Making HTTPS requests to AWS Network Firewall

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Network Firewall requests are HTTPS requests, as defined by RFC 2616. Like any HTTP request, a request to Network Firewall contains a request method, a URI, request headers, and a request body. The response contains an HTTP status code, response headers, and sometimes a response body.

Request URI

The request URI is always a single forward slash, /.

HTTP headers

Network Firewall requires the following information in the header of an HTTP request.

Host (Required)

The endpoint that specifies where your resources are created. You can find the various endpoints in AWS service endpoints. For example, the value of the Host header for Network Firewall for a CloudFront distribution is network-firewall.amazonaws.com:443.

x-amz-date or Date (Required)

The date used to create the signature that is contained in the Authorization header. Specify the date in ISO 8601 standard format, in UTC time, as shown in the following example:

x-amz-date: 20151007T174952Z

You must include either x-amz-date or Date. (Some HTTP client libraries don't let you set the Date header). When an x-amz-date header is present, Network Firewall ignores any Date header when authenticating the request.

The timestamp must be within 15 minutes of the AWS system time when the request is received. If it isn't, the request fails with the RequestExpired error code to prevent someone else from replaying your requests.

Authorization (Required)

The information required for request authentication. For more information about constructing this header, see Authenticating requests.

X-Amz-Target (Required)

The operation, provided as a concatenation of the following values:

• NetworkFirewall_

• The API version without punctuation

• A period (.)

• The name of the operation

Example:

NetworkFirewall_20201112.CreateFirewall

Content-Type (Conditional)

The type and version of the content. Specify the version of JSON, as shown in the following example:

Content-Type: application/x-amz-json-1.0

Condition: Required for POST requests.

Content-Length (Conditional)

The length of the message, without the headers, according to RFC 2616.

Condition: Required if the request body itself contains information. Most toolkits add this header automatically.

The following is an example header for an HTTP request to create a firewall in Network Firewall:

POST / HTTP/1.1
Host: network-firewall.amazonaws.com:443
X-Amz-Date: 20151007T174952Z
Authorization: AWS4-HMAC-SHA256 
               Credential=AKIAIOSFODNN7EXAMPLE/20151007/us-east-2/network-firewall/aws4_request,
               SignedHeaders=host;x-amz-date;x-amz-target,
               Signature=145b1567ab3c50d929412f28f52c45dbf1e63ec5c66023d232a539a4afd11fd9
X-Amz-Target: NetworkFirewall_20201112.CreateFirewall
Accept: */*
Content-Type: application/x-amz-json-1.0; charset=UTF-8
Content-Length: 231
Connection: Keep-Alive

HTTP request body

Many Network Firewall API actions require you to include JSON-formatted data in the body of the request.