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This is the API Reference for Network Firewall.

See: Description

Package Description

This is the API Reference for Network Firewall. This guide is for developers who need detailed information about the Network Firewall API actions, data types, and errors.

Network Firewall is a stateful, managed, network firewall and intrusion detection and prevention service for Amazon Virtual Private Cloud (Amazon VPC). With Network Firewall, you can filter traffic at the perimeter of your VPC. This includes filtering traffic going to and coming from an internet gateway, NAT gateway, or over VPN or Direct Connect. Network Firewall uses rules that are compatible with Suricata, a free, open source network analysis and threat detection engine. Network Firewall supports Suricata version 5.0.2. For information about Suricata, see the Suricata website.

You can use Network Firewall to monitor and protect your VPC traffic in a number of ways. The following are just a few examples:

To enable Network Firewall for your VPCs, you perform steps in both Amazon VPC and in Network Firewall. For information about using Amazon VPC, see Amazon VPC User Guide.

To start using Network Firewall, do the following:

  1. (Optional) If you don't already have a VPC that you want to protect, create it in Amazon VPC.

  2. In Amazon VPC, in each Availability Zone where you want to have a firewall endpoint, create a subnet for the sole use of Network Firewall.

  3. In Network Firewall, create stateless and stateful rule groups, to define the components of the network traffic filtering behavior that you want your firewall to have.

  4. In Network Firewall, create a firewall policy that uses your rule groups and specifies additional default traffic filtering behavior.

  5. In Network Firewall, create a firewall and specify your new firewall policy and VPC subnets. Network Firewall creates a firewall endpoint in each subnet that you specify, with the behavior that's defined in the firewall policy.

  6. In Amazon VPC, use ingress routing enhancements to route traffic through the new firewall endpoints.

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