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Hotel access systems

Hotel access systems

Posted Apr 9, 2008 4:27 UTC (Wed) by shemminger (subscriber, #5739)
In reply to: TCP window scaling and broken routers by jsl123
Parent article: TCP window scaling and broken routers

A common vendor of hotel access control systems (ibahn) seems to be particularly problematic.
I have already experienced that in 3 separate cases the wireless or wired access does not work
with window scaling.

Probably doesn't work with Vista either, unless Microsoft has turned off window scaling in
Vista SP1.


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Hotel access systems

Posted Apr 9, 2008 17:02 UTC (Wed) by zlynx (subscriber, #2285) [Link]

Microsoft went to quite a lot of trouble to auto-detect network routes which fail to work with
window scaling, IPv6 and whatever else, and work around the problems.

Linux relies on the user to set things.  I believe there are some iptables rules you can apply
to selectively disable scaling and ECN.  However, I don't know of any distros with scripts
that detect problems and apply those rules automatically.


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