nanog mailing list archives

Re: syn attack and source routing


From: Curtis Villamizar <curtis () ans net>
Date: Wed, 18 Sep 1996 21:09:09 -0400


In message <199609182107.OAA00889 () quest quake net>, Vadim Antonov writes:
John Hawkinson <jhawk () bbnplanet com> wrote:

  i should have been more specific.  i don't like the idea (at all) of
breaking traceroute -g either.  i guess in a more general sense i
should ask "just how dangerous *is* having backbone-wide/internet-wide
loose source routing enabled?".

As Curtis explained, "not very".

Want to wait until SYN attacks are augmented with LSRR-enabled
traffic randomization to the point of making it nearly impossible
to trace?

At the borders hosts that don't want to be attacked just shut off LSRR
at the border router or at the host itself.

Problem solved.  And we still have traceroute "as is".

Curtis
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