ZyXEL Communications LTE6100 DES, MD5, DES, MD5, 3DES, 3DES, AES128, AES192, AES256, Group2, Group5, AES128, AES192, AES256, Group14, Diffie-Hellman, Diffie-Hellman, Diffie-Hellman

Chapter 13 VPN

Table 37 IPSec VPN: Add

LABEL	DESCRIPTION
Encryption	Select which key size and encryption algorithm to use in the IKE SA. Choices
Algorithm	are:
	DES - a 56-bit key with the DES encryption algorithm
	3DES - a 168-bit key with the DES encryption algorithm
	AES128 - a 128-bit key with the AES encryption algorithm
	AES192 - a 192-bit key with the AES encryption algorithm
	AES256 - a 256-bit key with the AES encryption algorithm
	The LTE Device and the remote IPSec router must use the same key size and
	encryption algorithm. Longer keys require more processing power, resulting in
	increased latency and decreased throughput.
Authentication	Select which hash algorithm to use to authenticate packet data. Choices are
Algorithm	MD5, SHA1, SHA2-256and SHA2-512. SHA is generally considered stronger
	than MD5, but it is also slower.
DH	Select which Diffie-Hellman key group you want to use for encryption keys.
	Choices are:
	Diffie-Hellman Group2 - use a 1024-bit random number
	Diffie-Hellman Group5 - use a 1536-bit random number
	Diffie-Hellman Group14 - use a 2048-bit random number
	The longer the key, the more secure the encryption, but also the longer it takes
	to encrypt and decrypt information. Both routers must use the same DH key
	group.
SA Life Time	Define the length of time before an IPSec SA automatically renegotiates in this
	field.
	A short SA Life Time increases security by forcing the two VPN gateways to
	update the encryption and authentication keys. However, every time the VPN
	tunnel renegotiates, all users accessing remote resources are temporarily
	disconnected.
Phase 2
Encryption	Select which key size and encryption algorithm to use in the IKE SA. Choices
Algorithm	are:
	DES - a 56-bit key with the DES encryption algorithm
	3DES - a 168-bit key with the DES encryption algorithm
	AES128 - a 128-bit key with the AES encryption algorithm
	AES192 - a 192-bit key with the AES encryption algorithm
	AES256 - a 256-bit key with the AES encryption algorithm
	The LTE Device and the remote IPSec router must use the same key size and
	encryption algorithm. Longer keys require more processing power, resulting in
	increased latency and decreased throughput.
Authentication	Select which hash algorithm to use to authenticate packet data. Choices are
Algorithm	MD5, SHA1, SHA2-256and SHA2-512. SHA is generally considered stronger
	than MD5, but it is also slower.

90
	LTE6100 User’s Guide