Chapter 15 IPSec VPN Screens
ZyWALL 2WG User’s Guide
304
Fall back to
Primary Remote
Gateway when
possible
Select this to have the ZyWALL change back to using the primary remote gateway
if the connection becomes available again.
Fall Back Check
Interval*
Set how often the ZyWALL should check the connection to the primary remote
gateway while connected to the redundant remote gateway.
Each gateway policy uses one or more network policies. If the fall back check
interval is shorter than a network policy’s SA life time, the fall back check interval
is used as the check interval and network policy SA life time. If the fall back check
interval is longer than a network policy’s SA life time, the SA lifetime is used as
the check interval and network policy SA life time.
Authentication Key
Pre-Shared Key
Select the
Pre-Shared Key
radio button and type your pre-shared key in this field.
A pre-shared key identifies a communicating party during a phase 1 IKE
negotiation. It is called "pre-shared" because you have to share it with another
party before you can communicate with them over a secure connection.
Type from 8 to 31 case-sensitive ASCII characters or from 16 to 62 hexadecimal
("0-9", "A-F") characters. You must precede a hexadecimal key with a "0x (zero x),
which is not counted as part of the 16 to 62 character range for the key. For
example, in "0x0123456789ABCDEF", 0x denotes that the key is hexadecimal
and 0123456789ABCDEF is the key itself.
Both ends of the VPN tunnel must use the same pre-shared key. You will receive
a PYLD_MALFORMED (payload malformed) packet if the same pre-shared key is
not used on both ends.
Certificate
Select the
Certificate
radio button to identify the ZyWALL by a certificate.
Use the drop-down list box to select the certificate to use for this VPN tunnel. You
must have certificates already configured in the
My Certificates
screen. Click
My
Certificates
to go to the
My Certificates
screen where you can view the
ZyWALL's list of certificates.
Local ID Type
Select
IP
to identify this ZyWALL by its IP address.
Select
DNS
to identify this ZyWALL by a domain name.
Select
to identify this ZyWALL by an e-mail address.
You do not configure the local ID type and content when you set
Authentication
Key
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 ZyWALL
field (refer to the
My ZyWALL
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
ID type in the following situations.
1. When there is a NAT router between the two IPSec routers.
2. 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.
When you select
DNS
or
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.
Table 85
SECURITY > VPN > VPN Rules (IKE) > Edit Gateway Policy (continued)
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