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Rodolfo J. Paiz wrote:

>>when a machine whose DHCP_HOSTNAME is caspar is assigned 192.168.1.11,
>>DNS gets changed so that 192.168.1.11 resolves to caspar.spotnet.org.
>>Well, ok, but this is only going to work in very limited circumstances
>>- -- i.e., a small, private network where you alone control DNS caching,
>>which you say is the case for you,
>(say, the boss gets a new computer and the hostname/MAC address changes but 
>he still wants to share his Zip drive) and this *is* important to millions 
>of people.

Boss is still going to have to configure a hostname, and it's not much
more work than that to set the IP address.

>Yeah, sort of... take another example. I regularly host Counterstrike and 
>Quake games at my house. Four people at the dinner table, two in the living 
>room, three outside at a table, all new to the house. It would be freaking 
>*great* to "ping bob" or know that Jane is the Quake server without 
>reconfiguring my network.

*lol* ... I guess it's all about priorities, Brother Paiz.

>I do not believe this kind of thing has any use being on public networks. 
>However, the number of private networks for which this would be considered 
>a gift from Heaven is stunning. 

And it would (should) be considered a grave security breach on said
networks.  I hope you're not using NFS, for example, because if you're
allowing clients to modify DNS in an environment which uses host-based
auth, you're in deep doodoo.  Ditto if you're using SSH, which won't
know which way is up because it cannot correlate a key with an address
when they're dynamic, which means you get to train your users to ignore
the key warnings and make themselves vulnerable to MitM attacks.  

>Note that easier administration of stuff like this also lowers TCO and
>helps to reduce the bar people need to jump over when moving to Linux
>while *not* reducing functionality. It's an option, and a damn good
>one.

I'm all for those goals, but I think there are better and safer ways to
meet them.  The idea of dynamic DNS for resource servers gives me the
willies.  But like I said, whatever makes you Quake.  ;-)

- -d

- -- 
David Talkington

PGP key: http://www.prairienet.org/~dtalk/0xCA4C11AD.pgp

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