DDNS Update Tool

Document revision:	1.2 (Fri Mar 05 09:33:48 GMT 2004)
Applies to:	V2.9

General Information

Summary

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.

Specifications

Packages required: advanced-tools
License required: Level1
Command name: /tool dns-update
Standards and Technologies: Dynamic Updates in the DNS (RFC 2136), Secure DNS Dynamic Update (RFC 3007)
Hardware usage: Not significant

Related Documents

Description

Dynamic DNS Update is a tool that should be manually run to update dynamic DNS server.

Note that you have to have a DNS server that supports DNS updates properly configured.

Additional Resources

Dynamic DNS Update

Command name: /tool dns-update

Property Description

address (IP address) - defines IP address associated with the domain name

dns-server (IP address) - DNS server to send update to

key (text; default: "") - authorization key (password of a kind) to access the server

key-name (text; default: "") - authorization key name (username of a kind) to access the server

name (text) - name to attach with the IP address

ttl (integer; default: 0) - time to live for the item (in seconds)

zone (text) - DNS zone where to update the domain name in

Notes

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.

Example

To tell 23.34.45.56 DNS server to (re)associate mydomain name in the myzone.com zone with 68.42.14.4 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=23.34.45.56 name=mydomain \
\... zone=myzone.com address=68.42.14.4 key-name=dns-update-key key=update