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Wtf? Using echo 0 >/proc/sys/net/ipv4/tcp_window_scaling and I can connect to the site.
With it on I can't even with firewall off and a direct connection to my cable modem. Weird.
Is that something that is in the kernel?
If it is , it might explain why I couldn't connect and others using "pure" Debian Sid could; since I am using a Sidux kernel 220.127.116.11-slh-up-1 and not a "vanilla" Debian kernel.
It appears to be an issue with TCP window scaling and broken routers. The scaling options have changed as of kernel 2.6.17 and the problem seems to occur if you have a lot of RAM and of course a broken network equipment between you and the server.
Setting back the values to those of an earlier kernel does the trick:
might have missed something but... connecting to Debian.org problems
Iceweasel will not connect with 'www.debian.org', previous posts suggested my set up was wrong but this seems odd, have debian servers got extra security I do not know about or is my router an issue, this has no security on it as I was hoping to use it as a switch; any thoughts?
Distribution: Debian Wheezy, Jessie, Sid/Experimental, playing with LFS.
Fred this thread is about 5 weeks off being 6 years old. May I recommend you start a new thread because 99.9999999% chance your issue is different to the OPs issue. You really must have searched through the dungeons to rake this old beasty up.