Ipsec architecture, Ipsec algorithms, 2 ipsec architecture – ZyXEL Communications P-334W User Manual
Page 207
Prestige 334W User’s Guide
Introduction to IPSec
15-3
15.2 IPSec Architecture
The overall IPSec architecture is shown as follows.
Figure 15-2 IPSec Architecture
15.2.1 IPSec Algorithms
The ESP (Encapsulating Security Payload) Protocol (RFC 2406) and AH (Authentication Header) protocol
(RFC 2402) describe the packet formats and the default standards for packet structure (including
implementation algorithms).
The Encryption Algorithm describes the use of encryption techniques such as DES (Data Encryption
Standard) and Triple DES algorithms.
The Authentication Algorithms, HMAC-MD5 (RFC 2403) and HMAC-SHA-1 (RFC 2404, provide an
authentication mechanism for the AH and ESP protocols. Please see Section 16.2 for more information.
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