mirror of https://github.com/opnsense/docs
Write page about Dynamic DNS (#145)
Michael Steenbeek
5 years ago
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Ad Schellevis
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.. |br| raw:: html
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<br>
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===========
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Dynamic DNS
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===========
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Normally, a hostname is tied to a fixed IP address. This works well if the server the hostname is used for has a
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static IP address. However, a static IP address is not always an option. In order to tie a hostname to a dynamic
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IP address, a Dynamic DNS service can be used.
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-------------------------------
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Setting up a dynamic IP address
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-------------------------------
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In the web interface, go to :menuselection:`Services --> Dynamic DNS`. In the upper right corner, click **Add**.
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A form will now appear with the following fields:
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======================= =======================================================================================================================================================================
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Field Explanation
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======================= =======================================================================================================================================================================
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Enable Enable this rule (allows turning entries off without removing them).
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Service type The provider of your Dynamic DNS Service. If you use one not in the list, select “Custom” or “Custom (v6)”.
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Interface to monitor This will usually be WAN.
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Hostname Enter the complete host/domain name. For example: *myhost.dyndns.org*
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MX Set this option only if you need a special MX record. Not all services support this. Note: with a dynamic DNS service you can only use a hostname, not an IP address.
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Wildcards Enable Wildcard
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Verbose logging Enable verbose logging
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Username Username is required for all types except Namecheap, FreeDNS and Custom Entries.
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Password
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Description A description to easily identify this rule in the overview.
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======================= =======================================================================================================================================================================
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If you select “Custom” or “Custom (v6)” under “Service type”, more fields will appear:
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=============================== =============================================================================================================================================================================================================================
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Field Explanation
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=============================== =============================================================================================================================================================================================================================
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Interface to send update from Most likely to be the same as “Interface to monitor”.
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CURL options Options passed to the ``curl`` command. These include `Verify SSL peer <https://curl.haxx.se/libcurl/c/CURLOPT_SSL_VERIFYPEER.html>`_ and `Force IPv4 resolving <https://curl.haxx.se/libcurl/c/CURLOPT_IPRESOLVE.html>`_.
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Update URL An URL to let the Dynamic DNS provider know your IP address has changed. See the “full help” for information on how to use it.
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Result Match Can be used to verify the reply from the server, in order to distinguish confirmations from errors. See the “full help” for information on how to use it.
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=============================== =============================================================================================================================================================================================================================
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^^^^^^^^^^^^^^^^^^^^^^
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Provider-specific info
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^^^^^^^^^^^^^^^^^^^^^^
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+------------------------------+------------------------------------------------------------------------------------------+
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| Provider | Specifics |
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+==============================+==========================================================================================+
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| Custom / Custom (v6) | Username and Password fields represent HTTP Basic Authentication username and passwords. |
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+------------------------------+------------------------------------------------------------------------------------------+
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| Duck DNS | Username field: Enter your Token. |br| |
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| | Password field: Leave empty. |
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+------------------------------+------------------------------------------------------------------------------------------+
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| FreeDNS (freedns.afraid.org) | Password field: Enter your “Authentication Token”. |
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+------------------------------+------------------------------------------------------------------------------------------+
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| he.net tunnelbroker | Hostname field: Enter your “Tunnel ID”.
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+------------------------------+------------------------------------------------------------------------------------------+
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| Route 53 | Username field: Enter your “Access Key ID”. |br| |
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| | Password field: Enter your “Secret Access Key”. |
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+------------------------------+------------------------------------------------------------------------------------------+
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