The default stateless action for Network Firewall policies should be drop or forward for fragmented packets¶

This control checks whether the default stateless action for fragmented packets for a Network Firewall policy is drop or forward. The control passes if Drop or Forward is selected, and fails if Pass is selected.

How to fix¶

Attribute firewall_policy[0].stateless_fragment_default_actions of aws_networkfirewall_firewall_policy must be non-empty.

Implementation options¶

Choose the option that matches how you manage Terraform. All options satisfy this control.

Option 1: Terraform AWS provider resources¶

If you manage resources directly, configure the relevant Terraform AWS provider resources to meet this control. See docs for the resources involved: aws_networkfirewall_firewall_policy.

resource "aws_networkfirewall_firewall_policy" "this" {
  firewall_policy {
    stateless_default_actions          = ["aws:drop"]
    stateless_fragment_default_actions = ["aws:drop"]
  }
  name = "pofix-example-policy"
}

Tool mappings¶

Use these identifiers to cross-reference this control across tools, reports, and evidence.

• Compliance.tf (CTF) Control: networkfirewall_firewall_policy_default_stateless_action_check_fragmented_packets

• AWS Config Managed Rule: NETFW_POLICY_DEFAULT_ACTION_FRAGMENT_PACKETS

• Powerpipe Control: aws_compliance.control.networkfirewall_firewall_policy_default_stateless_action_check_fragmented_packets