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    SubjectRe: [PATCH] fix tcp_default_win_scale.
    On Tue, 6 Jul 2004 20:40:34 +0100
    Jamie Lokier <jamie@shareable.org> wrote:

    > Stephen Hemminger wrote:
    > > Recent TCP changes exposed the problem that there ar lots of really
    > > broken firewalls that strip or alter TCP options. When the options
    > > are modified TCP gets busted now. The problem is that when we
    > > propose window scaling, we expect that the other side receives the
    > > same initial SYN request that we sent. If there is corrupting
    > > firewalls that strip it then the window we send is not correctly
    > > scaled; so the other side thinks there is not enough space to send.
    >
    > If a firewall strips the window scaling option in both directions,
    > then window scaling is disabled (RFC 1323 section 2.2).
    >
    > Are you saying there are broken firewalls which strip TCP options in
    > one direction only?

    It appears so.
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