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linuxsocketstransparentproxy

TPROXY - Get the accurate destination/remote IP address

Using the latest TPROXY with the Linux Kernel, how would I get the IP address of the remote/destination machine? I am assuming that the local/source endpoint is returned from accept().

Solution

  • The original (before rerouting) remote destination will be in getsockname(). accept() will return the local (local enough BUT NOT an interface on the computer) source address.