-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Scott Zuk wrote: > Yup, I had this problem. Try this as root: > > echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
You could also use sysctl or /etc/sysctl.conf As root (or with sudo) do "sysctl -w net.ipv4.tcp_window_scaling=0" or in /etc/sysctl.conf put the following: net.ipv4.tcp_window_scaling=0 > > Do a search on google for "pcfinancial tcp_window_scaling" and you will find > lots of hits, something is wrong on their network. The co-lo where I house my servers had the same problem about a year and half ago (openBSD router using the pf scrub function, which breaks TCP features such as window scaling). Fortunately they were receptive to making changes to their network. The short answer for you is that they have deployed broken gear to route traffic. There are some heated discussions on this topic (the BSD people call it a feature, the Linux kernel people call it a bug... hilarity and flame wars ensue). For now it should be easy to implement a work around. The problem is not limited to BSD, there are genuinely broken routers out there that window scaling exposes. Vista supposedly supports window scaling so things should get interesting, if you follow this sort of thing... and if this sort of thing interests you... As for the why, window scaling was enabled by default on recent kernels after having been disabled by default back in the 2.6.16 era because it broke too much for the average user. If you really care or are interested, the Linux Kernel Mailing List (LKML) has a few threads on this very topic. Cheers, > Regards, > Scott > > On December 30, 2008 11:34:23 am RS wrote: >> Hi! >> >> Happy New Year! >> >> Wondering if anyone else is having this issue. >> >> Recently I upgraded to Ubuntu 8.10. A very strange thing happened I was >> unable to access President's Choice Banking. After putting in my card >> number and PW Firefox 3.04 would just sit there and time out. I installed >> the latest Java plug-in and the browser plug-in but still could not log in. >> I find this odd since Ubuntu 8.04 with Firefox 3.0b5 worked fine. I have >> tried Fedora 10 with Firefox 3.03 and Open SUSE 11.1 with Firefox 3.04. >> These do not work either. >> >> >> >> Can someone tell me if something has changed recently at President's Choice >> to breaks my on-line banking access? Do you know what the problem is with >> Linux, Firefox and banking access? I did a search on the Web and found no >> pertinent information. Firefox 3.05 under Windows works no problem. >> >> >> >> Please let me know if anyone has a fix, >> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAklbX6wACgkQwRXgH3rKGfPwGwCeKRAdoT2J7OXoZlRGKzzNagI6 T9AAnie+RY5uYfwbBFVOP4TxNtrtE5BE =0Kau -----END PGP SIGNATURE----- _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
