Re: can't go to certain web sites?
Andy Wettstein <awettstein@cait.org> writes:
> Here's a weird one. I've got a friend using Debian on ultra 5, but
> he can't access certain web sites. Notably www.sun.com, but he can
> access several other sites sites. He has tried mozilla, opera,
> konqueror, and lynx and all of them have the same problems. They
> just sit there and time out after a while. The only thing I see
> that is odd is that on a dmesg there are lines and lines of this:
>
> hw tcp v4 csum failed
>
> Has anyone else had a problem like this? This doesn't seem normal.
Disable ECN: echo 0 > /proc/sys/net/ipv4/tcp_ecn
,----[ linux/Documentation/Configure.help ]
| [...]
| CONFIG_INET_ECN
| Explicit Congestion Notification (ECN) allows routers to notify
| clients about network congestion, resulting in fewer dropped packets
| and increased network performance. This option adds ECN support to the
| Linux kernel, as well as a sysctl (/proc/sys/net/ipv4/tcp_ecn) which
| allows ECN support to be disabled at runtime.
|
| Note that, on the Internet, there are many broken firewalls which
| refuse connections from ECN-enabled machines, and it may be a while
| before these firewalls are fixed. Until then, to access a site behind
| such a firewall (some of which are major sites, at the time of this
| writing) you will have to disable this option, either by saying N now
| or by using the sysctl.
|
| If in doubt, say N.
| [...]
`----
Juergen
--
Juergen Kreileder, Blackdown Java-Linux Team
http://www.blackdown.org/java-linux.html
Run Java 2 SE v1.3.1 on your iPAQ:
http://www.handhelds.org/pipermail/ipaq/2001-June/007221.html
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