nanog mailing list archives

Re: rfc 1918?


From: SMcGrath () dhhs state nh us
Date: Fri, 23 Feb 2001 15:25:50 -0500



Bill, You get the 10 point bonus.

Are we leaking RFC1918 SMTP headers ?

Scott




bill manning <bmanning@localhost.localdomain>@merit.edu on 02/23/2001
02:49:32 PM

Please respond to bmanning () karoshi com

Sent by:  owner-nanog () merit edu


To:   nanog () merit edu
cc:   Valdis.Kletnieks () vt edu

Subject:  Re: rfc 1918?



SMcGrath () dhhs state nh us wrote:

Agreed Valdis,

Our upstream's use 1918 addresses internally  so that 1918 addresses are
constantly bouncing off our filters
we have an aggressive egress filter which makes sure no 1918's leak and
pollute the internet ;-} and filtering on core routers is a suboptimal
solution RFC 1819 addresses (10 points to the person who knows the
predecessor)  NEED to be filtered at the border IMHO.

Scott


AS long as you are filtering, could you -PLEASE- add the SMTP filter to
prevent email w/ RFC 1918 addresses in the headers from leaking out of
your networks?

RFC 1597.

--bill







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