5
IPS

EC

S

PECIFICATIONS

5.1IPSec Appendix

This appendix provides information about IPSec supported protocols and modes, encryption algorithms and block
sizes, and Black Box IPSec and IKE default values.
IPSec Supported Protocols and Algorithms
The following tables provide supported p ro tocol and algorithm information.
Table 1 IPSec Protocols Support
Table 2 Encryption Algorithms
Table 3 Authentication Algorithms
Supported Security
Protocols Mode
ESP Tunnel
Transport
AH Tunnel
Transport
Encryption Algorithms for ESP Block Size
Data Encryption Standard (DES) 56-bits
Triple Data Encryption S tandard (3DES) 168-bits
Advanced Encryption Standard (AES-128) 128-bits
Advanced Encryption Standard (AES-192) 192-bits
Advanced Encryption Standard (AES-256) 256-bits
Null Encryption
Authentication Algorithms for
AH/ESP Hash Size
HMAC-MD5-96 96-bits