’s possible to use both AH and ESP simultaneously, although newer versions of the ESP protocol incorporate much of AH’s functionality.

The ESP header includes the same common IPSec fields found in the AH header (SPI and sequence number), which are used to associate the packet with the proper "IPSec session". Encrypted payload follows ...

IPsec is mandatory in IPv6 and optional in IPv4. To implement IPsec, two new protocols were added: Authentication Header (AH) and Encapsulating Security Payload (ESP). Handshaking and exchanging ...

If it does have to be NAT'd, what needs to be forwarded for the IPSec link to work properly? Note carefully that ESP and AH are not ports you can forward or open. From a handy Microsoft page ...

The EIP-97 is a Cryptographic Engine designed to offload the Host processor to improve the speed of IPsec ESP, IPsec AH, SRTP, SSL, TLS, DTLS and MACsec protocol operations and reduce power ... The ...