Antivirus engine is complemented by anti-spyware, firewall and antispam modules. VPN connections (via PPTP): authorizes connections to Virtual Private Networks based on the Point-To-Point Tunneling Protocol.Avast Free Antivirus software provides complete virus protection for your computer.DHCP: authorizes communication using the Dynamic Host Configuration Protocol to automatically provide devices with IP addresses and other related configuration information such as the subnet mask and default gateway.DNS: authorizes communication with Domain Name Servers which enables devices to recognize the IP addresses of the websites you visit.Multicast traffic: authorizes applications and services for media streaming when distributing content to groups of multiple recipients in a single transmission, which is necessary for activities such as video-conferencing.

IGMP traffic: authorizes multicast communication using the Internet Group Management Protocol, which is required by some media streaming services for more efficient use of resources during activities such as video streaming and gaming.

Outgoing ping and trace requests (ICMP): authorizes outgoing Internet Control Message Protocol messages.

ICMP is typically used by system tools, such as ping or tracert commands, for diagnostic or control purposes when troubleshooting connectivity issues

Incoming ping and trace requests (ICMP): authorizes incoming Internet Control Message Protocol messages.

Remote desktop connections: authorizes other devices in the network to remotely access and control devices when the Remote Desktop service is enabled.

Printer & File Sharing: authorizes other devices in the network to access shared folders and printers on devices.Your network may require slightly different configuration. Most network environments enable Allow Windows File and Printer Sharing and/or Allow remote desktop connections to this computer. If you select the last option, be sure there are application or packet rules configured for the type of traffic you can expect in Firewall: Application rules and Firewall: Advanced packet rules. For most of these rules, you can choose if they are Allowed, Blocked, or Not configured.

Avast firewall settings for gaming