hello! i'm about to set up port forwarding on a firewall to be able to reach some hosts on the lan from the outside. i wish to use iptables prerouting rules. my question is, is there a way to detect the port forwarding, and/or get info about the host i forward to (ip address mainly) ? i mean: is an outsider able to do this? supposing that the service i reach is free of bugs. as of my understanding of prerouting, this is not likely. thanks, p