Can't load one specific web site
OS: Debian Etch 4.0r1
Problem: From this machine, cannot load sfa.osu.edu. Additional information: Site is up and can be accessed from a Ubuntu machine on my network. A tcpdump shows that the domain name is resolved, the connection is made, and a few packets are transferred back and forth, but then it just idles until browser timeout. I have tried faking my useragent as IE, thinking the site may have some silly restriction, but it did not help. Browsers tried are Firefox 2.0.0.6 and elinks 0.11.1-1.2. Code:
20:59:51.435520 IP (tos 0x0, ttl 64, id 41781, offset 0, flags [DF], proto: TCP (6), length: 52) myhostname.local.53273 > sfa-web.adm.ohio-state.edu.www: F, cksum 0x7510 (correct), 1589676898:1589676898(0) ack 1112734155 win 46 <nop,nop,timestamp 68900630 0> |
Have you tried through a free proxy server?
Just Google 'Free proxy server' and pick from the list. I like 'freetoview.net' for its simplicity. If it works, I'm not really sure what it proves or disproves, except *maybe* your IP might be blacklisted for some unknown and possibly erronious reason.. It's been known to happen. Keep us posted :) |
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Hmm.. Well, I've never heard of a blacklisted MAC address.. But did you try a proxy anyway? Who knows..
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This will get you going...
Code:
$ su -c 'echo 0 > /proc/sys/net/ipv4/tcp_window_scaling' Code:
$ su -c 'sysctl -w net.ipv4.tcp_window_scaling = 0' |
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Can you please elaborate on the technical details as to why this worked and how you knew it was the solution? |
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This was before the solution above was used to fix it. |
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Bottom line is that Ohio State apparently uses an aging router that doesn't follow RFC 1323. I recognized your symptoms from previous experience. |
Thank you.
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You're quite welcome. Best of luck in school.
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Very interesting tidbit re: the old router. Glad I followed up on this! Always something new...
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Wow!
I'd just like to say that this just helped me out a lot. I had the very same problem while staying at a hotel this week (Hotel Avante in Mountain View, for anyone else googling the same problem :) ) and it virtually prevented me from doing anything useful on the Internet. I couldn't even SSH or VNC into the computer that I left at home to deal with this very sort of crisis! But this fix works perfectly, as mentioned. :)
I should note though that I tried a Windows laptop and it didn't need any special configuration to work. Shouldn't we find that embarrassing? |
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