search for: iptablesrul

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Did you mean: iptablesbug
2007 Mar 14
0
[Bug 554] New: Packet illegaly bypassing SNAT
...my router I had the command: tcpdump -v -i ${EXTERNAL_INTERFACE} src net ${SOURCENET} Rules in use: iptables -t nat -F iptables -t forward -F iptables -t nat -A POSTROUTING -o ${EXTERNAL_INTERFACE} -j SNAT --to-source ${EXTERNAL_IP} Forwarding was enabled _after_ installing the iptablesrules. I think that an unusal combination of flags causes that problem and since "nmap -sX" is all flags on, it is unusual enough to trigger the problem. But as said above, it also happens during normal usage. Instead of the SNAT-rule I also tried: iptables -t nat -A POSTROUTING -...