On Thu, 2007-02-01 at 17:48 -0500, Jacques B. wrote: > > Hi, Jacques and others, > > I am having a similar problem, but the window scaling didn't fix the > > issue. As I read the information in the link, I saw that they had ECN > > disabled. However, I didn't see how or where to do that. Can someone > > please tell me where that control exists? > > > > Regards, > > Les H > > > > -- > > fedora-list mailing list > > fedora-list@xxxxxxxxxx > > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > > > The best I can offer is this that I found online @ http://www.tux.org/lkml/ > > # Why does the 2.4 kernel report Connection refused when connecting to > sites which work fine with earlier kernels? > > * (DW) The 2.4 kernel is designed to make your Internet Experience > more pleasurable. One of the ways in which it does so is by > implementing Explicit Congestion Notification - a new method defined > in RFC 3168 for improving TCP performance in the presence of > congestion by allowing routers to provide an early warning of traffic > flow problems. > Unfortunately, there are bugs in some firewall products which > cause them to reject incoming packets with ECN enabled. If your own > firewall is broken in this respect, you should check with your vendor > for a fix. > If the site to which you cannot connect is not under your > control, then after you have contacted the administrator of the > offending site to let them know about their problem, you can disable > ECN in the 2.4 kernel either by disabling the CONFIG_INET_ECN option > and recompiling the kernel, or by executing the following command as > root: > # echo 0 > /proc/sys/net/ipv4/tcp_ecn > > Looks like they are creating a file with a 0 value. But strange that > it would be a /proc file seeing that is gone on shutdown. The file is created on boot by the kernel (ever hear of "procfs"?) and by default contains a "1". Doing the echo replaces the "1" with a "0" and turns off ECN. If you want to make it permanent, then put an entry in /etc/sysctl.conf: net.ipv4.tcp_ecn = 0 and it'll get set to 0 when sysctl is run via the /etc/rc.d/rc.sysinit script during startup. ---------------------------------------------------------------------- - Rick Stevens, Senior Systems Engineer rstevens@xxxxxxxxxxxxxxx - - VitalStream, Inc. http://www.vitalstream.com - - - - Never test for an error condition you don't know how to handle. - ----------------------------------------------------------------------
