Configurations

PerimeterX Configurations

Required values:

• px_app_id
• px_auth_token
• px_cookie_secret

px_app_id

The application ID. Required to initialize the Enforcer.

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const config: PerimeterXConfigurations = {
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  // ...
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  px_app_id: '<APP_ID>',
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  // ...
5
}

px_auth_token

The token used for authorization with the Human/PerimeterX backend. Required to initialize the Enforcer.

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const config: PerimeterXConfigurations = {
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  // ...
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  px_auth_token: '<AUTH_TOKEN>',
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  // ...
5
}

px_cookie_secret

The secret used to encrypt and decrypt the risk cookie. Required to initialize the Enforcer.

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const config: PerimeterXConfigurations = {
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  // ...
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  px_cookie_secret: '<COOKIE_SECRET>',
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  // ...
5
}

onPass

An optional handler that will be invoked for requests that pass HUMAN verification. The implementation can be the same handler used before installing the enforcer.

• Parameters
  • request: NextRequest
• Returns a NextResponse object (or a Promise resolving to a NextResponse)

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const config: PerimeterXConfigurations = {
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    // ...
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    onPass: (request: NextRequest): NextResponse => {
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        const response = NextResponse.next();
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        response.headers.set('test-header', 'test');
6
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        // Return the customized response
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        return response;
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    },
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  // ...
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}

onResponse

An optional function that allows for modification of the response when the HUMAN middleware returns a custom response (for example, a block response).

• Parameters
  • request: NextRequest
  • response: NextResponse
• Returns a NextResponse object (or a Promise resolving to a NextResponse)

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const config: PerimeterXConfigurations = {
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    // ...
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    onResponse: (request: NextRequest, response: NextResponse): NextResponse => {
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        const nextResponse = NextResponse.next();
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        nextResponse.headers.set('X-PX-Status', response.headers.get('test'));
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        // Return the customized response
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        return nextResponse;
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    },
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    // ...
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}

px_module_enabled

This boolean serves as an on/off switch for the entire module, providing a way to enable and disable all Enforcer capabilities quickly and easily.

Default: true

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const config: PerimeterXConfigurations = {
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  // ...
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  px_module_enabled: false,
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  // ...
5
}

px_module_mode

This feature controls the behavior of the enforcer by changing how it executes certain parts of the workflow. Most notably, different modes allow for analysis and fine-tuning of the enforcer behavior without serving block pages that affect end users.

Possible values:

• monitor - the enforcer will perform all functions without returning block responses
• active_blocking - the enforcer will return block responses when needed

Default: monitor

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const config: PerimeterXConfigurations = {
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  // ...
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  px_module_mode: 'active_blocking',
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  // ...
5
}

px_logger_severity

The verbosity of the logs generated by the enforcer. The enforcer will always use the console.log() function regardless of the configured logger severity.

Possible values:

• none - No logs will be generated
• error - Sparse logs will be generated only when errors occur
• debug - Detailed logs will always be generated (not advisable for production environments)

Default: error

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const config: PerimeterXConfigurations = {
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  // ...
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  px_logger_severity: 'debug',
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  // ...
5
}

px_s2s_timeout

The maximum time in milliseconds to wait for the risk API request. If this timeout is reached, the original request will
be allowed to pass (fail open).

Default: 1000

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const config: PerimeterXConfigurations = {
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  // ...
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  px_s2s_timeout: 2000,
4
  // ...
5
}

px_ip_headers

By default, the IP is taken from request.ip. However, if this is inaccurate, the enforcer can extract the IP from the headers configured here. The headers are traversed in the order they are listed. The first header value that exists will be used as the client IP.

Default: []

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const config: PerimeterXConfigurations = {
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  // ...
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  px_ip_headers: ['true-ip', 'true-client-ip'],
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  // ...
5
}

px_advanced_blocking_response_enabled

In specific cases (e.g., XHR post requests), a full captcha page render might not be an option. In such cases the advanced blocking response returns a JSON object containing all the information needed to render a customized captcha challenge implementation - be it a popup modal, a section on the page, etc. This allows for flexibility and customizability in terms of how the captcha pages are displayed.

Default: true

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const config: PerimeterXConfigurations = {
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  // ...
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  px_advanced_blocking_response_enabled: false,
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  // ...
5
}

px_first_party_enabled

To prevent suspicious or unwanted behavior on the client side, some browsers or extensions (e.g., adblockers) may deny the frontend JavaScript code from making requests to other domains. This prevents the PerimeterX sensor from making requests to the PerimeterX backends, which greatly limits PerimeterX’s detection capabilities. To avoid this problem, first_party enables the enforcer to be used as a proxy for PerimeterX servers, and to serve content to the browser from a first party endpoint (i.e., an endpoint on the customer’s domain).

Default: true

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const config: PerimeterXConfigurations = {
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  // ...
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  px_first_party_enabled: false,
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  // ...
5
}

px_custom_first_party_prefix

By default, first party endpoints always begin with the application ID without the initial “PX”. For example, if the application ID is PX12345678, then all first party routes will take the form /12345678/*. This configuration sets a custom prefix for first party routes to use in addition to the default prefix. When configured, the enforcer will respond to first party requests with endpoints matching the patterns /<px_custom_first_party_prefix>/init.js, /<px_custom_first_party_prefix>/xhr/*, and /<px_custom_first_party_prefix>/captcha/*.

Default: "" (when empty, will use the default as described above)

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const config: PerimeterXConfigurations = {
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    // ...
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    px_custom_first_party_prefix: "/custom-prefix",
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    // ...
5
}

px_custom_first_party_sensor_endpoint

For an application with ID PX12345678, the first party sensor endpoint is /12345678/init.js by default. This configuration customizes the entire first party sensor script endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/init.js) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/init.js) if one is configured.

Default: ""

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const config: PerimeterXConfigurations = {
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    // ...
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    px_custom_first_party_sensor_endpoint: "/human_sensor",
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    // ...
5
}

px_custom_first_party_xhr_endpoint

For an application with ID PX12345678, the first party XHR endpoint is /12345678/xhr by default. This configuration customizes the first party XHR endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/xhr/*) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/xhr/*) if one is configured.

Default: ""

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const config: PerimeterXConfigurations = {
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    // ...
3
    px_custom_first_party_xhr_endpoint: "/human_xhr",
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    // ...
5
}

px_custom_first_party_captcha_endpoint

For an application with ID PX12345678, the first party captcha endpoint is /12345678/captcha by default. This configuration customizes the first party captcha endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/captcha/*) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/captcha/*) if one is configured.

Default: ""

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const config: PerimeterXConfigurations = {
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    // ...
3
    px_custom_first_party_captcha_endpoint: "/human_captcha",
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    // ...
5
}

px_first_party_timeout_ms

The maximum time in milliseconds to wait for first party requests.

Default: 4000

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const config: PerimeterXConfigurations = {
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    // ...
3
    px_first_party_timeout_ms: 5000,
4
    // ...
5
}

px_bypass_monitor_header

When enabling the enforcer for the first time, it is recommended to do so in monitor mode to collect data before actually starting to block user requests. Prior to switching the module mode to active_blocking entirely, it’s also crucial to verify that the full blocking flow works as expected. This feature activates the full blocking flow even while in monitor mode if a particular header is present on the request.

Default: Empty

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const config: PerimeterXConfigurations = {
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  // ...
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  px_bypass_monitor_header: 'x-px-block',
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  // ...
5
}

px_enforced_routes

Customers may want certain, but not all, endpoints to be enforced by PerimeterX, even when the Enforcer is in Monitor Mode. These routes will go through the full enforcer workflow, including blocking requests when necessary. That is, even when the enforcer is in Monitor Mode, these defined routes will behave as if in Blocking Mode.

Default: []

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const config: PerimeterXConfigurations = {
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  // ...
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  px_enforced_routes: ['/enforced_route'],
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  // ...
5
}

px_custom_is_enforced_request

Customers may want certain, but not all, endpoints to be enforced by HUMAN, even when the Enforcer is in monitor mode. This configurable function provides a way to define which requests should be enforced based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be enforced (the request will behave as if in active blocking mode) or not.

• Parameters
  • request: NextRequest
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

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const config: PerimeterXConfigurations = {
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    // ...
3
    px_custom_is_enforced_request: (request: NextRequest): boolean | Promise<boolean> => {
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        return request.method === 'POST' && request.nextUrl.pathname.includes('/enforced_route');
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    },
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    // ...
7
}

px_monitored_routes

Enables certain endpoints to be monitored rather than enforced by PerimeterX, even when the enforcer is in active blocking mode.

Default: []

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const config: PerimeterXConfigurations = {
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  // ...
3
  px_monitored_routes: ['/monitored_route'],
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  // ...
5
}

px_custom_is_monitored_request

Customers may want certain, but not all, endpoints to be monitored by HUMAN, even when the Enforcer is in active_blocking mode. This configurable function provides a way to define which requests should be monitored based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be monitored (the request will behave as if in monitor mode) or not.

• Parameters
  • request: NextRequest
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

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const config: PerimeterXConfigurations = {
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    // ...
3
    px_custom_is_monitored_request: (request: NextRequest): boolean | Promise<boolean> => {
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        return request.method === 'GET' && request.nextUrl.pathname.includes('/monitored');
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    },
6
    // ...
7
}

px_sensitive_headers

The PerimeterX detector requires information about the HTTP request as part of its bot detections. Certain headers may contain
information that should not be forwarded to other servers, including the PerimeterX backend. Configuring these header names as
sensitive headers will remove these headers from requests sent to other backends by PerimeterX.

Default: [cookie, cookies]

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_sensitive_headers: ['x-sensitive-token'],
4
  // ...
5
}

px_sensitive_routes

Certain endpoints may require more stringent protection from bot attacks (e.g., endpoints that execute payments or handle personal information). In these cases, routes can be configured as sensitive routes, meaning risk API calls will be made even if the request contains a valid, unexpired cookie.

Default: []

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_sensitive_routes: ['/login', '/checkout'],
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  // ...
5
}

px_custom_is_sensitive_request

Requests can be configured as sensitive, meaning risk API calls will be made even if the request contains a valid, unexpired cookie. This configurable function provides a way to define which requests should be considered sensitive based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be considered sensitive or not.

• Parameters
  • request: NextRequest
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

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const config: PerimeterXConfigurations = {
2
    // ...
3
    px_custom_is_sensitive_request: (request: NextRequest): boolean | Promise<boolean> => {
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        return request.method === 'POST' || request.method === 'PUT';
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    },
6
    // ...
7
}

px_filter_by_extension

PerimeterX does not enforce static assets such as images and documents. To prevent unnecessary API calls to PerimeterX
servers and needless computation, the enforcer filters all requests with a valid static file extension. Filtering by extension
only applies to HTTP requests with methods GET and HEAD.

Default: ['.css', '.bmp', '.tif', '.ttf', '.docx', '.woff2', '.js', '.pict', '.tiff', '.eot', '.xlsx', '.jpg', '.csv', '.eps', '.woff', '.xls', '.jpeg', '.doc', '.ejs', '.otf', '.pptx', '.gif', '.pdf', '.swf', '.svg', '.ps', '.ico', '.pls', '.midi', '.svgz', '.class', '.png', '.ppt', '.mid', '.webp', '.jar', '.json', '.xml']

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_filter_by_extension: ['.css', '.js', '.png'],
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  // ...
5
}

px_filter_by_http_method

PerimeterX does not enforce static assets such as images and documents. To prevent unnecessary API calls to PerimeterX servers and needless computation, the enforcer filters all requests with a valid static file extension.

Default: []

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_filter_by_http_method: ['OPTIONS'],
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  // ...
5
}

px_filter_by_ip

Filters out requests according to their IP address, avoiding unnecessary traffic in the enforcer verification flow and reducing operation costs.

Default: []

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const config: PerimeterXConfigurations = {
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  // ...
3
  px_filter_by_ip: ['1.1.1.1', '2.2.2.2/8'],
4
  // ...
5
}

px_filter_by_route

Routes (endpoints) specified here will not be blocked, regardless of the score they receive. A client request to an allowed route will not generate any risk or async activities.

Default: []

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const config: PerimeterXConfigurations = {
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  // ...
3
  px_filter_by_route: ['/filtered_route'],
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  // ...
5
}

px_filter_by_user_agent

Filters out requests according to their user agent value, avoiding unnecessary traffic in the enforcer verification flow and reducing operation costs.

Default: []

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_filter_by_user_agent: ['filtered_UA'],
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  // ...
5
}

px_custom_is_filtered_request

Customers may prefer to filter certain requests (i.e., not apply HUMAN enforcement at all). These requests will not be blocked, and they will not generate any risk or async activities. This configurable function provides a way to define which requests should be filtered based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be filtered or not.

• Parameters
  • request: NextRequest
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

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const config: PerimeterXConfigurations = {
2
    // ...
3
    px_custom_is_filtered_request: (request: NextRequest): boolean | Promise<boolean> => {
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        return request.method === 'GET' && request.nextUrl.pathname.includes('/static/');
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    },
6
    // ...
7
}

px_css_ref

Provides a way to include an additional custom .css file to add to the block page.

Default: Empty

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const config: PerimeterXConfigurations = {
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  // ...
3
  px_css_ref: 'https://www.example.com/custom_style.css',
4
  // ...
5
}

px_js_ref

Provides a way to include a custom JS script to add to the block page. This script will run after the default JS scripts.

Default: Empty

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_js_ref: 'https://www.example.com/custom_script.js',
4
  // ...
5
}

px_custom_logo

Adds a custom logo to the block page that will be shown to users. This aligns the block page with the customer’s brand.

Default: Empty

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_custom_logo: 'https://www.example.com/custom_logo.png',
4
  // ...
5
}

px_custom_cookie_header

The Enforcer attempts to extract the PerimeterX cookies from the ‘Cookie’ header. If the PerimeterX cookies are transferred on a header other than ‘Cookies’, the header name should be configured here.

Default: “x-px-cookies”

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const config: PerimeterXConfigurations = {
2
  // ...
3
  px_custom_cookie_header: 'x-px-cookie',
4
  // ...
5
}

px_user_agent_max_length

The maximum length of the User-Agent header. If the user agent header value exceeds this length, it will be truncated to this length prior to processing.

Default: 8528

1
const config: PerimeterXConfigurations = {
2
  // ...
3
  px_user_agent_max_length: 2048,
4
  // ...
5
}

px_additional_activity_handler

The additional activity handler is a custom function passed to the enforcer. The enforcer runs this callback after sending page_requested or block activity to the collector, and before forwarding the request to the next step in the pipeline. A common use case of the additional activity handler is to set the score as a variable or header. Then the application can read the score and do what is defined within the application’s logic.

• Parameters
  • config: PerimeterXConfigurations
  • context: IContext
  • • request: NextRequest
• Returns void or a Promise resolving to void

Default: null

1
const config: PerimeterXConfigurations = {
2
  // ...
3
  px_additional_activity_handler: (
4
      config: PerimeterXConfigurations,
5
      context: IContext,
6
       request: NextRequest
7
  ): void => {
8
            ...
9
  },
10
  // ...
11
}

px_enrich_custom_parameters

This custom function enriches activities sent from the enforcer to PerimeterX with additional custom data. This data can include user information, session IDs, or other data that PerimeterX should have access to. These custom parameters are defined by a configurable function that must return an object that contains these custom parameters. There is a limit of 10 custom parameters.

• Parameters
  • config: PerimeterXConfigurations
  • request: NextRequest
• Returns CustomParameters | Promise<CustomParameters>

Default: null

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_enrich_custom_parameters: async (
4
        config: PerimeterXConfigurations,
5
        request: NextRequest,
6
    ): `CustomParameters` | `Promise<`CustomParameters`>` => {
7
        const body = request.method === 'POST' && 
8
            request.get('content-type')?.includes('application/json') ? 
9
            request.body : null;
10
        return {
11
            custom_param1: 'hardcoded value',
12
            custom_param2: request.get('header-name'),
13
            custom_param3: body?.['body_property']
14
        };
15
    },
16
    // ...
17
}

px_url_decode_reserved_characters

By design, the enforcer treats reserved characters in URLs differently from their percent-encoded counterparts. For example, the URL https://example.com/path-with-%3F-mark will be parsed as having path /path-with-%3F-mark, while the URL https://example.com/path-with-?-mark would be parsed as having path /path-with- and query parameters -mark.

However, some servers, frameworks, or business logic may apply percent decoding to reserved characters within the URL path. Setting this configuration to true will apply percent decoding to reserved characters in the URL path prior to parsing.

Default: false

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_url_decode_reserved_characters: true,
4
    // ...
5
}

Account Defender Configurations

px_jwt_cookie_name

The name of the cookie that contains the JWT token from which user identifiers should be extracted.

Default: ""

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_cookie_name: 'auth',
4
    // ...
5
}

px_jwt_cookie_user_id_field_name

The field name in the JWT object, extracted from the JWT cookie, that contains the user ID to be extracted and reported.

Default: ""

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_cookie_user_id_field_name: 'nameID',
4
    // ...
5
}

px_jwt_cookie_additional_field_names

The field names in the JWT object, extracted from the JWT cookie, that should be extracted and reported in addition to the user ID.

Default: []

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_cookie_additional_field_names: ['exp', 'iss'],
4
    // ...
5
}

px_jwt_header_name

The name of the header that contains the JWT token from which user identifiers should be extracted.

Default: ""

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_header_name: 'x-jwt-authorization',
4
    // ...
5
}

px_jwt_header_user_id_field_name

The field name in the JWT object, extracted from the JWT header, that contains the user ID to be extracted and reported.

Default: ""

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_header_user_id_field_name: 'sub',
4
    // ...
5
}

px_jwt_header_additional_field_names

The field names in the JWT object, extracted from the JWT header, that should be extracted and reported in addition to the user ID.

Default: []

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_jwt_header_additional_field_names: ['exp', 'iss'],
4
    // ...
5
}

px_secured_pxhd_enabled

Whether the PXHD cookie _pxhd set on the HTTP response should include the Secure attribute.

Possible values:

• true - PXHD cookie will be set with the Secure attribute
• false - PXHD cookie will not be set with the Secure attribute

Default: false

1
const config: PerimeterXConfigurations = {
2
    // ...
3
    px_secured_pxhd_enabled: true,
4
    // ...
5
}