Hi, I need to gain access to one host. I know that the OS is windows, probbably Windows Server 2003. And the owner of that host definitely uses a remote access program or something to control things in host. My goal is to find out what program does he uses to control the host. I made a port scan, and now I know that only 2 of all ports are opened. One of them is game server, another unknown. That unknown port is 49154. If anyone know what this port can be related with, please tell me

I used google, but found almost nothing that could help me.
Also if u know any other way how to gain access to other pc, just tell me
Please don't spam, any valuable info would be great !

Thanks.