DynDNS.org
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DynDNS.org
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Open the http://www.dyndns.org website and select the option to create your own account. Finish the process and study the DynDNS.org documentation on how to setup your account, password, hosts and the URL-string to use in Simple Failover. You can find this information in the Update Syntax section. 
Write down this information and later in this example we will substitute the information with our own example details. Add a host to your account. 
Add your domain name to the list. 
In Simple Failover insert a new Server Set. Follow the instructions from the Server Set Properties section to setup the information on the Servers tab on the Server Set Properties dialog. 
To identify the Name Server you are going to update from Simple Failover, first execute the command nslookup -type=NS dyndns.org from a command prompt: 
Remember: Only resolve the parent domain name i.e. dyndns.org. You should not resolve child domain names e.g. the web-server name or the FTP server name. Select the "primary" Domain Name Server. In this example it is ns1.dyndns.org with the IP address 63.208.196.90. Select the Update DNS tab, and check-mark the field: Update DNS (off=monitoring only). Click the Add… button to enter the DNS server properties. 
The following information has to be entered into the DNS Server Properties dialog: 
Note: You are only able to see part of the Update URL string as displayed in this screen shot. The DNS server is found by clicking the Look Up button and in the field write: ns1.dyndns.org as found earlier via the nslookup command and click OK. Simple Failover resolves the DNS server name into an IP address. Now it is time to use the information you found on the Update Syntax page of DynDNS.org. Fill the correct formatted information into the Update URL field. The string is entered on one line with no line breaks. https://members.dyndns.org/nic/update?system=dyndns&hostname=$DOM$&myip=$IP$&wildcard=OFF&offline=NO IMPORTANT: The IP address is normally entered in the string myip=ipaddress& in clear text but it is now substituted with the string myip=$IP$& where the IP address is provided by Simple Failover through the variable $IP$. Simple Failover insert the correct IP address found on the Servers tab. Enter the User ID and Password. These are equivalent to your DynDNS.org account. The string to enter into the Success text field is found in the DynDNS.org documentation or by performing an update test from a browser and then look for a recognizable string. This is the resulting page from DynDNS.org: 
In this example the string you want to look for is the string good. The Server Sets tab might look like this after you have configured the Server Set. 
In case of an update request performed by Simple Failover then DynDNS.org returns a web page (in the background) with the result of an update request of the HTTP-based DNS database now pointing to the Web server at IP address 107.86.11.37. The update is acknowlegded because Simple Failover found the string good in the response from DynDNS.org. |
