Filter ICMP messages

Note: If you use role-based administration:

You must have the Policy setting - firewall right to configure a firewall policy.
You cannot edit a policy if it is applied outside your active sub-estate.

For more information, see Managing roles and sub-estates.

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:

Double-click the firewall policy you want to change.
On the Welcome page of the Firewall Policy wizard, click Advanced firewall policy.
Under Configurations, click Configure next to the location for which you want to configure the firewall.
On the ICMP tab, select the In or Out check box to allow incoming or outgoing messages of the specified type.