mirror of
https://github.com/opnsense/docs
synced 2024-11-18 21:28:29 +00:00
126 lines
4.9 KiB
ReStructuredText
126 lines
4.9 KiB
ReStructuredText
============================
|
|
Configure IPv6 Tunnel Broker
|
|
============================
|
|
**Original Author:** Shawn Webb
|
|
|
|
------------
|
|
Introduction
|
|
------------
|
|
|
|
OPNsense supports native IPv6 as well as tunneled IPv6. This article shows how
|
|
to set up TunnelBroker, Hurricane Electric's IPv6-in-IPv4 tunnel, with OPNsense.
|
|
If you're based in the US and you use Netflix, you might not want to follow these
|
|
instructions. Netflix now blocks TunnelBroker.
|
|
|
|
If you use IRC or need access to SMTP over the TunnelBroker connection,
|
|
Hurricane Electric requires you to go through their free IPv6 certification process.
|
|
Their "sage" level is the highest level and will allow you to enable IRC and SMTP.
|
|
Note that your OPNsense firewall must be directly connected to the Internet.
|
|
Being behind a NAT will not work.
|
|
|
|
The rest of this article assumes you already have a TunnelBroker account. If not,
|
|
sign up and go through the free IPv6 certification process. Screenshots are provided
|
|
throughout this article.
|
|
|
|
----------
|
|
Background
|
|
----------
|
|
|
|
Enable ICMP on the WAN side of your OPNsense firewall. TunnelBroker's UI will
|
|
tell you an IP to use when you're setting up your tunnel on their end.
|
|
|
|
Now add a tunnel. Make sure to add a routed /48 as we will need that to dish out
|
|
individual /64 slices to each network. Once configured, your tunnel settings
|
|
should look like this:
|
|
|
|
.. image:: images/tunnelbroker_setup.png
|
|
:width: 100%
|
|
|
|
-----------------------
|
|
Step 1 - Add GIF tunnel
|
|
-----------------------
|
|
|
|
To configure OPNsense start with adding a new gif interface.
|
|
Go to :menuselection:`Interfaces --> Other Types --> GIF` and click on **Add** in the upper tight corner
|
|
of the form.
|
|
|
|
Use the following settings and copy in the IPv4&6 addresses from your TunnelBroker's UI.
|
|
|
|
============================== ============================
|
|
**Parent interface** *WAN*
|
|
**GIF remote address** *Server IPv4 Address*
|
|
**GIF tunnel local address** *Client IPv6 Address*
|
|
**GIF tunnel remote address** *Server IPv6 Address/64*
|
|
**Route caching** *disabled*
|
|
**ECN friendly behavior** *disabled*
|
|
**Description** *Tunnel Broker*
|
|
============================== ============================
|
|
|
|
.. image:: images/opnsense_add_gif.png
|
|
:width: 100%
|
|
|
|
----------------------------------------------------
|
|
Step 2 - Configure the GIF tunnel as a new interface
|
|
----------------------------------------------------
|
|
|
|
The newly created GIF tunnel must now be assigned as a new interface.
|
|
Go to :menuselection:`Interfaces --> Assignments`, select the GIF tunnel for **New interface**
|
|
and click the **+** sign next to it.
|
|
|
|
Then under :menuselection:`Interfaces -> [OPTX]` check **Enable Interface** and change the
|
|
description to e.g. TUNNELBROKER before hitting **Save**.
|
|
|
|
The newly created interface must now be set as the default IPv6 gateway
|
|
under :menuselection:`System --> Gateways --> Single` by editing the new gateway entry
|
|
TUNNELBROKER_TUNNELV6 and checking **Default Gateway** before saving.
|
|
|
|
-----------------------------
|
|
Step 3 - Basic Firewall Rules
|
|
-----------------------------
|
|
|
|
Now add basic firewall rules. Since I have a LAN network and a WLAN network, I
|
|
allow WLAN to initiate connections to LAN, but not the other way around. I only
|
|
have servers on LAN whereas most of my clients are on WLAN (Wireless LAN).
|
|
I block all incoming to LAN and WLAN. Of course, outbound connections are fine.
|
|
|
|
.. image:: images/tunnelbroker_fw_rules.png
|
|
:width: 100%
|
|
|
|
--------------------------------
|
|
Step 4 - Configure LAN interface
|
|
--------------------------------
|
|
|
|
Now configure your LAN interface. The static IPv6 address we'll give it is a
|
|
**/64** address from your assigned **/48**. I won't show the WLAN settings simply
|
|
because it's the very same. You'll repeat the same process for further networks,
|
|
but assigning the next interface a separate **/64** address.
|
|
|
|
.. image:: images/tunnelbroker_configure_lan.png
|
|
:width: 100%
|
|
|
|
-------------------------------
|
|
Step 5 - Configure DHCPv6 SLAAC
|
|
-------------------------------
|
|
|
|
We'll next configure OPNsense for Stateless Address Auto Configuration (SLAAC).
|
|
We're going to set up the DHCPv6 service. Go to :menuselection:`Services --> DHCPv6 --> Server`.
|
|
|
|
Simply choose a range for clients to use. Save your settings. Next go to the
|
|
Router Advertisements sub tab on that same page. Set the **Router Advertisements**
|
|
setting to *Assisted* and the **Router Priority** setting to *Normal*.
|
|
|
|
.. image:: images/tunnelbroker_dhcpv6.png
|
|
:width: 100%
|
|
|
|
Save your settings.
|
|
|
|
--------------------------------
|
|
Step 6 - Test your Configuration
|
|
--------------------------------
|
|
|
|
You should now be set up for IPv6. To test your configuration, bring online an
|
|
IPv6 machine, use your favorite tool to determine you have an IPv6 address. If
|
|
you're using SLAAC, it may take up to 30 seconds or more to get an IPv6 address.
|
|
If you see that your interface has an IPv6 address, you can try going to an
|
|
IPv6 only test site, such as http://6.ifconfig.pro/
|