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SubjectRe: 2.6.9 NAT problem
Giuliano Pochini wrote:

>I can't make NAT work on 2.6.9. Outgoing packets are translated and sent,
>but incoming packets get rejected. pc4 is the other box (inside the NAT) and
>host164-26... is the dynamic address of my machine:
>
>20:42:20.132876 IP pc4.33115 > nsa.tin.it.domain: 7213+ AAAA? www.drweb32.com. (33)
>20:42:20.132876 PPPoE [ses 0x5198] IP host164-26.pool21345.interbusiness.it.33115 > nsa.tin.it.domain: 7213+ AAAA? www.drweb32.com. (33)
>20:42:20.446829 PPPoE [ses 0x5198] [length 124 (4 extra bytes)] IP nsa.tin.it.domain > host164-26.pool21345.interbusiness.it.33115: 7213 0/1/0 (94)
>20:42:20.446829 PPPoE [ses 0x5198] IP host164-26.pool21345.interbusiness.it > nsa.tin.it: icmp 130: host164-26.pool21345.interbusiness.it udp port 33115 unreachable
>
>I enable NAT with this commands:
>
>echo "1" >/proc/sys/net/ipv4/ip_dynaddr
>echo "1" >/proc/sys/net/ipv4/ip_forward
>iptables -t nat -A POSTROUTING -s pc4 -d ! 192.168.1.0/24 -j MASQUERADE
>
>I also tried SNAT with same results. I don't know if this info is useful:
>all the connection couples shown by /proc/net/ip_conntrack are in
>[UNREPLIED] state. I'm using iptables 1.2.11 and linux 2.6.9. All the above
>works just fine with 2.6.8.1 and previous versions.
>
>Linux Jay 2.6.9 #3 SMP Mon Dec 13 19:58:08 CET 2004 ppc unknown
>
>
>--
>Giuliano.
>-
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>
>
>
add this:
echo 0 > /proc/sys/net/ipv4/tcp_bic
echo 0 > /proc/sys/net/ipv4/tcp_ecn
echo 0 > /proc/sys/net/ipv4/tcp_vegas_conf_avoid

please , tell me if this work.
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