ZyXEL Communications ZYWALL USG 20 Manual page 410

Chapter 23 IPSec VPN
Table 118 Configuration > VPN > IPSec VPN > VPN Gateway > Edit (continued)
LABEL
Certificate
Local ID Type
Content
410
DESCRIPTION
Select this to have the ZyWALL and remote IPSec router use
certificates to authenticate each other when they negotiate the IKE
SA. Then select the certificate the ZyWALL uses to identify itself to
the remote IPsec router.
This certificate is one of the certificates in My Certificates. If this
certificate is self-signed, import it into the remote IPsec router. If
this certificate is signed by a CA, the remote IPsec router must trust
that CA.
Note: The IPSec routers must trust each other's certificates.
The ZyWALL uses one of its Trusted Certificates to authenticate
the remote IPSec router's certificate. The trusted certificate can be a
self-signed certificate or that of a trusted CA that signed the remote
IPSec router's certificate.
This field is read-only if the ZyWALL and remote IPSec router use
certificates to identify each other. Select which type of identification
is used to identify the ZyWALL during authentication. Choices are:
IP - the ZyWALL is identified by an IP address
DNS - the ZyWALL is identified by a domain name
E-mail - the ZyWALL is identified by an e-mail address
This field is read-only if the ZyWALL and remote IPSec router use
certificates to identify each other. Type the identity of the ZyWALL
during authentication. The identity depends on the Local ID Type.
IP - type an IP address; if you type 0.0.0.0, the ZyWALL uses the IP
address specified in the My Address field. This is not recommended
in the following situations:
• There is a NAT router between the ZyWALL and remote IPSec
router.
• You want the remote IPSec router to be able to distinguish
between IPSec SA requests that come from IPSec routers with
dynamic WAN IP addresses.
In these situations, use a different IP address, or use a different
Local ID Type.
DNS - type the domain name; you can use up to 31 ASCII
characters including spaces, although trailing spaces are truncated.
This value is only used for identification and can be any string.
E-mail - the ZyWALL is identified by an e-mail address; you can use
up to 31 ASCII characters including spaces, although trailing spaces
are truncated. This value is only used for identification and can be
any string.
ZyWALL USG 20/20W User's Guide