It’s possible to configure this yourself, though. There’s a helpful post at the OpenDNS forums that describes how to configure ddclient on an Endian to automatically update an OpenDNS account whenever your dynamic IP address changes.

Here are a few additional notes that may help:

• You don’t need to query an external website for your IP address, since the Endian box already knows it. Set ddclient.conf with “use=if, if=eth0″ (or whichever NIC is your red zone).
• It won’t work if you set “ssl=no”, so you have to leave it set to yes and install the two Perl SSL modules listed in the post.
• Endian doesn’t have an SMTP server installed, so ddclient can’t send you status e-mails. Comment out the “mail” and “mail-failure” lines to avoid errors.
• Make sure you don’t have any spaces in the OpenDNS network label or ddclient conf file.

To test if it’s working, you’ll need to get a new dynamic IP.

• Turn off your cable or dsl modem.
• Spoof the MAC address on the Endian.
  • On your PC, open a command prompt and type “ipconfig /all”. Copy the value of the Physical Address line. It will look something like 00-4D-B7-D3-5F-03.
  • Go to the Network Configuration wizard on the Endian.
  • In step 4, enter your PC’s MAC into the “Spoof MAC address with” field. Change the dashes to colons so that it looks like 00:4D:B7:D3:5F:03.
• Shut down the Endian.
• Turn the modem back on. Wait 15 seconds.
• Turn the Endian back on.

Once you’ve verified it’s working, you can remove the spoof setting by repeating the steps.