About the risks of open ports on your devices

Open ports on your devices are a potential vulnerability that may let intruders gain remote access to your system and introduce malware that can grant them access to your data. We recommend checking the list of open ports in router settings and closing them unless they have been opened intentionally for specific well-understood purposes. If you are opening a port intentionally, make sure that you are using strong passwords and that software on the device that listens on that port is up to date.

To close a port on a device:

1. Go to the router settings page.
   1. Open the main application window.
   2. Do one of the following:
      • Go to the Smart Home block, and click the View button in the Smart Home Monitor section.
      • In the main application window, click the View button in the Smart Home Monitor section.
      • Click the <network name> link that is displayed in the lower part of the main window.

      The Smart Home Monitor window opens, showing the network to which your computer is connected.

   3. To see the devices connected to the network, click Yes, show my devices.

      The Smart Home Monitor window displays devices connected to your network.

   4. From connected devices, select the device that has the Router type.
   5. In the right part of the device card, click Maximize.
   6. In the block that is opened by clicking Router settings, open the router configuration page in your browser.
2. On the authorization page, enter your login name and password. If you never changed those, you can find them on the underside of the router.
3. To close ports on your device, follow the instructions for your router model.

The table below lists ports and protocols that are most often targeted by intruders. Intruders typically scan the network for potential vulnerabilities and weak passwords. Kaspersky only scans ports that are listed in the table.