ZyXEL Communications ZYWALL USG 20 Manual page 412

Chapter 23 IPSec VPN
Table 118 Configuration > VPN > IPSec VPN > VPN Gateway > Edit (continued)
LABEL
Content
Phase 1 Settings
SA Life Time
(Seconds)
412
DESCRIPTION
This field is disabled if the Peer ID Type is Any. Type the identity of
the remote IPSec router during authentication. The identity depends
on the Peer ID Type.
If the ZyWALL and remote IPSec router do not use certificates,
IP - type an IP address; see the note at the end of this description.
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.
If the ZyWALL and remote IPSec router use certificates, type the
following fields from the certificate used by the remote IPSec router.
IP - subject alternative name field; see the note at the end of this
description.
DNS - subject alternative name field
E-mail - subject alternative name field
Subject Name - subject name (maximum 255 ASCII characters,
including spaces)
Note: If Peer ID Type is IP, please read the rest of this section.
If you type 0.0.0.0, the ZyWALL uses the IP address specified in the
Secure Gateway 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
Peer ID Type.
Type the maximum number of seconds the IKE SA can last. When
this time has passed, the ZyWALL and remote IPSec router have to
update the encryption and authentication keys and re-negotiate the
IKE SA. This does not affect any existing IPSec SAs, however.
ZyWALL USG 20/20W User's Guide