Step 3: Then you just need to follow Step 3 in the previous method.
AVAST FIREWALL SETTINGS. UPDATE
Step 2: Go to the Update option from the drop-down menu and then right-click it to choose Program. For more information see Logging Blocked Packets to Create Exclusions. Step 1: Right-click the Avast icon on your taskbar. You will find the Firewall icon right there. To tweak its settings, just open your Avast and click on ‘Protection’.
Do you have Avast Premier or Avast Internet Security Perfect - your firewall is on by default.