From: "Geo" 

I just set a setting in dnews that is to counter a mosaic bug, perhaps that
will make a difference.

Geo.

"Mike N"  wrote in message
news:44c8ce9c$1{at}w3.nls.net...
> Geo wrote:
>
> > I have lots of things set on the news server to prevent nasties, even
some
> > anti MAC spoofing stuff. Any one of those settings could have an effect
if
> > the packets are weird in some way.
>
>     OK, I finally have something that could be explained by a security
> setting in the W2000 news.barkto.com server.    Did any of these
> settings go into
> HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters ?
>   If so, was there a Tcp1323Opts?  and is it set to 0 or 2?
>
>     That would disable Window Scaling.   Linux uses Window scaling > 1,
> whereas Windows uses a scale = 1.   Scaling is used to send packets
> back-to-back.   As soon as the server needs to send back-to-back
> packets, it looks at the Linux Window size, and if has not scaled it,
> the server will think it has filled the Linux RX buffer and may also
> drop the MTU to match.

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