Firewall Requirements

This Article Applies to:

Avast Business On-Premise Console

For overall functionality, and to enable the Antivirus client and/or the management console to authenticate/update, you must allow certain ports and URL addresses through the firewall or proxy server on your endpoints.

Ports

UDP 53 DoH enabled – Secure DNS services (if using Real Site)
TCP 80 – Internet vulnerability checks and feature updates
TCP/UDP 443* – Encrypted communication
TCP 8080*, 8090* – Communication between the On-Premise Console and clients within local network
TCP 4158 – Mirror, for local updates within local network
TCP 7074 – Remote Deployment within local network
TCP 7500 - For push notification services

*These default ports can be modified during or after On-Premise Console setup if needed. Note that any changes should be reflected in the firewall configuration.

URLs

*.avast.com
*.avcdn.net

Geoblocking

Avast web services are hosted in many countries around the world. Therefore, we do not recommend geoblocking in your firewall settings. If geoblocking is necessary, we recommend setting URL Allow rules to supersede geoblocking, so Avast traffic can still be allowed.