Re: lug-bg: File Upload

[peyo <peyo@xxxxxxxxx>]

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On Tuesday 23 September 2003 11:15, Iassen Anadoliev wrote:
> Problemite wsushnost sa dwa, za koito spored men prichinata e edna i
> sushta ta...
>
> 1vo Otwarqm si ftp sesiq nawunka (nqma znachenie s real ili s private IP).
> I probwam da kacha primerno exe file. Kachwa dokym 40KB i spira. Sluchwa
> se i s nqkoi drugi files, no primerno s arhiwi ne se.
> 2riq problem e podoben, samo che e s public mail. Abv, Mail.bg etc. Nqkoi
> files se attachwat, drugi ne. Men neshto ne mi se wruzwa, sled kato nqmam
> nikakuw filter na application level...
>
Мда. Мисля, че имам решвние за твоя проблем.

[кръц от iptables man page]
TCPMSS
       This target allows to alter the MSS value of TCP SYN packets,  to  con-
       trol  the maximum size for that connection (usually limiting it to your
       outgoing interface's MTU minus 40).  Of course, it can only be used  in
       conjunction with -p tcp.
       This  target  is  used to overcome criminally braindead ISPs or servers
       which block ICMP Fragmentation Needed packets.  The  symptoms  of  this
       problem are that everything works fine from your Linux firewall/router,
       but machines behind it can never exchange large packets:
        1) Web browsers connect, then hang with no data received.
        2) Small mail works fine, but large emails hang.
        3) ssh works fine, but scp hangs after initial handshaking.
       Workaround: activate this option and add a rule to your  firewall  con-
       figuration like:
        iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
                    -j TCPMSS --clamp-mss-to-pmtu

[/кръц]

Мисля, че това е точно каквото ти трябва.
Поздрави:
Пейо

>
>
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