Manual:Tools/Dynamic DNS

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Revision as of 14:14, 29 October 2009 by Marisb (talk | contribs) (Created page with '{{Versions|2.9, v3, v4}} <div class=manual> <h2>Summary</h2> <p><b>Sub-menu:</b> <code>/tool dns-update</code></p> <p><b>Standards:</b> <code>RFC 2136, RFC 3007</code></p> <br …')
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Applies to RouterOS: 2.9, v3, v4


Sub-menu: /tool dns-update

Standards: RFC 2136, RFC 3007

Dynamic DNS Update Tool gives a way to keep domain name pointing to dynamic IP address. It works by sending domain name system update request to name server, which has a zone to be updated. Secure DNS updates are also supported.

The DNS update tool supports only one algorithm - hmac-md5. It's the only proposed algorithm for signing DNS messages.


Property Description
address (IP; Default: ) Defines IP address associated with the domain name.
dns-server (IP; Default: ) DNS server to send update to.
key (string; Default: ) Authorization key to access the server.
key-name (string; Default: ) Authorization key name (like a username) to access the server.
name (string; Default: ) Name to attach with the IP address.
ttl (integer; Default: 0) Time to live for the item (in seconds).
zone (string; Default: ) DNS zone where to update the domain name in.

Note that the system clock time on your router can't differ from the DNS server's time more than 5 minutes. Otherwise the DNS server will ignore this request.


To tell DNS server to (re)associate mydomain name in the zone with IP address specifying that the name of the key is dns-update-key and the actual key is update:

[admin@MikroTik] tool> dns-update dns-server= name=mydomain \
\... address= key-name=dns-update-key key=update