BT doesn't like OpenDNS?

[JustInspired]

So yesterday a client picked up his computer after we cleaned it up, removed McAfee remnants and installed ESET Smart Security.

As part of our 'layered approach' we also change the computer's DNS settings to OpenDNS for added security. The PC worked fine here with no Internet issues once our work had been done.

The client called after connecting his computer up at home.
The BT Home Hub (router) was throwing a message up about the computer not being able to connect due to incorrect DNS settings. I wish I had asked him for the exact wording but this was the gist of it.

I walked him through the steps of changing the adapter's DNS settings to auto and everything worked after that!

I have no clue what BT is playing at but thought I'd just mention this just in case someone else might benefit. We've been doing this for a long time and this is the first time it went wrong.

Cheers,
Julian

 

[altrenda]

I know here in the states, ISP's like Charter Cable try to switch you to their DNS servers so that instead of the Server Not Found error, it takes you to their DNS search page, so they get a piece of the search money.
Charter does this at least once a year.

http://hackercodex.com/guide/how-to-stop-isp-dns-server-hijacking/

 

[PBComputer]

I had something similar last week. Tried to connect my laptop to diag a problem, and it wouldnot connect as I was using Google's DNS. Turned out it was BT parental controls blocking it.

Quick factory reset fixed the issue.

 

[JustInspired]

it was BT parental controls blocking it

Ah. Thanks Paul. That's probably it.

 

[Go-To Gordon]

I know here in the states, ISP's like Charter Cable try to switch you to their DNS servers so that instead of the Server Not Found error, it takes you to their DNS search page, so they get a piece of the search money.
Charter does this at least once a year.

http://hackercodex.com/guide/how-to-stop-isp-dns-server-hijacking/

hmm. I'm on charter and use opendns and I've never ran into this.

 

[freedomit]

So yesterday a client picked up his computer after we cleaned it up, removed McAfee remnants and installed ESET Smart Security.

As part of our 'layered approach' we also change the computer's DNS settings to OpenDNS for added security. The PC worked fine here with no Internet issues once our work had been done.

The client called after connecting his computer up at home.
The BT Home Hub (router) was throwing a message up about the computer not being able to connect due to incorrect DNS settings. I wish I had asked him for the exact wording but this was the gist of it.

I walked him through the steps of changing the adapter's DNS settings to auto and everything worked after that!

I have no clue what BT is playing at but thought I'd just mention this just in case someone else might benefit. We've been doing this for a long time and this is the first time it went wrong.

Cheers,
Julian

I understand why you change the DNS but what if the customer has print and files sharing, maybe even a mini network? When they get home the PC won't resolve any local names?

 

[altrenda]

hmm. I'm on charter and use opendns and I've never ran into this.

I have been on Charter for years and at least once a year I get switched to the Web Helper.
https://www.myaccount.charter.com/customers/support.aspx?SupportArticleID=2626

 

[JustInspired]

I understand why you change the DNS but what if the customer has print and files sharing, maybe even a mini network? When they get home the PC won't resolve any local names?

Indeed.
That is why I find out what the client's needs and set up is beforehand. This is one pc with a USB printer.

 

[Markverhyden]

hmm. I'm on charter and use opendns and I've never ran into this.

I've had a few random failures using anything but the ISP's DNS. But just with residential accounts.

 

[Markverhyden]

I understand why you change the DNS but what if the customer has print and files sharing, maybe even a mini network? When they get home the PC won't resolve any local names?

In a typical configuration public/ISP DNS is used for publicly routable IP's. Has nothing to do with the LAN unless you have internal services. In those cases you can setup an internal DNS server to handle those things if your router/ISP service cannot handle hairpin turn DNS.

 

[PCSupportGlasgow]

half the time BT doesn't like its' own DNS servers

 

[Martyn]

half the time BT doesn't like its' own DNS servers

I'm very suspicious about BT's DNS servers after a recent incident. I'm not sure if I posted about it in the past but if not I will post about it in the Tech Only forum if not.