field

The name of the field. The possible values are:

• http-header – [ALB] Matches on an HTTP header field.

• http-request-method – [ALB] Matches on the HTTP request method.

• host-header – [ALB] Matches on the host header.

• path-pattern – [ALB] Matches on the URL path of the request.

• query-string – [ALB] Matches on a query string parameter.

• source-ip – [ALB, NLB] Matches on the source IP address. For ALB, use SourceIpConfig with Values to specify CIDR ranges. For NLB, use SourceIpConfig with IpAddressType to match the IP address type (ipv4 or ipv6).