Did my computer get compromise?

For the past 2 days NAV has blocked serveral of thses:

 

Risk name: MSRPC server service BO

 

Severity: High

 

Attacking computer: 115.163.188.181,3837

 

Source address: 115.163.188.181

 

Traffic description:  TCP, Port 3837

 

Recommended action: No action required

 

Is my computer being compromise? Any way to prevent this?