Basic Internet Connectivity And Modem Help

[tdfaber]

I was a long time AT&T DSL customer.  I have a linksys router and have been using OpenDNS for a long time to filter out the content that I do not want my kids to get to.  Since I switched to Comcast, the OpenDNS filters do not work because the DNS server address of 75.75.75.75 is has found its way into my home network.  How can I disable this and use OpenDNS servers only?

[EG]

That's one of CC's new DNSSec servers. If you don't wish to use it then go here for instructions for the OpenDNS offering;

https://store.opendns.com/setup/

[tdfaber]

Have been using Open DNS for years.  The only DNS servers entries in my Linksys router are those of OpenDNS (208.67.222.222 and 208.67.220.220) but when I look at the Network connection properties on my laptop it shows a third server 75.75.75.75.  Where is my computer puling this from?  How do i stop it?  I am quite sure that this DNS server is allowing requests for content that that would normally be filtered by OpenDNS to get into my home.  How do I stop it?

[Barmar]

It sounds like the router is passing along the DNS IP it gets from Comcast using DHCP, in addition to the ones you've configured manually. I don't know if there's a way to stop it from doing this. So instead, I suggest you configure the DNS manually on your PC, pointing it to the OpenDNS servers.

[tdfaber]

This works for the PC ... but does not work to block content on other devices ie. IPods, PSPs, or smart phones with wifi

[andyross]

Does your router allow you to enter 3 addresses? If so, try just re-entering one of the others as the 3rd.

[docdoyle]

Create a kids user account in windows, only adding "kids" to the users group. By default administrators are able to change dns, users are not granted access.