redirect subdomain to local ip server

[geri1590]

Ey!! Sry for delay!
It isn't working form outside because probably, if you have a router, it have to be open, 2 ports (80: 192.168.1.50, and 80: 192.168.1.5) And in the same network, that I know, it not be possible.
Or probably this is problem of Apache (Vhosts) I think about that, and if anyone knows solution, please write it.
I'm shure that everything that I explain it's wrong. In this case correct me,

Greets!