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26
2
2.
IPv4 and IPv6 Internet and WAN
Settings
This chapter explains how to configure the IPv4 and IPv6 Internet and WAN settings. The
chapter contains the following sections:
•
Internet and WAN Configuration Tasks
•
Configure the IPv4 Internet Connection and WAN Settings
•
Configure the IPv6 Internet Connection and WAN Settings
•
Configure Advanced WAN Options and Other Tasks
•
Configure WAN QoS Profiles
•
Additional WAN-Related Configuration Tasks
•
What to Do Next
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IPv4 and IPv6 Internet and WAN Settings
27
ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
Internet and WAN Configuration Tasks
•
Roadmap to Setting Up IPv4 Internet Connections to Your ISPs
•
Roadmap to Setting Up IPv6 Internet Connections to Your ISPs
Typically, the VPN firewall is installed as a network gateway to function as a combined LAN
switch and firewall to protect the network from incoming threats and provide secure
connections. To complement the firewall protection, NETGEAR advises that you use a
gateway security appliance such as a NETGEAR ProSecure STM appliance.
The tasks that are required to complete the Internet connection of your VPN firewall depend
on whether you use an IPv4 connection, an IPv6 connection, or both to your Internet service
provider (ISP).
Note:
The VPN firewall supports simultaneous IPv4 and IPv6 connections.
Roadmap to Setting Up IPv4 Internet Connections to Your
ISPs
Setting up IPv4 Internet connections to your ISP or ISPs includes seven tasks, five of which
are optional.
Complete these tasks:
1.
Configure the IPv4 routing mode
. Select either NAT or classical routing.
This task is described in
Configure the IPv4 WAN Mode
on page
29.
2.
Configure the IPv4 Internet connections to your ISPs
. Connect to one or more ISPs by
configuring up to four WAN interfaces.
You have two configuration options. These tasks are described in the following sections:
•
Let the VPN Firewall Automatically Detect and Configure an IPv4 Internet Connection
on page
31
•
Manually Configure an IPv4 Internet Connection
on page
34
3.
(Optional) Configure either load balancing or auto-rollover
. By default, the WAN
interfaces are configured for primary (single) WAN mode. You can select load balancing
or auto-rollover and a failure detection method. If you configure load balancing, you can also
configure protocol binding.
This task is described in
Configure Load Balancing or Auto-Rollover for IPv4 Interfaces
on page
40.
4.
(Optional) Configure secondary WAN addresses on the WAN interfaces
. Configure
aliases for each WAN interface.
This task is described in
Configure Secondary WAN Addresses
on page
47.
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IPv4 and IPv6 Internet and WAN Settings
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ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
5.
(Optional) Configure Dynamic DNS on the WAN interfaces
. If necessary, configure your
fully qualified domain names.
This task is described in
Configure Dynamic DNS
on page
49.
6.
(Optional) Configure the WAN options
. If necessary, change the factory default MTU size,
port speed, and MAC address of the VPN firewall. These are advanced features, and you
usually do not need to change the settings.
This task is described in
Configure Advanced WAN Options and Other Tasks
on page
71.
7.
(Optional) Configure the WAN traffic meters
.
This task is described in
Configure and Enable the WAN Traffic Meter
on page
356.
Roadmap to Setting Up IPv6 Internet Connections to Your
ISPs
Setting up IPv6 Internet connections to your ISP or ISPs includes six tasks, four of which are
optional.
Complete these tasks:
1.
Configure the IPv6 routing mode
. Configure the VPN firewall to support both devices
with IPv4 addresses and devices with IPv6 addresses.
This task is described in
Configure the IPv6 Routing Mode
on page
53.
2.
Configure the IPv6 Internet connections to your ISPs
. Connect to an ISP by configuring
a WAN interface.
You have three configuration options. These tasks are described in the following sections:
•
Use a DHCPv6 Server to Configure an IPv6 Internet Connection
on page
55
•
Configure a Static IPv6 Internet Connection
on page
58
•
Configure a PPPoE IPv6 Internet Connection
on page
61
3.
(Optional) Configure the IPv6 tunnels
. Enable 6to4 tunnels and configure ISATAP tunnels.
These tasks are described in the following sections:
•
Configure 6to4 Automatic Tunneling
on page
64
•
Configure ISATAP Automatic Tunneling
on page
65
4.
(Optional) Configure Stateless IP/ICMP Translation (SIIT)
. Enable IPv6 devices that do
not have permanently assigned IPv4 addresses to communicate with IPv4-only devices.
This task is described in
Configure Stateless IP/ICMP Translation
on page
67.
5.
(Optional) Configure auto-rollover
. By default, the WAN interfaces are configured for
primary (single) WAN mode. You can enable auto-rollover and configure the failure detection
settings.
These tasks are described in
Configure Auto-Rollover for IPv6 Interfaces
on page
68.
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ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
6.
(Optional) Configure the WAN options
. If necessary, change the factory default MTU size,
port speed, and MAC address of the VPN firewall. These are advanced features, and you
usually do not need to change the settings.
These tasks are described in
Configure Advanced WAN Options and Other Tasks
on
page
71.
Configure the IPv4 Internet Connection and WAN
Settings
•
Configure the IPv4 WAN Mode
•
Let the VPN Firewall Automatically Detect and Configure an IPv4 Internet Connection
•
Manually Configure an IPv4 Internet Connection
•
Configure Load Balancing or Auto-Rollover for IPv4 Interfaces
•
Configure Secondary WAN Addresses
•
Configure Dynamic DNS
To set up your VPN firewall for secure IPv4 Internet connections, you need to determine the
IPv4 WAN mode (see the next section) and then configure the IPv4 Internet connection to
your ISP on the WAN port. The web management interface offers two connection
configuration options, described in the following sections:
•
Let the VPN Firewall Automatically Detect and Configure an IPv4 Internet Connection
on
page
31
•
Manually Configure an IPv4 Internet Connection
on page
34
Configure the IPv4 WAN Mode
By default, IPv4 is supported and functions in NAT mode but can also function in classical
routing mode. IPv4 functions the same way in IPv4-only mode that it does in IPv4 / IPv6
mode. The latter mode adds IPv6 functionality (see
Configure the IPv6 Routing Mode
on
page
53).
Network Address Translation
Network Address Translation (NAT) allows all computers on your LAN to share a single public
Internet IP address. From the Internet, there is only a single device (the VPN firewall) and a
single IP address. Computers on your LAN can use any private IP address range, and these
IP addresses are not visible from the Internet.
Note the following about NAT:
•
The VPN firewall uses NAT to select the correct computer (on your LAN) to receive any
incoming data.
•
If you have only a single public Internet IP address, you need to use NAT (the default
setting).
Page 30 / 469
IPv4 and IPv6 Internet and WAN Settings
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ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
•
If your ISP has provided you with multiple public IP addresses, you can use one address
as the primary shared address for Internet access by your computers, and you can map
incoming traffic on the other public IP addresses to specific computers on your LAN. This
one-to-one inbound mapping is configured using an inbound firewall rule.
Classical Routing
In classical routing mode, the VPN firewall performs routing, but without NAT. To gain Internet
access, each computer on your LAN needs to have a valid static Internet IP address.
If your ISP has allocated a number of static IP addresses to you, and you have assigned one
of these addresses to each computer, you can choose classical routing. Or you can use
classical routing for routing private IP addresses within a campus environment.
To view the status of the WAN ports, you can view the Router Status screen (see
View the
System Status
on page
369).
Configure the IPv4 Routing Mode
To configure the IPv4 routing mode:
1.
Select
Network Configuration > WAN Settings > WAN Mode
.
The WAN Mode screen
displays:
Figure 10.
2.
In the NAT (Network Address Translation) section of the screen, select the
NAT
radio button
or the
Classical Routing
radio button.
WARNING:
Changing the WAN mode causes all LAN WAN and DMZ WAN
inbound rules to revert to default settings.

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