ZyXEL Communications Internet Security Gateway ZyWALL 2 Series User Manual page 223

LABEL
Local ID Type Select IP to identify this ZyWALL by its IP address.
Select DNS to identify this ZyWALL by a domain name.
Select E-mail to identify this ZyWALL by an e-mail address.
You do not configure the local ID type and content when you set Authentication Method
to Certificate. The ZyWALL takes them from the certificate you select.
Content When you select IP in the Local ID Type field, type the IP address of your computer in the
local Content field. The ZyWALL automatically uses the IP address in the My IP Address
field (refer to the My IP Address field description) if you configure the local Content field
to 0.0.0.0 or leave it blank.
It is recommended that you type an IP address other than 0.0.0.0 in the local Content field
or use the DNS or E-mail ID type in the following situations.
When you select DNS or E-mail in the Local ID Type field, type a domain name or e-mail
address by which to identify this ZyWALL in the local Content field. 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.
VPN Screens
Table 14-7 Basic IKE VPN Rule Edit
When there is a NAT router between the two IPSec routers.
When you want the remote IPSec router to be able to distinguish between VPN
connection requests that come in from IPSec routers with dynamic WAN IP
addresses.
ZyWALL 2 Series User's Guide
DESCRIPTION
14-17