Why is the Anybus Defender 6024 blocking public pings even without rules or restrictions active?

This article describes why the Anybus Defender 6024 blocks public pings when no rules or restrictions are active on the device, as shown below:

APPLICABLE PRODUCTS

This article is applicable to:

• Anybus Defender 6024

   

QUESTION

• Why is the Anybus Defender 6024 blocking public pings even without rules or restrictions active?

ANSWER

• The Anybus Defender 6024 blocks any pings towards Google DNS by default. If the end-user wants to allow this traffic to pass, he or she needs to create specific rules to do so. 
• Also, please note that removing all the rules will not allow all the traffic because the device will block all the traffic by default until a new rule is created to allow such traffic.