Mailinglist Archive: opensuse-security (757 mails)

< Previous Next >
Re: [suse-security] remote admin: su vs login as root
  • From: Robert Casties <robert.casties@xxxxxxxxxxxxxx>
  • Date: Fri, 11 Jan 2002 11:12:22 +0100 (CET)
  • Message-id: <Pine.LNX.4.33.0201111103080.3237-100000@xxxxxxxxxxxxx>
On Fri, 11 Jan 2002, Kurt Seifried wrote:

> Basically it's a lesson that yes traffic analysis works, and it can be
> combatted intelligently. Things like putting in a timing loop to openssh and
> delaying packets till the next 10 or 50 ms interval for example so packet
> timing gets delayed a bit and isn't as informative. As for guessing

That question (as most in software design) is full of tradeoffs. People
using ssh interactively want uniform short delays. That behaviour enables
timing attacks. A steady flow of encrypted traffic regardless of
interactive use would be optimal from a security standpoint but a waste
of bandwidth.

Robert

--
Robert Casties --------------------- http://philoscience.unibe.ch/~casties
History & Philosophy of Science Tel: +41/31/631-8505 Room: 216
Institute for Exact Sciences Sidlerstrasse 5, CH-3012 Bern
Uni Bern (PGP key on homepage: 3C7E CAA6 0A2A 6955 AA25)


< Previous Next >
Follow Ups
References