Re: ECN for servers ?

From: H. Peter Anvin (hpa@transmeta.com)
Date: Wed Feb 14 2001 - 16:00:51 EST


Jeff Garzik wrote:
>
> On 14 Feb 2001, H. Peter Anvin wrote:
> > By author: Petru Paler <ppetru@ppetru.net>
> > > What is the impact of enabling ECN on the server side ? I mean, will
> > > any clients (with broken firewalls) be affected if a SMTP/HTTP server
> > > has ECN enabled ?
>
> > Pro: better behaviour in presence of network congestion.
> >
> > Con: people behind broken firewalls can't connect.
>
> Since you can use ICMP to tunnel data, a lot of security ppl are
> reluctant to stop filtering ICMP :/
>

You can use DNS to tunnel data, too. As far as ICMP is concerned,
perhaps they should consider sterilizing approaches instead.

        -hp

-- 
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"Unix gives you enough rope to shoot yourself in the foot."
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