ZyXEL Communications 792H manual VPN Screens 14-23

	Prestige 792H G.SHDSL Router
	Table 14-9 VPN Manual Key
LABEL	DESCRIPTION
My IP Address	Enter the WAN IP address of your Prestige. The Prestige uses its current WAN IP
	address (static or dynamic) in setting up the VPN tunnel if you leave this field as
	0.0.0.0. The VPN tunnel has to be rebuilt if this IP address changes.
Secure Gateway	Type the WAN IP address or the URL (up to 31 characters) of the IPSec router with
Address	which you're making the VPN connection. Set this field to 0.0.0.0 if the remote IPSec
	router has a dynamic WAN IP address (the IPSec Key Mode field must be set to
	IKE).
Security Protocol
IPSec Protocol	Select ESP if you want to use ESP (Encapsulation Security Payload). The ESP
	protocol (RFC 2406) provides encryption as well as some of the services offered by
	AH. If you select ESP here, you must select options from the Authentication
	Algorithm field (described later).
Encryption Algorithm	Select DES, 3DES or NULL from the drop-down list box.
	When DES is used for data communications, both sender and receiver must know the
	same secret key, which can be used to encrypt and decrypt the message or to
	generate and verify a message authentication code. The DES encryption algorithm
	uses a 56-bit key. Triple DES (3DES) is a variation on DES that uses a 168-bit key.
	As a result, 3DES is more secure than DES. It also requires more processing power,
	resulting in increased latency and decreased throughput. Select NULL to set up a
	tunnel without encryption. When you select NULL, you do not enter an encryption
	key.
Encapsulation Key	With DES, type a unique key 8 characters long. With 3DES, type a unique key 24
(only with ESP)	characters long. Any characters may be used, including spaces, but trailing spaces
	are truncated.
Authentication	Select SHA1 or MD5 from the drop-down list box. MD5 (Message Digest 5) and
Algorithm	SHA1 (Secure Hash Algorithm) are hash algorithms used to authenticate packet data.
	The SHA1 algorithm is generally considered stronger than MD5, but is slower. Select
	MD5 for minimal security and SHA-1for maximum security.
Authentication Key	Type a unique authentication key to be used by IPSec if applicable. Enter 16
	characters for MD5 authentication or 20 characters for SHA-1 authentication. Any
	characters may be used, including spaces, but trailing spaces are truncated.
Back	Click Back to return to the previous screen.

VPN Screens 14-23