On 06 Sep 2011, at 13:24, Alexander Klenin wrote:
Hm. This may be an issue with my provider then.
However, the only site affected is freepascal.org, which is very
strange.
Will try to call the provider to investigate.
There is one known problem: the server is behind a brain dead
firewall, which drops most icmp packets (except for ping). This
includes the "fragmentation needed" packets used for path mtu
discovery (http://www.networksorcery.com/enp/rfc/rfc1191.txt).
We have enabled TCP-based mtu discovery (http://tools.ietf.org/html/rfc4821
), but it appears to be slower. Alternatively, you can try to clamp
the maximum segment size of all tcp connections manually: http://lartc.org/howto/lartc.cookbook.mtu-mss.html
(try 1400 or so, and work up from there). It will slightly reduce
the efficiency of your connection though (for all tcp connections,
also to other servers).
Jonas
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