I SETUP OPEN DNS FOR MY SCHOOL- GOOGLE FOR EDUCATION STARTED BLOCKING US WITH A "UNUSAL ACTIVITY ERROR"
Hi everyone,
so here is my issue.
I wanted to test and possibly implement this at our school.
I have about 150 chromebooks on a subdomain - controlled via a ubiquiti ER PRO 8 Router. ( 192.168.17.x /24)
now I changed the DNS settings on the router to the OPEN DNS settings, after setting up an account with open dns.
when i tested with couple of devices (5) it worked awesome.
School started monday, everything was fine..and then about mid day..every one in our school including people on other domains started getting " Unusual activity error from Google which requires a captcha verification" This captcha verification was doable on desktops..but on chromebooks the captcha wasn't showing up..oh god the horror!!.
So i changed the DNS settings back to Google DNS. And connected the Goddam barracuda back again. ( i hate the barracuda T.T). Its slow as hell.
I am new to this..am i doing something wrong...or does the issue stem from the fact that open dns is a public service.
but still i thought it should be a safe service.
Any Help would be greatly appreciated.
Warm Regards
Vik
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"I wanted to test and possibly implement this at our school."
But you know that OpenDNS is licensed for home use only, do you? The commercial equivalent is Cisco Umbrella.
https://umbrella.cisco.com/products/packages"Unusual activity error from Google which requires a captcha verification"
This does not really sound like related to DNS in general (or OpenDNS in particular), but rather like a Google issue.
See e.g. https://support.google.com/websearch/answer/86640?hl=en
https://www.lifewire.com/unusual-traffic-from-computer-network-errors-3968165
https://www.webnots.com/fix-im-not-a-robot-captcha-issue-in-google-search/
...and many more."does the issue stem from the fact that open dns is a public service"
Not at all. Google Public DNS is as public as OpenDNS. As I said, this doesn't seem to be related to DNS, but the blocking by Google and configuring OpenDNS happened just by coincidence.
"but still i thought it should be a safe service."
What do you mean by this, and what is "it"? Google Education, Google Public DNS, or OpenDNS? These all pretend to be "safe services". And especially Google blocking "unusual activity" is a kind of effort to make their services safer.
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