Firewall Requirements (AVG Business Antivirus)
For overall functionality, and to enable the AVG Business Antivirus clients to authenticate/update, you must allow certain ports and URL addresses through your Firewall or Proxy Server.
Ports
TCP & UDP:
- 80 – Internet Vulnerability Checks and Feature Updates
URLs
- *.avast.com
- *.avg.com
- *.avcdn.net
- *.mailshell.net (only if using Anti-Spam)