In the application settings window, select General settings → Network settings.
In the Monitored ports block, select Monitor selected network ports only.
Click Select.
This opens a list of network ports that are normally used for transmission of email and network traffic. This list of network ports is included in the Kaspersky Endpoint Security package.
Use the toggle in the Status column to enable or disable network port monitoring.
If a network port is not shown in the list of network ports, add it by doing the following:
Click Add.
In the window that opens, enter the network port number and brief description.
Set the Active or Inactive status for the network port monitoring.