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I've got a problem with NAT connections on
PPPOE.
My box is connected to internet via DSL, and I have
some computers behind NAT.
I changed MTU on internal interfaces to 1492 and
configured iptables with:
iptables -A FORWARD -p tcp -m tcp --tcp-flags
SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
also I have squid cache installed for local
workstations.
When I surfing net without squid everything works
fine, no timeouts or something. Is good.
But when I use squid as a cache sometimes
when squid uses POST method with huge amount of parameters, connection hangs. On
tcpdump I see that one packet is repeated few times (5) and I got timeout
message.
What's wrong ? Repeated packet has 1492 bytes
lenght. But there's no answer from www server.
Pozdraviam
Przemyslaw
Borkowski
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