monkeydom/TCMPortMapper (carthage): "TCMPortMapper.framework" is a clean and nice Objective-C API to provide knowledge about and improve the reachability of your machine from the big bad internet. "Port Map.app" is a nice standalone sample app using the framework to display reachability and enable setup of Port Mappings if your router allows for it.
Keywords: dyndns|firewall|ipv4|ipv6|macos|nat-pmp|networking|objective-c|osx|reachability|upnp|upnp-portmapper