ZyXEL Communications P-324 User's Guide download pdf (Page 242)

P-2602HWNLI User’s Guide

242 Chapter 17 VPN Screens

17.3 My IP Address

My IP Address is the WAN IP address of the ZyXEL Device. The ZyXEL Device has to

rebuild the VPN tunnel if the My IP Address changes after setup.

The following applies if this field is configured as 0.0.0.0:

• The ZyXEL Device uses the current ZyXEL Device WAN IP address (static or dynamic)

to set up the VPN tunnel.

• If the WAN connection goes down, the ZyXEL Device uses the dial backup IP address

for the VPN tunnel when using dial backup or the LAN IP address when using traffic

redirect. See the chapter on WAN for details on dial backup and traffic redirect.

Table 86 AH and ESP

ESP AH

ENCRYPTION

DES (default)

Data Encryption Standard (DES) is a widely

used method of data encryption using a

private (secret) key. DES applies a 56-bit key

to each 64-bit block of data.

MD5 (default)

MD5 (Message Digest 5) produces a 128-bit

digest to authenticate packet data.

3DES

Triple DES (3DES) is a variant of DES, which

iterates three times with three separate keys

(3 x 56 = 168 bits), effectively doubling the

strength of DES.

SHA1

SHA1 (Secure Hash Algorithm) produces a

160-bit digest to authenticate packet data.

AES

Advanced Encryption Standard is a newer

method of data encryption that also uses a

secret key. This implementation of AES

applies a 128-bit key to 128-bit blocks of data.

AES is faster than 3DES.

Select NULL to set up a phase 2 tunnel

without encryption.

AUTHENTICATION

MD5 (default)

MD5 (Message Digest 5) produces a 128-bit

digest to authenticate packet data.

MD5 (default)

MD5 (Message Digest 5) produces a 128-bit

digest to authenticate packet data.

SHA1

SHA1 (Secure Hash Algorithm) produces a

160-bit digest to authenticate packet data.

SHA1

SHA1 (Secure Hash Algorithm) produces a

160-bit digest to authenticate packet data.

Select MD5 for minimal security and SHA1 for maximum security.

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