How to Prevent Comcast DNS Hijacking
DNS hijacking occurs when the resolution of Domain Name System names is instead redirected to other DNS servers. While this is usually done for malicious purposes, such as "phishing" sensitive account information, Internet Service Providers also do it to drive traffic to their own pages. Comcast deliberately redirects nonexistent or malformed URLs to its own "Domain Helper" service, consisting of a Web page that displays advertisements and alternative search suggestions from other search engines. Comcast subscribers can disable this page by opting-out of the "Domain Helper" service through their "CustomerCentral" user account page.
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Instructions
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Point your Web browser to the Comcast Domain Helper Service opt-out page (see Resources). When prompted, click the "Comcast CustomerCentral" link and log in to your Comcast account.
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Locate "Domain Helper" under "High-Speed Internet Settings" on the "Manage My User Accounts" page. Click "Edit" to access the "Domain Helper" settings.
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Select "Disable Domain Helper" and click "Save." Reboot your computer and your router after disabling the "Domain Helper."
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