Connection failed for my friend

I was trying to start at server for me and my friend. I think I have done all the things needed but im not really sure on the port forwarding. I can get into the server with all the mods and things. But when my friend trying to join it in the server list it says “Connection failed.”
I have done the “rules for income trafic” and the “rules for outcome trafic” and then I did UDP and TCP on both of them. But my friend cant join and I dont know why?

Thanks in advance!