Re: [dhcwg] DHCP Option for CableLabs Client Configuration

At 01:51 AM 8/3/2002 +0200, Erik Nordmark wrote:
> > Couldn't this also be a reasonable operational feature?  The use of DNS in
> > PacketCable (as specified by these sub-options) is quite 
> restricted.  Using
> > non-standard ports may, for example, allow deployment of a specific DNS
> > server for PacketCable on the same device as a general nameserver.  Or it
> > might just allow extra confidence that the queried server is, in fact, 
> not a
> > general purpose Internet DNS server, but a PacketCable specific one.
>
>How does this relate to
>         RFC 2826 IAB Technical Comment on the Unique DNS Root.

Erik, how exactly does a non standard DNS port violate the unique root ?

>I could be wrong bit it seems like folks might be trying to build w
>alled gardens using this "dns on a different port number" as a tool.
>I think we in the IETF should focus on designing the right protocols
>for the Internet and not encourage walled gardens. So why should we add
>additional complexity for this DNS port number thing?
>
>I haven't seen an argument that is convincing to me.
>(And FWIW, the "security through obscurity" argument about using non-standard
>port numbers is actually a reason to not allow a mechanism for alternate
>port numbers; we need to get folks to think about real security.

Security is not Cablelab's primary argument here (recall it was #3 in the 
previous email).  The primary argument is to provide flexibility to our 
customers.

> > If CableLabs participants (including operators) have felt the desire to
> > deploy these DNS servers on non-standard ports, why shouldn't they be able
> > to do that?  Why shouldn't the DHCP configuration info which is 
> specific to
> > PakcetCable (or similar CableLabs standards) support that?
>
>I thought we were talking about an Internet standard, and not
>a CableLabs standard.
>
>   Erik
>
>
>
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--

Paul Duffy
Cisco Systems, Inc.
paduffy@cisco.com

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