Terraform module to create and manage AWS WAFv2 rules.
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It's 100% Open Source and licensed under the APACHE2.
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IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.
Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.
For a complete example, see examples/complete.
For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.
module "label" {
source = "cloudposse/label/null"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = "eg"
stage = "prod"
name = "waf"
delimiter = "-"
tags = {
"BusinessUnit" = "XYZ",
}
}
module "waf" {
source = "cloudposse/waf/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
geo_match_statement_rules = [
{
name = "rule-10"
action = "count"
priority = 10
statement = {
country_codes = ["NL", "GB"]
}
visibility_config = {
cloudwatch_metrics_enabled = true
sampled_requests_enabled = false
metric_name = "rule-10-metric"
}
},
{
name = "rule-11"
action = "allow"
priority = 11
statement = {
country_codes = ["US"]
}
visibility_config = {
cloudwatch_metrics_enabled = true
sampled_requests_enabled = false
metric_name = "rule-11-metric"
}
}
]
context = module.label.context
}
Here is an example of using this module:
examples/complete
- complete example of using this module
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
Name | Version |
---|---|
terraform | >= 0.13.0 |
aws | >= 2.0 |
Name | Version |
---|---|
aws | >= 2.0 |
Name | Source | Version |
---|---|---|
this | cloudposse/label/null | 0.25.0 |
Name | Type |
---|---|
aws_wafv2_web_acl.default | resource |
aws_wafv2_web_acl_association.default | resource |
aws_wafv2_web_acl_logging_configuration.default | resource |
Name | Description | Type | Default | Required |
---|---|---|---|---|
additional_tag_map | Additional key-value pairs to add to each map in tags_as_list_of_maps . Not added to tags or id .This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration. |
map(string) |
{} |
no |
association_resource_arns | A list of ARNs of the resources to associate with the web ACL. This must be an ARN of an Application Load Balancer or an Amazon API Gateway stage. |
list(string) |
[] |
no |
attributes | ID element. Additional attributes (e.g. workers or cluster ) to add to id ,in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the delimiter and treated as a single ID element. |
list(string) |
[] |
no |
byte_match_statement_rules | A rule statement that defines a string match search for AWS WAF to apply to web requests. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: field_to_match: The part of a web request that you want AWS WAF to inspect. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#field-to-match text_transformation: Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#text-transformation visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
context | Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as null to use default value.Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged. |
any |
{ |
no |
default_action | Specifies that AWS WAF should allow requests by default. Possible values: allow , block . |
string |
"block" |
no |
delimiter | Delimiter to be used between ID elements. Defaults to - (hyphen). Set to "" to use no delimiter at all. |
string |
null |
no |
description | A friendly description of the WebACL. | string |
"Managed by Terraform" |
no |
descriptor_formats | Describe additional descriptors to be output in the descriptors output map.Map of maps. Keys are names of descriptors. Values are maps of the form {<br> format = string<br> labels = list(string)<br>} (Type is any so the map values can later be enhanced to provide additional options.)format is a Terraform format string to be passed to the format() function.labels is a list of labels, in order, to pass to format() function.Label values will be normalized before being passed to format() so they will beidentical to how they appear in id .Default is {} (descriptors output will be empty). |
any |
{} |
no |
enabled | Set to false to prevent the module from creating any resources | bool |
null |
no |
environment | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | string |
null |
no |
geo_match_statement_rules | A rule statement used to identify web requests based on country of origin. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: country_codes: A list of two-character country codes. forwarded_ip_config: fallback_behavior: The match status to assign to the web request if the request doesn't have a valid IP address in the specified position. Possible values: MATCH , NO_MATCH header_name: The name of the HTTP header to use for the IP address. visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
id_length_limit | Limit id to this many characters (minimum 6).Set to 0 for unlimited length.Set to null for keep the existing setting, which defaults to 0 .Does not affect id_full . |
number |
null |
no |
ip_set_reference_statement_rules | A rule statement used to detect web requests coming from particular IP addresses or address ranges. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: arn: The ARN of the IP Set that this statement references. ip_set_forwarded_ip_config: fallback_behavior: The match status to assign to the web request if the request doesn't have a valid IP address in the specified position. Possible values: MATCH , NO_MATCH header_name: The name of the HTTP header to use for the IP address. position: The position in the header to search for the IP address. Possible values include: FIRST , LAST , or ANY .visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
label_key_case | Controls the letter case of the tags keys (label names) for tags generated by this module.Does not affect keys of tags passed in via the tags input.Possible values: lower , title , upper .Default value: title . |
string |
null |
no |
label_order | The order in which the labels (ID elements) appear in the id .Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. |
list(string) |
null |
no |
label_value_case | Controls the letter case of ID elements (labels) as included in id ,set as tag values, and output by this module individually. Does not affect values of tags passed in via the tags input.Possible values: lower , title , upper and none (no transformation).Set this to title and set delimiter to "" to yield Pascal Case IDs.Default value: lower . |
string |
null |
no |
labels_as_tags | Set of labels (ID elements) to include as tags in the tags output.Default is to include all labels. Tags with empty values will not be included in the tags output.Set to [] to suppress all generated tags.Notes: The value of the name tag, if included, will be the id , not the name .Unlike other null-label inputs, the initial setting of labels_as_tags cannot bechanged in later chained modules. Attempts to change it will be silently ignored. |
set(string) |
[ |
no |
log_destination_configs | The Amazon Kinesis Data Firehose ARNs. | list(string) |
[] |
no |
managed_rule_group_statement_rules | A rule statement used to run the rules that are defined in a managed rule group. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. override_action: The override action to apply to the rules in a rule group. Possible values: count , none statement: name: The name of the managed rule group. vendor_name: The name of the managed rule group vendor. excluded_rule: The list of names of the rules to exclude. visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
name | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a tag .The "name" tag is set to the full id string. There is no tag with the value of the name input. |
string |
null |
no |
namespace | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | string |
null |
no |
rate_based_statement_rules | A rate-based rule tracks the rate of requests for each originating IP address, and triggers the rule action when the rate exceeds a limit that you specify on the number of requests in any 5-minute time span. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: aggregate_key_type: Setting that indicates how to aggregate the request counts. Possible values include: FORWARDED_IP or IP limit: The limit on requests per 5-minute period for a single originating IP address. forwarded_ip_config: fallback_behavior: The match status to assign to the web request if the request doesn't have a valid IP address in the specified position. Possible values: MATCH , NO_MATCH header_name: The name of the HTTP header to use for the IP address. visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
redacted_fields | The parts of the request that you want to keep out of the logs. method_enabled: Whether to enable redaction of the HTTP method. The method indicates the type of operation that the request is asking the origin to perform. uri_path_enabled: Whether to enable redaction of the URI path. This is the part of a web request that identifies a resource. query_string_enabled: Whether to enable redaction of the query string. This is the part of a URL that appears after a ? character, if any.single_header: The list of names of the query headers to redact. |
map(any) |
{} |
no |
regex_pattern_set_reference_statement_rules | A rule statement used to search web request components for matches with regular expressions. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: arn: The Amazon Resource Name (ARN) of the Regex Pattern Set that this statement references. field_to_match: The part of a web request that you want AWS WAF to inspect. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#field-to-match text_transformation: Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#text-transformation visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
regex_replace_chars | Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits. |
string |
null |
no |
rule_group_reference_statement_rules | A rule statement used to run the rules that are defined in an WAFv2 Rule Group. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. override_action: The override action to apply to the rules in a rule group. Possible values: count , none statement: arn: The ARN of the aws_wafv2_rule_group resource.excluded_rule: The list of names of the rules to exclude. visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
scope | Specifies whether this is for an AWS CloudFront distribution or for a regional application. Possible values are CLOUDFRONT or REGIONAL .To work with CloudFront, you must also specify the region us-east-1 (N. Virginia) on the AWS provider. |
string |
"REGIONAL" |
no |
size_constraint_statement_rules | A rule statement that uses a comparison operator to compare a number of bytes against the size of a request component. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: comparison_operator: The operator to use to compare the request part to the size setting. Possible values: EQ , NE , LE , LT , GE , or GT .size: The size, in bytes, to compare to the request part, after any transformations. Valid values are integers between 0 and 21474836480 , inclusive.field_to_match: The part of a web request that you want AWS WAF to inspect. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#field-to-match text_transformation: Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#text-transformation visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
sqli_match_statement_rules | An SQL injection match condition identifies the part of web requests, such as the URI or the query string, that you want AWS WAF to inspect. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. statement: field_to_match: The part of a web request that you want AWS WAF to inspect. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#field-to-match text_transformation: Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#text-transformation visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
stage | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | string |
null |
no |
tags | Additional tags (e.g. {'BusinessUnit': 'XYZ'} ).Neither the tag keys nor the tag values will be modified by this module. |
map(string) |
{} |
no |
tenant | ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for | string |
null |
no |
visibility_config | Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
map(string) |
{} |
no |
xss_match_statement_rules | A rule statement that defines a cross-site scripting (XSS) match search for AWS WAF to apply to web requests. action: The action that AWS WAF should take on a web request when it matches the rule's statement. name: A friendly name of the rule. priority: If you define more than one Rule in a WebACL, AWS WAF evaluates each request against the rules in order based on the value of priority. AWS WAF processes rules with lower priority first. xss_match_statement: field_to_match: The part of a web request that you want AWS WAF to inspect. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#field-to-match text_transformation: Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#text-transformation visibility_config: Defines and enables Amazon CloudWatch metrics and web request sample collection. cloudwatch_metrics_enabled: Whether the associated resource sends metrics to CloudWatch. metric_name: A friendly name of the CloudWatch metric. sampled_requests_enabled: Whether AWS WAF should store a sampling of the web requests that match the rules. |
list(any) |
null |
no |
Name | Description |
---|---|
arn | The ARN of the WAF WebACL. |
capacity | The web ACL capacity units (WCUs) currently being used by this web ACL. |
id | The ID of the WAF WebACL. |
logging_config_id | The ARN of the WAFv2 Web ACL logging configuration. |
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Check out these related projects.
- terraform-null-label - Terraform Module to define a consistent naming convention by (namespace, stage, name, [attributes])
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