Background Reading on IPsec

[The IPsec Task Offload feature is deprecated and should not be used.]

To comprehend this section, you must understand Internet protocol security (IPsec) as specified in the following RFCs and drafts published by the IP Security Working Group of the Internet Engineering Task Force (IETF):

• Security Architecture for the Internet Protocol (RFC 2401)

Authentication header (AH):

• IP Authentication Header (RFC 2402)

• The Use of HMAC-MD5-96 within ESP and AH (RFC 2403)

• The Use of HMAC-SHA-1-96 within ESP and AH (RFC 2404)

• HMAC-MD5 IP Authentication with Replay Prevention (RFC 2085)

Encapsulating security payload (ESP):

• IP Encapsulating Security Payload (ESP) (RFC 2406)

• The ESP CBC-Mode Cipher Algorithms (RFC 2451)

• The ESP DES-CBC Cipher Algorithm with Explicit IV (RFC 2405)

• The NULL Encryption Algorithm and Its Use with IPsec (RFC 2410)