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PPPoE problems

I am PPPoE newbie and have some problem.
Some websites don't come up on browser.

www.yahoo.co.jp, or www.infoseek.co.jp.
ping www.yahoo.co.jp /f /l 1426 ... well,
ping www.yahoo.co.jp /f /l 1427 ... fail.

Probably, cause is these webserver's filtered ICMP. and PPPoE MTU problem.

so, I searched and found write below is well,
Code:

 
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

whare can I write these codes?

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0 William Warren over 21 years ago

in network-interfaces find your WAN interface and set your PPPOE MTU for what your DSL provider says it should be..this is typically 1492 but may be different for your provider. Try that and see if it helps...
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0 William Warren over 21 years ago

in network-interfaces find your WAN interface and set your PPPOE MTU for what your DSL provider says it should be..this is typically 1492 but may be different for your provider. Try that and see if it helps...
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0 SecApp over 21 years ago in reply to William Warren

And if that doesn't work, you can simply try the command interactively first at the console (though I am not sure what the security ramifications of such an iptables command would be). Let us know how it goes...
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