How can I play CoD 4 Modern Warfare Remastered with friends?

I want to know how I can play CoD 4 MWR on LAN or WiFi/Internet. I have played the non-remastered version by making a LAN on cmd but it always ended up lagging with server connections. I looked up Tunngle, but they don't have a server yet. Whenever I make a game on my Internet, no one can find it.

Is there any way of playing on LAN or Internet/WiFi without lag or server connections? If there is, how do I do it?

Note: This is on PC.

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