[ale] Problem connecting to ZDNet

Chris Ricker chris.ricker at genetics.utah.edu
Sun Oct 29 20:20:14 EST 2000


On Fri, 27 Oct 2000, Fulton Green wrote:

> In a nutshell, I can't seem to bring up ZDNet's website in my Linux browser,
> but I can do so from Window$ 98. It appears to be a telnet-level problem.
> 
> Here's the scoop AFAIK:
> 
> - I'm DSL-connected through a Telocity gateway box from my box's 3com 10baseT
>   Ethernet PCMCIA card (3c589).
> - I have a dual-boot notebook, with Win98 on one partition and Red Hat 7.0
>   running a locally-compiled 2.4.0-test9 kernel.
> - If you're still reading after that statement, you're obviously the
>   adventurous sort. :)
> - I am able to connect to www.zdnet.com from Win98's IE.
> - I am unable to do a "lynx www.zdnet.com" from Linux, however.
> - Performing a "telnet www.zdnet.com http" under Linux yields
>   "Connection refused", so that rules out browser-specific issues.
> - Performing a "ping www.zdnet.com" from Linux, however, does yield remote
>   responses.
> 
> So with all this in mind, what would be the best way to analyse betweeen the
> two OSes just what kind of TCP/IP packets I'm sending?

The problem is probably that you enabled ECN; for me, running
2.4.0-test10-pre6-reiser, I can reach zdnet if I disable ECN, but not if I
enable it.

ZDNet (and much of the rest of the 'net) is broken and doesn't handle ECN
correctly.  Email them and gripe; the problem is most likely misconfigured /
non-upgraded Cisco routers on their end, though the chances of them doing
anything about it are slim.

later,
chris

-- 
Chris Ricker                                               kaboom at gatech.edu
                                              chris.ricker at genetics.utah.edu

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