SYN proxy issue on centos box

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spd
Posts: 3
Joined: 2018/12/01 18:19:09

SYN proxy issue on centos box

Post by spd » 2018/12/01 18:26:19

Hello Friends ,

We have a centos box between 2 router , for the inbound traffic from the first interface we directly pass the traffic 2 the second interface and the opposite for the outgoing traffic.
Everything seems ok on mrtg and we can dump and analyze the traffic.
But when we want to activate syn proxy with conntrackts , it directly think all the traffic is invallid. so drop all the traffic.
I've seen some companies succeded the usage of synproxy on routed traffic between interfaces. or maybe they use bridge but we could not succeded for both condition.
Any body has any experience like this ?

Thank you

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