On Sat, 7 Aug 2004 18:56:08 +0000 (UTC), "Andreas M. Kirchwitz" <fedora-list@xxxxxxxxxxxxxx> wrote: >Emil Valsson <emil@xxxxxxxxxxxxxxx> wrote: >Kernel 2.6.7 uses different network parameters than kernel 2.6.6. >For example, window scaling is turned on in 2.6.7 (but it was off >on 2.6.6). This causes problems with most firewalls. Execute the >following command with root privileges, that should "fix" the >networking problem for all new connections: > > sysctl -w net.ipv4.tcp_default_win_scale=0 > >Put this in your /etc/rc.d/rc.local file or put >"net.ipv4.tcp_default_win_scale = 0" directly into >/etc/sysctl.conf (which is the better way, but be careful >that it doesn't get overwritten by package updates). > >Actually the Linux kernel is fine, the problem is in the firewalls >and/or their configuration. If anybody knows how to configure a >Cisco (with and without inspection) to work with window scaling, >I'd be happy about some hints. Does this apply to relatively dumb switches, too? I'm seeing tremendous slowdowns with 2.6.7. -- Steve
