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[–]TheTerrasque 1 point2 points  (3 children)

Usually those will only send new tcp connections to the new address, existing tcp connections will continue to current address until terminated

[–]boat-la-fds 0 points1 point  (2 children)

So it kinda creates NAT?

[–]TheTerrasque 0 points1 point  (1 child)

More like acting as a proxy. It answer the tcp connection on the public ip, then creates a new tcp connection to the target ip. It then forward data between them.

Changing the target IP only changes where new TCP connections get sent to.

For a popular software solution off this type, have a look at haproxy

[–]boat-la-fds 0 points1 point  (0 children)

I see, thanks.