Re. Open a port 8080
How to check port is open or not for SAP B1 Integration solution?
and how to open port if it is not open?
Use this command:
netstat -ano -p tcp | findstr "8080"
If result is nothing you just need to start a service "SAP Business One Integration Service" from services.msc (tip: in 'Run' field of start menu type 'services' to quickly find services console).