Web sites suddenly blocked

[Michael McMurtrey]

I came home from a trip, turned on my computer, and found that I am  
now blocked from certain favorite web sites. I am taken to a page at "www.blocked-website.com 
" which tells me, for example, "Sorry, but (site) is blocked on this  
network. This site was categorized in (category). Contact your network  
administrator." Underneath this message it says "Powered by OpenDNS."


OpenDNS appears to be legitimate, offering parental controls, but  
there are no children in this household, and I do not use their  
services. There are only two computers in the house, my Mac and my  
wife's PC, both connected to the Internet via a router. Neither have  
parental controls activated.


I contacted my provider, Verizon, and they maintain that nothing has  
changed with them and that the problem is in my computer.


Computer is a dual 1.25 GHz MDD PowerPC G4 running OSX 10.5.8. Browser  
is Safari 5.0.6.


What goes on here?


Michael McMurtrey
Carrollton, TX




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Re: Web sites suddenly blocked

[Eric Hall]

It sounds like a DNS hijack. 


Change you dns provider with the instructions here:

https://developers.google.com/speed/public-dns/docs/using

If you don't like google DNS servers, use the one provided by your ISP. 


Eric 




 From: Michael McMurtrey 
To: g3-5-list@googlegroups.com 
Sent: Sunday, April 28, 2013 1:37 PM
Subject: Web sites suddenly blocked
 


I came home from a trip, turned on my computer, and found that I am now blocked 
from certain favorite web sites. I am taken to a page at 
"www.blocked-website.com" which tells me, for example, "Sorry, but (site) is 
blocked on this network. This site was categorized in (category). Contact your 
network administrator." Underneath this message it says "Powered by OpenDNS."

OpenDNS appears to be legitimate, offering parental controls, but there are no 
children in this household, and I do not use their services. There are only two 
computers in the house, my Mac and my wife's PC, both connected to the Internet 
via a router. Neither have parental controls activated.

I contacted my provider, Verizon, and they maintain that nothing has changed 
with them and that the problem is in my computer. 

Computer is a dual 1.25 GHz MDD PowerPC G4 running OSX 10.5.8. Browser is 
Safari 5.0.6.

What goes on here?

Michael McMurtrey
Carrollton, TX




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Re: Web sites suddenly blocked

[johnhios]

Michael McMurtrey wrote:
I came home from a trip, turned on my computer, and found that I am 
now blocked from certain favorite web sites. I am taken to a page at 
"www.blocked-website.com " which tells 
me, for example, "Sorry, but (site) is blocked on this network. This 
site was categorized in (category). Contact your network 
administrator." Underneath this message it says "Powered by OpenDNS."


OpenDNS appears to be legitimate, offering parental controls, but 
there are no children in this household, and I do not use their 
services. There are only two computers in the house, my Mac and my 
wife's PC, both connected to the Internet via a router. Neither have 
parental controls activated.


I contacted my provider, Verizon, and they maintain that nothing has 
changed with them and that the problem is in my computer. 

Computer is a dual 1.25 GHz MDD PowerPC G4 running OSX 10.5.8. Browser 
is Safari 5.0.6.


What goes on here?


Michael McMurtrey
Carrollton, TX




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just a note on this -
times it has happened that some other one has spammed the the "network 
lines" --try to shut down you internet connection or  rest  the modem 
and your problem has gone away.

joho
AthensGr.

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Re: Web sites suddenly blocked

[Kris Tilford]

I think this is likely correct, DNS hijack, however you may need to also change 
these DNS settings within your router itself, it's possible the DNS was 
hijacked at the router level. You'll need to navigate into your router controls 
and find the router DNS settings and use the public Google addresses 8.8.8.8 & 
8.8.4.4 or perhaps OpenDNS setting, or your ISPs DNS routers (this would be the 
default state if you did not assign any DNS addresses and left them blank in 
both the router & computers).


On Apr 28, 2013, at 1:42 PM, Eric Hall wrote:

> It sounds like a DNS hijack. 
> 
> Change you dns provider with the instructions here:
> 
> https://developers.google.com/speed/public-dns/docs/using
> 
> If you don't like google DNS servers, use the one provided by your ISP. 
> 

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Re: Web sites suddenly blocked

[Bruce Johnson]

On Apr 28, 2013, at 11:37 AM, Michael McMurtrey wrote:

> I came home from a trip, turned on my computer, and found that I am now 
> blocked from certain favorite web sites. I am taken to a page at 
> "www.blocked-website.com" which tells me, for example, "Sorry, but (site) is 
> blocked on this network. This site was categorized in (category). Contact 
> your network administrator." Underneath this message it says "Powered by 
> OpenDNS."
> 
> OpenDNS appears to be legitimate, offering parental controls, but there are 
> no children in this household, and I do not use their services. There are 
> only two computers in the house, my Mac and my wife's PC, both connected to 
> the Internet via a router. Neither have parental controls activated.

Is this affecting both computers? Then it's almost certain that the router is 
what's affected. There's a ton of home routers out there that are susceptible 
to a plug-n-play vulnerability that will allow spammers to hijack them.



Here's Cisco's advice: 
Turning off UPnP is 
the first thing. 

I'm at a loss as to how this would lead you to OpenDNS blocking the site (as it 
should, if you're using OpenDNS as your DNS provider), though, as the whole 
point of DNS hijacking is to lead you away from valid DNS services like OpenDNS.

But then, no one ever said these folks were competent...

-- 
Bruce Johnson

"Wherever you go, there you are" B. Banzai,  PhD

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Re: Web sites suddenly blocked

[D. Fabel]

If it isn't a hijack, perhaps your wife has changed your router settings...  ???
Doug


On Apr 28, 2013, at 11:42 AM, Eric Hall wrote:

> It sounds like a DNS hijack. 
> 
> Change you dns provider with the instructions here:
> 
> https://developers.google.com/speed/public-dns/docs/using
> 
> If you don't like google DNS servers, use the one provided by your ISP. 
> 
> Eric 
> 
> From: Michael McMurtrey 
> To: g3-5-list@googlegroups.com 
> Sent: Sunday, April 28, 2013 1:37 PM
> Subject: Web sites suddenly blocked
> 
> I came home from a trip, turned on my computer, and found that I am now 
> blocked from certain favorite web sites. I am taken to a page at 
> "www.blocked-website.com" which tells me, for example, "Sorry, but (site) is 
> blocked on this network. This site was categorized in (category). Contact 
> your network administrator." Underneath this message it says "Powered by 
> OpenDNS."


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Re: Web sites suddenly blocked

[kak]

Or perhaps if you're connected to internet through a wi-fi, you might have 
accidentally linked onto a neighbor's connection that is using the openDNS 
blocker.

(I have been using it personally, and have found it to be helpful in limiting 
teenagers, at least a little bit).

KK


On Apr 28, 2013, at 8:58 PM, D. Fabel  wrote:

> If it isn't a hijack, perhaps your wife has changed your router settings...  
> ???
> Doug
> 
> 
> On Apr 28, 2013, at 11:42 AM, Eric Hall wrote:
> 
>> It sounds like a DNS hijack. 
>> 
>> Change you dns provider with the instructions here:
>> 
>> https://developers.google.com/speed/public-dns/docs/using
>> 
>> If you don't like google DNS servers, use the one provided by your ISP. 
>> 
>> Eric 
>> 
>> From: Michael McMurtrey 
>> To: g3-5-list@googlegroups.com 
>> Sent: Sunday, April 28, 2013 1:37 PM
>> Subject: Web sites suddenly blocked
>> 
>> I came home from a trip, turned on my computer, and found that I am now 
>> blocked from certain favorite web sites. I am taken to a page at 
>> "www.blocked-website.com" which tells me, for example, "Sorry, but (site) is 
>> blocked on this network. This site was categorized in (category). Contact 
>> your network administrator." Underneath this message it says "Powered by 
>> OpenDNS."
> 
> 
> 
> -- 
> -- 
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> Macs.
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>  

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Re: Web sites suddenly blocked

[Dan]

At 4:11 PM -0700 04/28/2013, Bruce Johnson wrote:
I'm at a loss as to how this would lead you to OpenDNS blocking the 
site (as it should, if you're using OpenDNS as your DNS provider), 
though, as the whole point of DNS hijacking is to lead you away from 
valid DNS services like OpenDNS.


Yea.

Doesn't OpenDNS offer a blocking service?  In addition to their 
normal open DNS, I think they have a baby goat-safe DNS, plus a tier 
where you can set your own blocks.  That sounds more like what's 
happened to the OP.


The OP does not provide much in the way of specifics.

Did he use OpenDNS by setting in either his router or his client 
computer(s)?  (this was very common a few years ago, before Verizon 
got their act together and fikked their DNS set-ups).


Which Verizon service?  If it's FiOS then they provide a higher-end 
router that can sniff/block/redirect URLs.  So then who's got the 
admin password?  OP doesn't name the site being blocked, so perhaps 
he's been blocked intentionally?


Does he have one of those annoying malware, er a antivirus, packages 
installed, that can cork him if he even thinks of visiting a funky 
site?  (My housemate has this problem few months, on his peecee.  His 
credit cards get s lonely for the day or two he's corked!).


Exactly what web sites and browser extensions are involved?  etc.

- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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