Maybe this can help: https://www.infratech.es/avast/eas-acceso-remoto.html (see images)

Google translate:

Get the EAS from the agents / remote client

For individual equipment we have outside our LAN receive security policies, configurations … and send their status and information from possible infection, we must:

  • Create a group within the “Computer Catalog” in which all machines are entering the AES from the outside. Within the properties of this group, in the section “Communication” indicate Public IP address of your router / gateway in the “EAS Address” field.
  • Open the TCP / 16136 and TCP / 16139 ports on the firewall / router (gateway), and redirect them to the local IP of the EAS.
  • Create a specific installation package for these machines indicate the Public IP address (WAN) that agents / remote clients should send their information. To do this, go to “Install Packages” in the Administration Console and create a new package that, in addition to defining the shields and functionality we want for our remote computers, define the public (WAN) IP address in the field “Server EAS”.