D-Link Routers Now Come With CAPTCHA – But is Your Home Server Blocked?

Interesting to see that D-Link are now putting in an extra layer of security on their routers, which now require users to complete a CAPTCHA test (you know, those “type in the letters you see in this box” type tests) whenever any settings are changed.

In the short term, this may well knock out Windows Home Server’s automatic configuration capabilities for D-Link’s routers, which will suck, but I’m sure it’s done with good intentions.

If you have a D-Link router and want to upgrade to the new level of security, you can do so at http://support.dlink.com – apparently, the DIR-615, DIR-625, DIR-628, DIR-655, DIR-825, DIR-855, DIR-685, and DGL-4500 are now supported.

If you’ve tried out D-Link’s new system with your home server, let us know how it works. For everyone else, here’s the announcement from D-Link.

D-LINK FIRST TO ADD CAPTCHA TO ITS HOME ROUTERS TO HELP PREVENT AGAINST ATTACKS

Additional Safety Measure Helps Defend Computers from Worms, Viruses and Other Growing Security Threats

FOUNTAIN VALLEY, Calif., May 12, 2009 – A series of recent Internet security attacks on home and small office computers are compromising networks where users least expect it – their routers. These malicious software invasions, in which users unknowingly download a Trojan horse when performing common tasks, invade the router to detect wireless capabilities, then alter the victim’s domain name system (DNS) records so that all future traffic is diverted through the, attackers’ network first.

In response to the growing number of these attacks and subsequent user security concerns, D-Link has integrated CAPTCHA – a system, designed to detect whether responses are human or computer-generated – into its popular home and small office routers as an extra safety measure. CAPTCHAs are used to prevent malicious software from performing actions that degrade the quality of service on a network, such as those found in worms, viruses and Trojan horses.

The term CAPTCHA is an acronym for Completely Automated Public Turing test to tell Computers and Humans Apart. CAPTCHA is a type of challenge-response test used in computing to ensure that responses are generated by humans, not computers. A common type of CAPTCHA requires the user to type letters or numbers from a distorted image that appears on the screen.

“Unlike other brands, the majority of D-Link® routers are not as easy to be compromised since our design is proprietary. However, we’re excited to be the first in the market to announce we have taken the initiative to implement CAPTCHA into our routers, thus providing yet another layer of security to our customers,” said AJ Wang, chief technology officer of D-Link.

Popular D-Link router models that now feature CAPTCHA include the DIR-615, DIR-625, DIR-628, DIR-655, DIR-825, DIR-855, DIR-685, and DGL-4500. To upgrade routers with CAPTCHA, customers need to visit support.dlink.com to download the upgrade.


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About Terry Walsh

Terry Walsh is the founding editor and owner of We Got Served. Since February 2007, the site has provided detailed coverage and analysis of the emerging home server category, and has subsequently grown into a trusted outlet for digital home news and reviews.

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  • The Lynx Effect

    I installed firmware 1.31 on my DIR-655 last night. Be warned, if you install 1.31 you cannot revert back to 1.21. I like the idea of the CAPTCHA however i found it to be rather on the small side and difficult to read. Hence why I have now turned the feature off. Since installing this firmware I have also had to manually add my ports as there seems to now be an issue with UPnP. After about 30mins WHS would complains and I was having to run the repair wizard.

    • Craig

      Same thing here. What did you do to resolve it? I have my whs in the DMZ and I still can't access it remotely.

  • kboxvegas

    CAPTCHA is the most annoying thing in the world period. When faced with some of these images I will simply leave the site as it is not worth the frustration of dealing with it.

    Example: Forums which require a CAPTCHA entry everytime you want to do a search.

  • CSM3

    I also have a Dlink DIR-655 and upgraded to 1.31. Before doing so (1.21 and below), access to my WHS was fine. After upgrading, I got the "Verifying Port Forwarding…" error and no access. I would run the repair 2x, and it would solve the problem for about 10 minutes. I disabled the CAPTCHA, but that didn't help. I had to forward ports 80 and 443 to get it working again. Have not forwarded RDP port yet. I too will leave the CAPTCHA off as I find the letters to difficult to discern. Though somewhat off topic, but still dealing with this router, I have discovered with two firmware upgrades that the backing up and attempt to restore your settings fails. You get the wonderful duty of doing it all over again manually.

  • JohnCz

    I think this is a really bad idea..i'll be staying away from DLink routers.

  • Firewater88

    I have the DGl-4300 and it is not supported (yet) for the new firmware. It sounds from these posts, that I would not upgrade if it becomes available to my router. Sounds like a lot of work for nothing

  • Qu3

    If you are worried about security first thing you should turn off it UPNP and port forward as standard..

  • Jonathan

    Anyone with the DIR-855 try the new firmware?

  • MitchSchaft

    I have the DIR-655. I've always had to manually forward ports, so UPnP not working wasn't a surprise. I turned off captcha because it's a waste of time. My router works fine as it always has.

  • hatesdlink

    the captcha doesnt even work, (no matter what credentials you feed it); always will return a 'authentication failed' and its a pain to turn off with telnet.