Help here! After a firewall change here in my company, one of our TCP servers stopped binding the connections. I tried to hard force it to make a test but the incommig connections only works for the internal network.

Help here! After a firewall change here in my company, one of our TCP servers stopped binding the connections. I tried to hard force it to make a test but the incommig connections only works for the internal network.

    IdTCPServer1.Bindings.Clear; 
    SHandle := IdTCPServer1.Bindings.Add;
    SHandle.ip := '10.0.0.1'; // previous was 0.0.0.0
    SHandle.Port := 10001; 

Default was using bindings: 0.0.0.0:0

I need an advice here how can this happen? An old application using WinSocks works fine, this new on XE7 is no more woking.