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Comcast Network Problem Strands Some Users

I've spoken with quite a few people from the Washington area who say they have experienced problems over the past week getting online with Comcast's high-speed Internet service.

Comcast says the problem is related to its "DNS servers," the machines that facilitate Internet traffic by translating Web site names, such as, into numeric Internet protocol numbers. The outages have affected Comcast customers around the country for the past three days, and have lasted anywhere from three to five hours, mostly during the evening. has a bunch of useful threads in its Comcast forum, including one post that many users say has helped them to avoid being incovenienced by the latest outages. We should note that Comcast advises its customers against doing what that post suggests, which involves using another Internet service provider's DNS servers.

In case anyone was curious, the SANS Internet Storm Center issued a statement on April 8 saying they are confident that Comcast's DNS woes are unrelated to the DNS poisoning attacks the group (and others) have monitored online lately.

By Brian Krebs  |  April 15, 2005; 2:11 PM ET
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