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181 lines
6.6 KiB
ReStructuredText
181 lines
6.6 KiB
ReStructuredText
:lastproofread: 2021-06-29
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.. _examples-tunnelbroker-ipv6:
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.. stop_vyoslinter
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#######################
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Tunnelbroker.net (IPv6)
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#######################
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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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Setup initial tunnel
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====================
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Set up initial IPv6 tunnel. Replace the field below from the fields on the
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tunnel information page.
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.. code-block:: none
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conf
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set interfaces tunnel tun0 address Client_IPv6_from_Tunnelbroker # This will be your VyOS install's public IPv6 address
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set interfaces tunnel tun0 description 'HE.NET IPv6 Tunnel'
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set interfaces tunnel tun0 encapsulation 'sit'
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set interfaces tunnel tun0 source-address Client_IPv4_from_Tunnelbroker # This is your public IP
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set interfaces tunnel tun0 mtu '1472'
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set interfaces tunnel tun0 multicast 'disable'
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set interfaces tunnel tun0 remote Server_IPv4_from_Tunnelbroker # This is the IP of the Tunnelbroker server
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set protocols static interface-route6 ::/0 next-hop-interface tun0 # Tell all traffic to go over this tunnel
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commit
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If your WAN connection is over PPPoE, you may need to set the MTU on the above
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tunnel lower than 1472.
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At this point you should be able to ping an IPv6 address, try pinging Google:
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.. code-block:: none
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ping6 -c2 2001:4860:4860::8888
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64 bytes from 2001:4860:4860::8888: icmp_seq=1 ttl=57 time=21.7 ms
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64 bytes from 2001:4860:4860::8888: icmp_seq=2 ttl=57 time=21.1 ms
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--- 2001:4860:4860::8888 ping statistics ---
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2 packets transmitted, 2 received, 0% packet loss, time 1001ms
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rtt min/avg/max/mdev = 21.193/21.459/21.726/0.304 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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.. code-block:: none
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set system name-server 2001:4860:4860::8888 # Google
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set system name-server 2001:4860:4860::8844 # Google
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set system name-server 2606:4700:4700::1111 # Cloudflare
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set system name-server 2606:4700:4700::1001 # Cloudflare
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commit
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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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# ping6 -c2 one.one.one.one
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PING one.one.one.one(one.one.one.one) 56 data bytes
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64 bytes from one.one.one.one: icmp_seq=1 ttl=58 time=16.8 ms
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64 bytes from one.one.one.one: icmp_seq=2 ttl=58 time=17.4 ms
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--- one.one.one.one ping statistics ---
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2 packets transmitted, 2 received, 0% packet loss, time 1001ms
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rtt min/avg/max/mdev = 16.880/17.153/17.426/0.273 ms
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Assuming everything works, you can proceed to the client configuration
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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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Example: `2001:470:xxxx:xxxx::/64`
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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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LANs. Example: `2001:470:xxxx::/48`
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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 eth1 is your LAN interface. Use the /64 (all the xxxx
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should be replaced with the information from your `Routed /64` tunnel):
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.. code-block:: none
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set interfaces ethernet eth1 address '2001:470:xxxx:xxxx::1/64'
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set service router-advert interface eth1 name-server '2001:4860:4860::8888'
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set service router-advert interface eth1 name-server '2001:4860:4860::8844'
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set service router-advert interface eth1 prefix 2001:470:xxxx:xxxx::/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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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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Multiple LAN/DMZ Setup
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======================
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In this, you 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 '2001:4860:4860::8888'
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set service router-advert interface eth1 name-server '2001:4860:4860::8844'
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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 '2001:4860:4860::8888'
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set service router-advert interface eth2 name-server '2001:4860:4860::8844'
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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 '2001:4860:4860::8888'
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set service router-advert interface eth3 name-server '2001:4860:4860::8844'
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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`.
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.. start_vyoslinter
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