Hello list, My subnet at Ohio State is running a BSD firewall with packet 
filter. It works great, but I just encountered a weird problem with the linux 
2.16.18.2 kernel and packet filter. When the firewall was on I could do 
absolutely nothing via the web; every page would hang. As soon as I turned the 
firewall off, all connections worked fine. Apparently this is a known bug? and 
changing the tcp_window_scaling setting in the kernel to 0 fixes it. Anyway I 
was hoping that someone could explain to me why that setting might cause a 
problem with packet filter. It irritated me for weeks. By the way I'm using 
OpenSuse 10.2 --never had it up to and including Suse 10.1. I'm not sure if 
this is a problem in general with that kernel or with some distro particular. 
I'm running fedora core 6 on another computer and that works fine. I just 
discovered this fix so I haven't checked what kernel that has installed (fedora 
core 6) or what the tcp_window_scaling is by default. The following com
mand fixed it on my computer (openSuse 10.2)

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

Any quick insights just for my own education?

Thanks so much,


Wayne King

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