how to connect?

actually I can play the game with the CentOS IP.
but can't connect when I'm using the Global IP(WAN IP).

I change WorldSvr_01_01 IP's to WAN IP
and my LoginSvr_01 is set to CentOS IP

puTTy > service cabal config :

Enter MSSQL server IP: here is my PC LAN IP
Enter MSSQL server User: here is my SQL user
Enter MSSQL server password: my sql password
Enter IP for players to connect: I put here the CentOS IP

Client Internal is CentOS IP.
The game works.
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But when I'm changing Enter IP for players to connect: to WAN IP and Client Internal.txt to WAN IP.
I can't connect. this is what I followed on the guides , tips and hints. I saw.

btw. I want to test the server in public so I'm asking a help to connect.
anyone knows what could be the problem ?