IPv4 and IPv6 Internet and Broadband Settings
48
NETGEAR ProSAFE VPN Firewall FVS318G v2
2. Select Network Configuration > WAN Settings > 6 to 4 Tunneling.
3. Select the En
able Automatic Tunneling check box.
4. Click the Appl
y button.
Your changes are saved.
Configure ISATAP Automatic Tunneling
If your network is an IPv4 network or IPv6 network that consists of both IPv4 and IPv6
devices, you must make sure that the IPv6 packets can travel over the IPv4 intranet by
enabling and configuring Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
tunneling.
ISATAP is a LAN tunnel mechanism in which the IPv4 network function
s as a virtual IPv6
local link. Each IPv4 address is mapped to a link-local IPv6 address, that is, the IPv4 address
is used in the interface portion of the IPv6 address. ISATAP tunneling is used intra site, that
is, between addresses in the LAN. For more information about link-local addresses, see
Manage the IPv6 LAN on page 78.
If you do
not use a stateful DHCPv6 server in your LAN, you must configure
the Router
Advertisement Daemon (RADVD) and set up ISATAP advertisement prefixes (which are
referred to as Global/Local/ISATAP prefixes) for ISATAP tunneling to function correctly. For
more information, see Manage the IPv6 LAN on pag
e 78.
The VPN firewall determines the link-local address by co
ncatenating the IPv6 address with
the 32 bits of the IPv4 host address:
• For a uniqu
e
global address:
fe80:0000:0000:0000:0000:5efe (or fe80::5efe) is concatenated with the IPv4 add
ress.
For example, fe80::5efe with 10.29.33.4 becomes fe80::5efe:10.29.33.4, or in
hexadecimal format, fe80::5efe:a1d:2104.
• For a private add
ress:
fe80:
0000:0000:0000:0200:5efe (or fe80::200:5efe) is concatenated with t
he IPv4
address. For example, fe80::200:5efe with 192.168.1.1 becomes
fe80::200:5efe:192.168.1.1, or in hexadecimal format, fe80::200:5efe:c0a8:101.
To configure an ISATAP tunnel:
1. Log in to the unit:
a. In the address field of any of the qualified web browsers, enter
https://192.168.1.1.
The NETGEAR Configuration Manager Login screen displays.