mirror of
https://github.com/vyos/vyos-documentation.git
synced 2025-11-04 00:02:05 +01:00
153 lines
3.6 KiB
ReStructuredText
153 lines
3.6 KiB
ReStructuredText
Dynamic DNS
|
|
-----------
|
|
|
|
VyOS is able to update a remote DNS record when an interface gets a new IP
|
|
address. In order to do so, VyOS includes ddclient_, a perl script written for
|
|
this exact purpose.
|
|
|
|
ddclient_ uses two methods to update a DNS record. The first one will send
|
|
updates directly to the DNS daemon, in compliance with RFC2136_. The second
|
|
one involves a third party service, like DynDNS.com or any other similar
|
|
website. This method uses HTTP requests to transmit the new IP address. You
|
|
can configure both in VyOS.
|
|
|
|
VyOS CLI and RFC2136
|
|
^^^^^^^^^^^^^^^^^^^^
|
|
|
|
First, create an RFC2136_ config node :
|
|
|
|
.. code-block:: sh
|
|
|
|
edit service dns dynamic interface eth0 rfc2136 <confignodename>
|
|
|
|
Present your RNDC key to ddclient :
|
|
|
|
.. code-block:: sh
|
|
|
|
set key /config/dyndns/mydnsserver.rndc.key
|
|
|
|
Set the DNS server IP/FQDN :
|
|
|
|
.. code-block:: sh
|
|
|
|
set server dns.mydomain.com
|
|
|
|
Set the NS zone to be updated :
|
|
|
|
.. code-block:: sh
|
|
|
|
set zone mydomain.com
|
|
|
|
Set the records to be updated :
|
|
|
|
.. code-block:: sh
|
|
|
|
set record dyn
|
|
set record dyn2
|
|
|
|
You can optionally set a TTL (note : default value is 600 seconds) :
|
|
|
|
.. code-block:: sh
|
|
|
|
set ttl 600
|
|
|
|
This will generate the following ddclient config blocks:
|
|
|
|
.. code-block:: sh
|
|
|
|
server=dns.mydomain.com
|
|
protocol=nsupdate
|
|
password=/config/dyndns/mydnsserver.rndc.key
|
|
ttl=600
|
|
zone=mydomain.com
|
|
dyn
|
|
server=dns.mydomain.com
|
|
protocol=nsupdate
|
|
password=/config/dyndns/mydnsserver.rndc.key
|
|
ttl=600
|
|
zone=mydomain.com
|
|
dyn2
|
|
|
|
You can also keep a different dns zone updated. Just create a new config node:
|
|
|
|
.. code-block:: sh
|
|
|
|
edit service dns dynamic interface eth0 rfc2136 <confignode2>
|
|
|
|
VyOS CLI and HTTP dynamic DNS services
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
VyOS is also able to use any service relying on protocols supported
|
|
by ddclient.
|
|
|
|
To use such a service, you must define a login, a password, one or multiple
|
|
hostnames, a protocol and a server.
|
|
|
|
.. code-block:: sh
|
|
|
|
edit service dns dynamic interface eth0 service HeNet
|
|
set login my-login # set password my-password
|
|
set host-name my-tunnel-id
|
|
set protocol dyndns2
|
|
set server ipv4.tunnelbroker.net
|
|
|
|
VyOS is also shipped with a list of known services. You don't need to set the
|
|
protocol and server value as VyOS has defaults provided for those. These are
|
|
the services VyOS knows about:
|
|
|
|
* afraid
|
|
* changeip
|
|
* dnspark
|
|
* dslreports
|
|
* dyndns
|
|
* easydns
|
|
* namecheap
|
|
* noip
|
|
* zoneedit
|
|
|
|
To use DynDNS for example:
|
|
|
|
.. code-block:: sh
|
|
|
|
edit service dns dynamic interface eth0 service dyndns
|
|
set login my-login
|
|
set password my-password
|
|
set host-name my-dyndns-hostname
|
|
|
|
It's possible to use multiple services :
|
|
|
|
.. code-block:: sh
|
|
|
|
edit service dns dynamic interface eth0 service dyndns
|
|
set login my-login
|
|
set password my-password
|
|
set host-name my-dyndns-hostname
|
|
edit service dns dynamic interface eth0 service HeNet
|
|
set login my-login
|
|
set password my-password
|
|
set host-name my-tunnel-id
|
|
set protocol dyndns2
|
|
set server ipv4.tunnelbroker.net
|
|
|
|
ddclient behind NAT
|
|
^^^^^^^^^^^^^^^^^^^
|
|
|
|
By default, ddclient will update a dynamic dns record using the IP address
|
|
directly attached to the interface. If your VyOS instance is behind NAT, your
|
|
record will be updated to point to your internal IP.
|
|
|
|
ddclient_ has another way to determine the WAN IP address. This is controlled
|
|
by these two options:
|
|
|
|
.. code-block:: sh
|
|
|
|
set service dns dynamic interface eth0 use-web url
|
|
set service dns dynamic interface eth0 use-web skip
|
|
|
|
ddclient_ will load the webpage at `[url]` and will try to extract an IP
|
|
address for the response. ddclient_ will skip any address located before the
|
|
string set in `[skip]`.
|
|
|
|
|
|
.. include:: references.rst
|