[GRLUG] Comcast & dynamic DNS

[David Pembrook]

This seems most odd.. you say a letter as in snail mail?

By looking at your traffic they would be able to detect that.. Your DNS 
server would be connecting to dns servers all over the world on a 
specific port number. Easy to detect.

Why anyone with a small lan and a spare computer wouldn't run dns is 
beyond me given the benefits.

Dave

john-thomas richards wrote:
> I received a letter from Comcast (addressed directly to me) that indicated I
> have to reconfigure my system to utilize dynamic DNS rather than specifying my
> own DNS servers.  I wonder if this is a general letter sent to all Comcast
> customers or if Comcast somehow knows I do not use their lousy DNS servers.
> The letter stated that I could lose my connectivity if I failed to reconfigure
> (I believe it used this language; I could be mistaken since I am relying on my
> memory).  Is it possible for Comcast to know with certainty how my system is
> configured for DNS?  (I use a Linksys route provided by Vonage.)
>