Allowing and Blocking ICMP Communications

ICMP communications are used for network troubleshooting purposes. By default, all ICMP communications are allowed. For the detailed description of ICMP messages, please refer to:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xpehelp/html/xeconconfiguringicmpsettingsinwindowsfirewall.asp

If you need to block or to allow ICMP communications, follow these steps:

  1. Go to Home > IP Addresses (in the Server group) > Firewall > ICMP Protocol.

    The predefined rules for ICMP communications are listed. The S (status) column shows the icon if the firewall blocks the packets that match the rule, and the icon if the firewall allows the packets that match the rule to pass through.

  2. Do any of the following: