DNS

DNS has a hole in it. Bad guys are working on exploits right now. Patches are available right now. Anyone responsible for a DNS server needs to exercise that responsibility. Right now.
Dan Kaminsky found a security hole in DNS recently, the details of which he was keeping quiet so providers could fix and release patches […]

Well this is a real eye opener! Imagine discovering that some codec a client of yours downloads and installs manages to change the DNS settings for their router. Talk about a gateway into a ton of trouble! And despite countless warnings, we are only now hearing about it actually happening - is it luck? Regardless […]

This past weekend, I spent time setting up four new laptops for one of my business clients. Out of habit, one of the things I do when I get to the point of setting up e-mail is send test messages. I didn’t have any reason to believe that e-mail wouldn’t work, but I’m glad I […]

A while back, I’d written a post about one of my customers I’d help transition from one ISP (DSL.net) to another (Comcast) for Internet connectivity at their small office. After that was completed, I thought they would be in a position to cut ties with their old ISP and stop paying for services they no […]

IPv6 has been around for something on the order of 15 years, yet it has yet to see widespread adoption. It was recently enabled on Internet core DNS infrastructure, and had been adopted in some network like those operated by certain mobile carriers. The current IP addressing and allocation scheme, dubbed IPv4, will eventually run […]

Today, Joey asks:
Hi I’m trying to install a new wireless version of BT broadband but every time I do it won’t let me due to an error in the DNS cache.
I’ve tried using command prompt and typing in “ipconfig /flushdns” but it says that the function failed during execution. I’ve already tried rebooting my laptop […]