The macOS Finder provides a variety of easy server connection options. Here's how to use the Connect to Server window in Finder to easily mount and use remote network volumes as if they were local ...

Once you have those two rules in place, test the connections from both the LAN and WAN, making sure to use port 2222 on the WAN side connection. You should be allowed in without a problem.

You can connect two Windows 10 PCs to play multiplayer LAN games using Wi-Fi by following this tutorial. Create a multiplayer LAN party & play games with friends!

Right click on a folder and choose "Share". Many, many issues. FTP Server and client Skype (If you're on the same LAN it won't use your internet bandwidth!) Web server program on the host PC.