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IPv4 and IPv6 Internet and Broadband Settings
38
ProSafe Wireless-N 8-Port Gigabit VPN Firewall FVS318N
• Isolated IPv6 network. If your network is an isolated IPv6 network that is not connected
to an IPv6 ISP, you need to make sure that the IPv6 packets can travel over the IPv4
Internet backbone; you do this by enabling automatic 6to4 tunneling (see Configure 6to4
Automatic Tunneling o
n page 46).
• Mix
ed network with IPv4 and IPv6 devices. If your network is an IPv4 network that
consists of both IPv4 and IPv6 devices, you need to make sure that the IPv6 packets can
travel over the IPv4 intranet; you do this by enabling and configuring ISATAP tunneling
(see Configure ISATAP Automatic Tunneling on p
age 47).
Note: A network can be both an isolated IPv6 network and a mixed
network with IPv4 and IPv6 devices.
After you have configured the IPv6 routing mode (see the next section), you need to
configure the WAN port with a global unicast address to enable secure IPv6 Internet
connections on your wireless VPN firewall. A global unicast address is a public and routable
IPv6 WAN address that can be statically or dynamically assigned. The web management
interface offers two connection configuration options:
• Automatic co
nfiguration of the network connection (see Use a DHCPv6 Server to
Configure an IPv6 Internet Connection o
n page 39)
• Ma
nual configuration of the network connection (see Configure a Static IPv6 Internet
Connection on p
age 41 or Configure a PPPoE IPv6 Internet Connection on page 43)
Configure the IPv6 Routing Mode
By default, the wireless VPN firewall supports IPv4 only. To use IPv6, you need to enable the
wireless VPN firewall to support both devices with IPv4 addresses and devices with IPv6
addresses. The routing mode does not include an IPv6-only option; however, you can still
configure a native IPv6 network if your ISP supports IPv6. These are the options:
• IPv4-on
ly mode. The wireless VPN firewall communicates only with devices that have
IPv4 addresses.
• IPv4/IPv6
mode. The wireless VPN firewall communicates with both devices that have
IPv4 addresses and devices that have IPv6 addresses.
Note: IPv6 always functions in classical routing mode between the WAN
interface and the LAN interfaces; NAT does not apply to IPv6.
To configure the IPv6 routing mode:
1. Select Netwo
rk Configuration > WAN Settings. The WAN Mode screen displays: