ICMP Filtering

ICMP Filtering lets you specify the types and directions of ICMP messages allowed. The different types of ICMP messages are listed in Types of ICMP Messages.

If you wish to change what ICMP messages you want to allow and want to block:

  1. Select Options

  2. Select System

  3. Click Settings in ICMP field

  4. Uncheck the appropriate checkbox for the messages you want to block and check those messages you want to allow.

  5. Press OK.

Important

It is recommended that you do not change the ICMP settings unless you are certain that you are making the right changes. If any are incorrectly changed for your system or network, it could result in your firewall not working as expected.

Note

The Default button on the ICMP settings dialog resets all the ICMP settings to what they were when Outpost Firewall was first installed.