Every of These three methods have downsides, so you must cautiously consider, if you really want To accomplish this specific forwarding.
One example is if port numbers are modified by NAT on both host, there is not any approach to reconstruct All those. 슬롯 It is also not a presented, that relationship tracking will perform effectively, if the first packet it sees can be a SYN-ACK in lieu of an ACK.
I have developed a Docker graphic that employs this method to routinely manage the iptables to suit your needs, using both environment variables or dynamically with etcd (or equally)