Netgear FVS336G-300NAS Specifications Page 102

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Configure the IPv6 Internet and WAN Settings
102
ProSAFE Dual WAN Gigabit WAN SSL VPN Firewall FVS336Gv3
6to4 is a WAN tunnel mechanism for automatic tunneling of IPv6 traffic between a device
with an IPv6 address and a device with an IPv4 address, or the other way around. 6to4
tunneling is used to transfer IPv6 traffic between LAN IPv6 hosts and WAN IPv6 networks
over the IPv4 network.
With 6to4 tunnels, IPv6 packets are embedded within the IPv4 packet and then transported
over the IPv4 network. You do not need to specify remote tunnel endpoints, which are
automatically determined by relay routers on the Internet. You cannot use 6to4 tunnels for
traffic between IPv4-only devices and IPv6-only devices.
Note: If the VPN firewall functions as the endpoint for 6to4 tunnels in your
network, make sure that the VPN firewall has a static IPv4 address (see
Manually Configure a Static IPv4 Internet Connection on page 36). A
dynamic IPv4 address can cause routing problems on the 6to4 tunnels.
Note: If you do not use a stateful DHCPv6 server in your LAN, you must
configure the Router Advertisement Daemon (RADVD) and set up
6to4 advertisement prefixes for 6to4 tunneling to function correctly.
For more information, see Manage the IPv6 LAN on page 154.
Typically, 6to4 tunnel addresses start with a 2002 prefix (decimal notification). On the VPN
firewall, a 6to4 tunnel is indicated by sit0-WAN1 (see
View the Tunnel Status and Tunnel IPv6
Addresses on page 107).
Enable 6to4 Automatic Tunneling
The following procedure describes how to enable 6to4 automatic tunneling.
To enable 6to4 automatic tunneling:
1. On your computer, launch an Internet browser.
2. In the address field of your browser, enter the IP address that was assigned to the VPN
firewall during the installation process.
The VPN firewall factory default IP address is 192.168.1.1.
The NETGEAR Configuration Manager Login screen displays.
3. In the Username field, type your user name and in the Password / Passcode field, type
your password.
For the default administrative account, the default user name is admin and the default
password is password.
4. If you changed the default domain or were assigned a domain, from the Domain menu,
select the domain.
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