nanog mailing list archives

RE: IGPs and services?


From: "Roeland Meyer (E-mail)" <rmeyer () mhsc com>
Date: Fri, 19 May 2000 10:36:38 -0700


From: Bryan C. Andregg [mailto:bandregg () redhat com]
Sent: Thursday, May 18, 2000 8:15 AM

On Wed, May 17, 2000 at 10:14:58PM -0400, jlewis () lewis org
mailed:
Running a routing protocol on a unix box doesn't mean
you're using it as a
router.  Perhaps he just wants OSPF on a few servers so
they can send
their packets more efficiently.  Consider a case where you
have a few
access servers and unix servers on the same switch and a
router connecting
that POP to your backbone.  Having a routing protocol on
those unix boxes
means they can send packets directly to the appropriate
access server (or
the router) rather than everything to the router, just to
have it spit the
packets back out headed for an access server on that segment.

Pardon my ignorance here, but wont ICMP redirects take care
of this situation
already?

ICMP redirects create a potential security vulnerability, for
man-in-the-middle attacks. MHSC.NET doesn't allow them. Not host,
at MHSC.NET, will respond to them (in theory <g>).




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