a friend and I wanted to play CS: Source together over LAN. We actually thought it would be quite simple and it would be enough to turn on Radmin and then, after one of us has created a server, just join it. But we had the problem that the cre ate d server was not displayed. We also tried "connect" + IP address, whereupon "LAN Games Restricted to Class C Clients" appears. Setting "sv_lan" to "0" didn't work so far either (do you have to do that before creating the server?). We both own the game via Steam and use Windows 10. We also checked the firewall, which should not be a problem.
Maybe someone here on the forum has experience with Source. I would be very grateful for any tips!
1. Turn off firewall (local and remote) or open ports that the game you`re playing in is using on your local PC to establish connection.
2. Try to change metric of Radmin VPN adapter. Firstly, set it to 1. If it didn`t help, set it to 1500 or to the max value (you can read more here https://www.raymond.cc/blog/choosing-which-connection-to-use-with-windows-routing-table-editor-gui/).
first you DON'T wanna create the server like normal, but instead you're gonna want to create it via the console, by typing in the command: "map (what map you want to play)" and then follow as you did, typing the command sv_lan 0, and then type status and copy that IP and port as they go in the status message (eg:26.17,85,154:27028) and then have you're friend try and connect using that as the ip, for me it worked, good luck.
sorry im a bit too late.