Cannot Connect to SQL Database (SQL Server 2008 R2)

Hello! I am having trouble connecting to my server. I don't know if I have the right Server IP which is "192.168.2.2" according to IPConfig Description. Is connecting to the server using the GM Tool needs the presence of CentOS working? I'm confused about my server's IP address, I tried many, but then, I failed. Well, I am using Wireless Network which I assigned 192.168.2.2 as my computers IP address.

or SQL database Connection you use LAN IP instead of CentOS IP to connect on SQL Database and you must always turn it off firewall on windows and centos ;)