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208 lines
6.6 KiB
ReStructuredText
208 lines
6.6 KiB
ReStructuredText
.. _examples-tunnelbroker-ipv6:
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#######################
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Tunnelbroker.net (IPv6)
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#######################
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| Testdate: 2021-12-30
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| Version: 1.4-rolling-202112211328
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This guide walks through the setup of https://www.tunnelbroker.net/ for an
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IPv6 Tunnel.
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Prerequisites
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=============
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- A public, routable IPv4 address. This does not necessarily need to be static,
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but you will need to update the tunnel endpoint when/if your IP address
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changes, which can be done with a script and a scheduled task.
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- Account at https://www.tunnelbroker.net/
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- Requested a "Regular Tunnel". You want to choose a location that is closest
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to your physical location for the best response time.
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********
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Topology
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********
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The example topology has 2 VyOS routers. One as The WAN Router and on as a
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Client, to test a single LAN setup
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.. image:: _include/topology.png
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:alt: Tunnelbroker topology image
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*************
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Configuration
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*************
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First, we configure the ``vyos-wan`` interface to get a DHCP address.
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.. literalinclude:: _include/vyos-wan.conf
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:language: none
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Now we are able to setup the tunnel interface.
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.. literalinclude:: _include/vyos-wan_tun0.conf
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:language: none
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:lines: 1-5
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Setup the ipv6 default route to the tunnel interface
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.. literalinclude:: _include/vyos-wan_tun0.conf
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:language: none
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:lines: 7
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Now you should be able to ping a public IPv6 Address
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.. code-block:: none
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vyos@vyos-wan:~$ ping 2001:470:20::2 count 4
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PING 2001:470:20::2(2001:470:20::2) 56 data bytes
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64 bytes from 2001:470:20::2: icmp_seq=1 ttl=64 time=31.2 ms
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64 bytes from 2001:470:20::2: icmp_seq=2 ttl=64 time=30.2 ms
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64 bytes from 2001:470:20::2: icmp_seq=3 ttl=64 time=31.0 ms
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64 bytes from 2001:470:20::2: icmp_seq=4 ttl=64 time=30.8 ms
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--- 2001:470:20::2 ping statistics ---
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4 packets transmitted, 4 received, 0% packet loss, time 3004ms
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rtt min/avg/max/mdev = 30.221/30.820/31.246/0.385 ms
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Assuming the pings are successful, you need to add some DNS servers.
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Some options:
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.. literalinclude:: _include/vyos-wan_tun0.conf
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:language: none
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:lines: 13
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You should now be able to ping something by IPv6 DNS name:
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.. code-block:: none
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vyos@vyos-wan:~$ ping tunnelbroker.net count 4
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PING tunnelbroker.net(tunnelbroker.net (2001:470:0:63::2)) 56 data bytes
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64 bytes from tunnelbroker.net (2001:470:0:63::2): icmp_seq=1 ttl=54 time=179 ms
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64 bytes from tunnelbroker.net (2001:470:0:63::2): icmp_seq=2 ttl=54 time=180 ms
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64 bytes from tunnelbroker.net (2001:470:0:63::2): icmp_seq=3 ttl=54 time=180 ms
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64 bytes from tunnelbroker.net (2001:470:0:63::2): icmp_seq=4 ttl=54 time=180 ms
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--- tunnelbroker.net ping statistics ---
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4 packets transmitted, 4 received, 0% packet loss, time 3004ms
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rtt min/avg/max/mdev = 179.221/179.943/180.340/0.427 ms
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*****************
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LAN Configuration
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*****************
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At this point, your VyOS install should have full IPv6, but now your LAN devices
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need access.
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With Tunnelbroker.net, you have two options:
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- Routed /64. This is the default assignment. In IPv6-land, it's good for a
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single "LAN", and is somewhat equivalent to a /24.
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- Routed /48. This is something you can request by clicking the "Assign /48"
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link in the Tunnelbroker.net tunnel config. It allows you to have up to 65k
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Unlike IPv4, IPv6 is really not designed to be broken up smaller than /64. So
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if you ever want to have multiple LANs, VLANs, DMZ, etc, you'll want to ignore
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the assigned /64, and request the /48 and use that.
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Single LAN Setup
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================
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Single LAN setup where eth2 is your LAN interface. Use the Tunnelbroker
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Routed /64 prefix:
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.. literalinclude:: _include/vyos-wan_tun0.conf
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:language: none
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:lines: 9-11
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Please note, 'autonomous-flag' and 'on-link-flag' are enabled by default,
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'valid-lifetime' and 'preferred-lifetime' are set to default values of
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30 days and 4 hours respectively.
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And the ``client`` to receive an IPv6 address with stateless autoconfig.
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.. literalinclude:: _include/client.conf
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:language: none
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This accomplishes a few things:
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- Sets your LAN interface's IP address
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- Enables router advertisements. This is an IPv6 alternative for DHCP (though
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DHCPv6 can still be used). With RAs, Your devices will automatically find the
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information they need for routing and DNS.
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Now the Client is able to ping a public IPv6 address
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.. code-block:: none
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vyos@client:~$ ping 2001:470:20::2 count 4
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PING 2001:470:20::2(2001:470:20::2) 56 data bytes
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64 bytes from 2001:470:20::2: icmp_seq=1 ttl=63 time=32.3 ms
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64 bytes from 2001:470:20::2: icmp_seq=2 ttl=63 time=31.1 ms
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64 bytes from 2001:470:20::2: icmp_seq=3 ttl=63 time=30.2 ms
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64 bytes from 2001:470:20::2: icmp_seq=4 ttl=63 time=31.6 ms
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--- 2001:470:20::2 ping statistics ---
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4 packets transmitted, 4 received, 0% packet loss, time 3005ms
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rtt min/avg/max/mdev = 30.234/31.293/32.269/0.748 ms
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Multiple LAN/DMZ Setup
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======================
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That's how you can expand the example above.
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Use the `Routed /48` information. This allows you to assign a
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different /64 to every interface, LAN, or even device. Or you could break your
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network into smaller chunks like /56 or /60.
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The format of these addresses:
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- `2001:470:xxxx::/48`: The whole subnet. xxxx should come from Tunnelbroker.
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- `2001:470:xxxx:1::/64`: A subnet suitable for a LAN
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- `2001:470:xxxx:2::/64`: Another subnet
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- `2001:470:xxxx:ffff:/64`: The last usable /64 subnet.
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In the above examples, 1,2,ffff are all chosen by you. You can use 1-ffff
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(1-65535).
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So, when your LAN is eth1, your DMZ is eth2, your cameras are on eth3, etc:
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.. code-block:: none
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set interfaces ethernet eth1 address '2001:470:xxxx:1::1/64'
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set service router-advert interface eth1 name-server '2001:470:20::2'
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set service router-advert interface eth1 prefix 2001:470:xxxx:1::/64
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set interfaces ethernet eth2 address '2001:470:xxxx:2::1/64'
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set service router-advert interface eth2 name-server '2001:470:20::2'
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set service router-advert interface eth2 prefix 2001:470:xxxx:2::/64
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set interfaces ethernet eth3 address '2001:470:xxxx:3::1/64'
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set service router-advert interface eth3 name-server '2001:470:20::2'
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set service router-advert interface eth3 prefix 2001:470:xxxx:3::/64
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Please note, 'autonomous-flag' and 'on-link-flag' are enabled by default,
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'valid-lifetime' and 'preferred-lifetime' are set to default values of
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30 days and 4 hours respectively.
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Firewall
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========
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Finally, don't forget the :ref:`firewall`. The usage is identical, except for
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instead of `set firewall name NAME`, you would use `set firewall ipv6-name
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NAME`.
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Similarly, to attach the firewall, you would use `set interfaces ethernet eth0
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firewall in ipv6-name` or `set zone-policy zone LOCAL from WAN firewall
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ipv6-name`. |