Filter ICMP messages

Internet Control Message Protocol (ICMP) messages allow the computers on a network to share error and status information. You can allow or block specific types of incoming or outgoing ICMP message.

You should only filter ICMP messages if you are familiar with networking protocols. For explanations of the ICMP message types, see Explanation of ICMP message types.

To filter ICMP messages:

  1. On the Home page, under Firewall, click Configure firewall.

    For information about the Home page, see About the Home page.

  2. Under Configurations, click Configure next to the location that you want to configure.
  3. Click the ICMP tab. The interface differs based on the operating system:
    • In Windows 7 and earlier operating systems, select the In or Out check box to allow incoming or outgoing messages of the specified type.
    • On Windows 8 or later, ICMP messages types are categorized into sections. You can select common settings from the drop-down list, or click Details to view or edit the settings.