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VPN 3002 Hardware Client Getting Started
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Chapter 3 Using the VPN 3002 Hardware Client Manager for Quick Configuration
Configuring the Public Interface
Step 8
If you specify an IP address, in the Default Gateway field, enter the IP address or hostname of the system
to which the VPN 3002 should forward packets that do not have a static route. The default gateway must
be accessible from the VPN 3002 public network. If you are using DHCP to acquire the public IP
address, DHCP usually supplies the default gateway, and you should leave this field blank.
To specify no default gateway—which means the VPN 3002 drops unrouted packets—leave this field at
0.0.0.0.
Step 9
Click Continue to apply your choices to the interface and proceed. Click Back to return to the
Configuration | Quick | Private Interface
screen.
See the sections that follow for more information about DHCP, PPPoE, and static addressing.
DHCP
Dynamic Host Configuration Protocol (DHCP) is a communications protocol that lets IP hosts in its
network automatically obtain IP addresses from a limited pool of addresses for a fixed length of time, or
lease period. Using DHCP simplifies configuration since you can manage the assignment of IP addresses
from a central point. You do not need to manually enter an IP address for the public interface, and you
do not need to know what IP addresses are considered valid on a particular network.
The DHCP server for the Public interface resides on the public network.
PPPoE
PPP over Ethernet (PPPoE) is a proposal that specifies how a network client interacts with a service
provider’s equipment, such as a broadband modem—xDSL, cable, or wireless—to achieve access to
high-speed data networks. It relies on the Ethernet and PPP standards. It includes an authentication
strategy that requires a username and password to create a PPPoE session on the VPN 3002.
If a PPPoE session fails due to a PPP authentication failure, the VPN 3002 does not attempt a new session
until 30 seconds have passed.
Specify an IP address
This option enables you to set a static IP address, subnet mask, and default gateway for the public
interface.
