ZyXEL Communications P-334W - Manual (Page 224)

Prestige 334W User’s Guide
16-14 VPN Screens
Table 16-7 VPN: Rule Setup (Basic)
LABEL DESCRIPTION
Peer Content The configuration of the peer content depends on the peer ID type.
For IP, type the IP address of the computer with which you will make the
VPN connection. If you configure this field to 0.0.0.0 or leave it blank, the
Prestige will use the address in the Secure Gateway Address field (refer
to the Secure Gateway Address field description).
For DNS or E-mail, type a domain name or e-mail address by which to
identify the remote IPSec router. Use up to 31 ASCII characters including
spaces, although trailing spaces are truncated. The domain name or e-mail
address is for identification purposes only and can be any string.
It is recommended that you type an IP address other than 0.0.0.0 or use the DNS or
E-mail ID type in the following situations:
When there is a NAT router between the two IPSec routers.
When you want the Prestige to distinguish between VPN connection
requests that come in from remote IPSec routers with dynamic WAN IP
addresses.
Encapsulation
Mode Select Tunnel mode or Transport mode from the drop-down list box.
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 Encryption
Algorithm and Authentication Algorithm fields (described next).
Select AH if you want to use AH (Authentication Header Protocol). The AH protocol
(RFC 2402) was designed for integrity, authentication, sequence integrity (replay
resistance), and non-repudiation but not for confidentiality, for which the ESP was
designed. If you select AH here, you must select options from the Authentication
Algorithm field (described later).