[Dshield] Re: Verisign abusing .COM/.NET monopoly, BIND releases new

Jose Nazario jose at monkey.org
Wed Sep 17 21:19:20 GMT 2003


a number of options exist to help you remedy this issue:

	- bind 9.2.3rc2 supports "delegation-only", stopping some
	  wildcard implementations from making any difference

if you simply want to stop traffic getting there (they are running a
website and a partially functional MTA on that IP):

	- you can BGP null route this
	  http://www.merit.edu/mail.archives/nanog/msg13715.html

	- cisco's NBAR functionality may be used to detect and block those
	  reply packets from coming in by looking for the response from
	  the nameservers.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121e2/nbar2e.htm

note that this wont stop the query from reaching verisign, it will just
stop you from going to that IP. however, for some enforcing network
privacy concerns, that may be worthwhile.

hope this helps,

___________________________
jose nazario, ph.d.			jose at monkey.org
					http://monkey.org/~jose/




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