Re: [dhcwg] WG last call on draft-ietf-dhc-suboptions-kdc-serveraddress-03.txt

Ralph Droms <rdroms@cisco.com> Thu, 13 March 2003 14:15 UTC

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Date: Thu, 13 Mar 2003 09:13:58 -0500
To: dhcwg@ietf.org
From: Ralph Droms <rdroms@cisco.com>
Subject: Re: [dhcwg] WG last call on draft-ietf-dhc-suboptions-kdc-serveraddress-03.txt
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In the second paragraph of the introduction, at the top of page 2, there is 
an explanation of the motivation for this sub-option:

    The class of devices assumed in [2] is unlike the class
    of devices considered in [1], which perform a DNS lookup of the
    Kerberos Realm name to find the KDC server network address.

    [1] "DHCP Option for CableLabs Client Configuration  draft-ietf-dhc-
         packetcable-06", IETF, February 2003.

    [2] "CableHome 1.0 Specification SP-CH1.0-I03-030124", CableLabs,
       	January 2003, http://www.cablelabs.com/projects/cablehome/
	specifications/.

I looked in the CableHome specification [2], but couldn't find any
text giving a more detailed explanation of the difference between
the two kinds of clients.  The KDC server address specification
could use more detail, either by reference to the CableHome
specification or in the KDC server address specification itself.

Also, the "Security Considerations" section needs to either require
the use of authenticated DHCP or explain why a rogue DHCP server
can't compromise a CableHome client by sending the addresses of
rogue KDC servers.

- Ralph


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