Ipv6 Support - D-Link NetDefendOS User Manual

3.2. IPv6 Support

All the IP addresses discussed so far are of the IPv4 type. The IP address standard IPv6 is designed
as a successor to IPv4 with the principal advantage of providing a much larger 128 bit address
space. Among many other advantages, the large number of available global IPv6 addresses
means that NAT is no longer required to share a limited number of public IPv4 addresses.
This section discusses how IPv6 usage is enabled, how IPv6 objects are created, how stateless
auto-configuration by clients is enabled and how to create IP rules and routes that use IPv6
address objects.
NetDefendOS Configuration Objects Supporting IPv6
The following objects of NetDefendOS provide IPv6 support:
• The address book.
• Routing tables (except switch routes).
• Routing rules.
• IP rules and IP policies (excluding some actions).
• The HTTP and LW-HTTP ALGs when used with IP rules or IP policies.
IPv6 Must be Enabled Globally and on Each Interface
IPv6 must be explicitly enabled in NetDefendOS for it to function. This is done in the following
two ways:
A. Enable IPv6 globally.
B. Enable IPv6 on an Ethernet interface.
These two methods are described next.
A. Enable IPv6 Globally
There is a global advanced setting that enables IPv6 and if it is not enabled, all IPv6 traffic is
ignored. By default, this setting is disabled.
Example 3.9. Enabling IPv6 Globally
This example enables all IPv6 features across the whole of NetDefendOS. If an IPv6 feature is used
and this setting is not enabled, a warning will be generated when the configuration is activated.
Note: The prefix 2001:DB8::/32 is reserved for documentation
As described in RFC 3849, the IPv6 prefix 2001:DB8::/32 is specifically reserved for
documentation purposes. All IPv6 examples in this manual therefore use this network or
addresses from it.
156
Chapter 3: Fundamentals