Apps similar to portforwarder-rs include PortMapper, which is free. Other options are MiniUPnP and Port Map. In total there are three apps like portforwarder-rs for Mac, Windows and Linux.
Do you need to map a specific TCP or UDP port on your machine to another port on another machine? Do you want to limit access to a server on your machine based on the IP address of an incoming connection request?
United States
The MiniUPnP project offers software which supports the UPnP Internet Gateway Device (IGD) specifications. NAT-PMP and PCP support was added to MiniUPnPd.
Did you ever feel the urge to map your networking ports using your Airport Basestation or a UPNP router? Did you ever want your application to be reachable from the internet, even in a home networking setup? Don't despair anymore. Port Map and TCMPortMapper are here!
Germany
EU