Avast gives the required computer protection from the harms like viruses, online threats, and spam. It has the correct features which are required to protect the system; its firewall issue makes the users problematic in its use. It happens due to incorrect set up of this and to set up this in a correct way, you have to talk to the technical experts of Avast Help Number. They are very knowledgeable in this arena and can easily fix the issue. They will give you proper assistance in a correct set up of the firewall so that other issues will not occur.