Comcast changes naming convention
Jack Hodgson
hodgson at da4.com
Fri May 2 09:44:26 EDT 2003
I'm no more than an enthusiastic amateur when it comes to network and
system admin, but I just noticed something interesting.
Sometime in the past few days Comcast has made two changes to my
cable modem account settings.
First, after nearly a year, I've been issued a new IP address. That's
not all that remarkable, I've always known it could happen at any
time. But...
Second, they've changed a naming convention that has existed for at
least a couple of years, and which could be useful.
I used to be able to lookup my current IP address by doing a
nslookup h<insert my router MAC num here>.ne.client2.attbi.com
eg: h002078f7bb6d.ne.client2.attbi.com
but now Comcast has changed the naming to
c-<current IP addrs separated by dashes>.ne.client2.attbi.com
eg: c-24-34-217-135.ne.client2.attbi.com
Ah well.
I suspect this is Comcast fixing a weakness in their system that made
it easier for customers to setup dynamic DNS, and thus run evil,
illegal servers.
Is it me, or do these Comcast folks have more tech smarts that the
att/mediaone people?
-- Jack Hodgson
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