Here's something interesting. Looks like they've got their filtering set to catch your outgoing packet, see if it's valid, allow a small amount through, then completely kill the connection. Here's an example with attached screenshot. Need help from the rest of you handy with networks to pin it down.
Opera 9.64 Header (No problems - loads well):
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GET /demetori/ HTTP/1.1
User-Agent: Opera/9.64 (Windows NT 5.1; U; en) Presto/2.1.1
Host: www.kawachi.zaq.ne.jp
Accept: application/xhtml+voice+xml;version=1.2, application/x-xhtml+voice+xml;version=1.2, text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
Accept-Language: en,ja-JP;q=0.9,ja;q=0.8
Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1
Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0
Connection: Keep-Alive
Firefox 1.5.0.12 Header (Fails - only a few bits get through. Notice the odd ICMP):
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GET /demetori/backa.htm HTTP/1.1
Host: www.kawachi.zaq.ne.jp
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.12) Gecko/20070508 Firefox/1.5.0.12
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer:
http://www.kawachi.zaq.ne.jp/demetori/
This post has been edited by capybara: Oct 1 2009, 07:26 PM