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---
stage: Secure
group: Dynamic Analysis
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
type: reference, howto
---
# DAST browser-based analyzer **(ULTIMATE)**
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/323423) in GitLab 13.12 as a Beta feature.
> - [Generally available](https://gitlab.com/groups/gitlab-org/-/epics/9023) in GitLab 15.7 (GitLab DAST v3.0.50).
WARNING:
Do not run DAST scans against a production server. Not only can it perform *any* function that
a user can, such as clicking buttons or submitting forms, but it may also trigger bugs, leading to modification or loss of production data. Only run DAST scans against a test server.
The DAST browser-based analyzer was built by GitLab to scan modern-day web applications for vulnerabilities.
Scans run in a browser to optimize testing applications heavily dependent on JavaScript, such as single-page applications.
See [how DAST scans an application](#how-dast-scans-an-application) for more information.
To add the analyzer to your CI/CD pipeline, see [getting started](#getting-started).
## How DAST scans an application
A scan performs the following steps:
1. [Authenticate](authentication.md), if configured.
1. [Crawl](#crawling-an-application) the target application to discover the surface area of the application by performing user actions such as following links, clicking buttons, and filling out forms.
1. [Passive scan](#passive-scans) to search for vulnerabilities in HTTP messages and pages discovered while crawling.
1. [Active scan](#active-scans) to search for vulnerabilities by injecting payloads into HTTP requests recorded during the crawl phase.
### Crawling an application
A "navigation" is an action a user might take on a page, such as clicking buttons, clicking anchor links, opening menu items, or filling out forms.
A "navigation path" is a sequence of navigation actions representing how a user might traverse an application.
DAST discovers the surface area of an application by crawling pages and content and identifying navigation paths.
Crawling is initialized with a navigation path containing one navigation that loads the target application URL in a specially-instrumented Chromium browser.
DAST then crawls navigation paths until all have been crawled.
To crawl a navigation path, DAST opens a browser window and instructs it to perform all the navigation actions in the navigation path.
When the browser has finished loading the result of the final action, DAST inspects the page for actions a user might take,
creates a new navigation for each found, and adds them to the navigation path to form new navigation paths. For example:
1. DAST processes navigation path `LoadURL[https://example.com]`.
1. DAST finds two user actions, `LeftClick[class=menu]` and `LeftClick[id=users]`.
1. DAST creates two new navigation paths, `LoadURL[https://example.com] -> LeftClick[class=menu]` and `LoadURL[https://example.com] -> LeftClick[id=users]`.
1. Crawling begins on the two new navigation paths.
It's common for an HTML element to exist in multiple places in an application, such as a menu visible on every page.
Duplicate elements can cause crawlers to crawl the same pages again or become stuck in a loop.
DAST uses an element uniqueness calculation based on HTML attributes to discard new navigation actions it has previously crawled.
### Passive scans
Passive scans check for vulnerabilities in the pages discovered during the crawl phase of the scan.
Passive scans are enabled by default.
The checks search HTTP messages, cookies, storage events, console events, and DOM for vulnerabilities.
Examples of passive checks include searching for exposed credit cards, exposed secret tokens, missing content security policies, and redirection to untrusted locations.
See [checks](checks/index.md) for more information about individual checks.
### Active scans
Active scans check for vulnerabilities by injecting attack payloads into HTTP requests recorded during the crawl phase of the scan.
Active scans are disabled by default due to the nature of their probing attacks.
DAST analyzes each recorded HTTP request for injection locations, such as query values, header values, cookie values, form posts, and JSON string values.
Attack payloads are injected into the injection location, forming a new request.
DAST sends the request to the target application and uses the HTTP response to determine attack success.
Active scans run two types of active check:
- A match response attack analyzes the response content to determine attack success. For example, if an attack attempts to read the system password file, a finding is created when the response body contains evidence of the password file.
- A timing attack uses the response time to determine attack success. For example, if an attack attempts to force the target application to sleep, a finding is created when the application takes longer to respond than the sleep time. Timing attacks are repeated multiple times with different attack payloads to minimize false positives.
A simplified timing attack works as follows:
1. The crawl phase records the HTTP request `https://example.com?search=people`.
1. DAST analyzes the URL and finds a URL parameter injection location `https://example.com?search=[INJECT]`.
1. The active check defines a payload, `sleep 10`, that attempts to get a Linux host to sleep.
1. DAST send a new HTTP request to the target application with the injected payload `https://example.com?search=sleep%2010`.
1. The target application is vulnerable if it executes the query parameter value as a system command without validation, for example, `system(params[:search])`
1. DAST creates a finding if the response time takes longer than 10 seconds.
## Getting started
To run a DAST scan:
- Read the [prerequisite](index.md#prerequisites) conditions for running a DAST scan.
- Create a [DAST job](#create-a-dast-cicd-job) in your CI/CD pipeline.
- [Authenticate](#authentication) as a user if your application requires it.
### Create a DAST CI/CD job
> - This template was [updated](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62597) to DAST_VERSION: 2 in
GitLab 14.0.
> - This template was [updated](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/87183) to DAST_VERSION: 3 in
GitLab 15.0.
To add DAST scanning to your application, use the DAST job defined
in the GitLab DAST CI/CD template file. Updates to the template are provided with GitLab
upgrades, allowing you to benefit from any improvements and additions.
To create the CI/CD job:
1. Include the appropriate CI/CD template:
- [`DAST.gitlab-ci.yml`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Security/DAST.gitlab-ci.yml):
Stable version of the DAST CI/CD template.
- [`DAST.latest.gitlab-ci.yml`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Security/DAST.latest.gitlab-ci.yml):
Latest version of the DAST template. ([Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/254325)
in GitLab 13.8).
WARNING:
The latest version of the template may include breaking changes. Use the
stable template unless you need a feature provided only in the latest template.
For more information about template versioning, see the
[CI/CD documentation](../../../development/cicd/templates.md#latest-version).
1. Add a `dast` stage to your GitLab CI/CD stages configuration.
1. Define the URL to be scanned by DAST by using one of these methods:
- Set the `DAST_WEBSITE` [CI/CD variable](../../../ci/yaml/index.md#variables).
If set, this value takes precedence.
- Adding the URL in an `environment_url.txt` file at your project's root is great for testing in
dynamic environments. To run DAST against an application dynamically created during a GitLab CI/CD
pipeline, write the application URL to an `environment_url.txt` file. DAST automatically reads the
URL to find the scan target.
You can see an [example of this in our Auto DevOps CI YAML](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml).
1. Set the `DAST_BROWSER_SCAN` [CI/CD variable](../../../ci/yaml/index.md#variables) to `"true"`.
For example:
```yaml
stages:
- build
- test
- deploy
- dast
include:
- template: DAST.gitlab-ci.yml
dast:
variables:
DAST_WEBSITE: "https://example.com"
DAST_BROWSER_SCAN: "true"
```
### Authentication
The browser-based analyzer can authenticate a user prior to a scan. See [Authentication](authentication.md) for
configuration instructions.
### Available CI/CD variables
These CI/CD variables are specific to the browser-based DAST analyzer. They can be used to customize the behavior of
DAST to your requirements.
For authentication CI/CD variables, see [Authentication](authentication.md).
| CI/CD variable | Type | Example | Description |
|:--------------------------------------------|:---------------------------------------------------------|----------------------------------------|:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `DAST_ADVERTISE_SCAN` | boolean | `true` | Set to `true` to add a `Via` header to every request sent, advertising that the request was sent as part of a GitLab DAST scan. [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/334947) in GitLab 14.1. |
| `DAST_BROWSER_ACTION_STABILITY_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `800ms` | The maximum amount of time to wait for a browser to consider a page loaded and ready for analysis after completing an action. |
| `DAST_BROWSER_ACTION_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `7s` | The maximum amount of time to wait for a browser to complete an action. |
| `DAST_BROWSER_ALLOWED_HOSTS` | List of strings | `site.com,another.com` | Hostnames included in this variable are considered in scope when crawled. By default the `DAST_WEBSITE` hostname is included in the allowed hosts list. Headers set using `DAST_REQUEST_HEADERS` are added to every request made to these hostnames. |
| `DAST_BROWSER_COOKIES` | dictionary | `abtesting_group:3,region:locked` | A cookie name and value to be added to every request. |
| `DAST_BROWSER_CRAWL_GRAPH` | boolean | `true` | Set to `true` to generate an SVG graph of navigation paths visited during crawl phase of the scan. You must also define `gl-dast-crawl-graph.svg` as a CI job artifact to be able to access the generated graph. |
| `DAST_BROWSER_CRAWL_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `5m` | The maximum amount of time to wait for the crawl phase of the scan to complete. Defaults to `24h`. |
| `DAST_BROWSER_DEVTOOLS_LOG` | string | `Default:messageAndBody,truncate:2000` | Set to log protocol messages between DAST and the Chromium browser. |
| `DAST_BROWSER_DOM_READY_AFTER_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `200ms` | Define how long to wait for updates to the DOM before checking a page is stable. Defaults to `500ms`. |
| `DAST_BROWSER_ELEMENT_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `600ms` | The maximum amount of time to wait for an element before determining it is ready for analysis. |
| `DAST_BROWSER_EXCLUDED_ELEMENTS` | selector | `a[href='2.html'],css:.no-follow` | Comma-separated list of selectors that are ignored when scanning. |
| `DAST_BROWSER_EXCLUDED_HOSTS` | List of strings | `site.com,another.com` | Hostnames included in this variable are considered excluded and connections are forcibly dropped. |
| `DAST_BROWSER_EXTRACT_ELEMENT_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `5s` | The maximum amount of time to allow the browser to extract newly found elements or navigations. |
| `DAST_BROWSER_FILE_LOG` | List of strings | `brows:debug,auth:debug` | A list of modules and their intended logging level for use in the file log. |
| `DAST_BROWSER_FILE_LOG_PATH` | string | `/output/browserker.log` | Set to the path of the file log. |
| `DAST_BROWSER_IGNORED_HOSTS` | List of strings | `site.com,another.com` | Hostnames included in this variable are accessed, not attacked, and not reported against. |
| `DAST_BROWSER_INCLUDE_ONLY_RULES` | List of strings | `16.1,16.2,16.3` | Comma-separated list of check identifiers to use for the scan. |
| `DAST_BROWSER_LOG` | List of strings | `brows:debug,auth:debug` | A list of modules and their intended logging level for use in the console log. |
| `DAST_BROWSER_LOG_CHROMIUM_OUTPUT` | boolean | `true` | Set to `true` to log Chromium `STDOUT` and `STDERR`. |
| `DAST_BROWSER_MAX_ACTIONS` | number | `10000` | The maximum number of actions that the crawler performs. For example, selecting a link, or filling a form. |
| `DAST_BROWSER_MAX_DEPTH` | number | `10` | The maximum number of chained actions that the crawler takes. For example, `Click -> Form Fill -> Click` is a depth of three. |
| `DAST_BROWSER_MAX_RESPONSE_SIZE_MB` | number | `15` | The maximum size of a HTTP response body. Responses with bodies larger than this are blocked by the browser. Defaults to 10 MB. |
| `DAST_BROWSER_NAVIGATION_STABILITY_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `7s` | The maximum amount of time to wait for a browser to consider a page loaded and ready for analysis after a navigation completes. Defaults to `800ms`.|
| `DAST_BROWSER_NAVIGATION_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `15s` | The maximum amount of time to wait for a browser to navigate from one page to another. |
| `DAST_BROWSER_NUMBER_OF_BROWSERS` | number | `3` | The maximum number of concurrent browser instances to use. For shared runners on GitLab.com, we recommended a maximum of three. Private runners with more resources may benefit from a higher number, but are likely to produce little benefit after five to seven instances. |
| `DAST_BROWSER_PAGE_LOADING_SELECTOR` | selector | `css:#page-is-loading` | Selector that when is no longer visible on the page, indicates to the analyzer that the page has finished loading and the scan can continue. Cannot be used with `DAST_BROWSER_PAGE_READY_SELECTOR`. |
| `DAST_BROWSER_PAGE_READY_SELECTOR` | selector | `css:#page-is-ready` | Selector that when detected as visible on the page, indicates to the analyzer that the page has finished loading and the scan can continue. Cannot be used with `DAST_BROWSER_PAGE_LOADING_SELECTOR`. |
| `DAST_BROWSER_PASSIVE_CHECK_WORKERS` | int | `5` | Number of workers that passive scan in parallel. Recommend setting to the number of available CPUs. |
| `DAST_BROWSER_SCAN` | boolean | `true` | Required to be `true` to run a browser-based scan. |
| `DAST_BROWSER_SEARCH_ELEMENT_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `3s` | The maximum amount of time to allow the browser to search for new elements or user actions. |
| `DAST_BROWSER_STABILITY_TIMEOUT` | [Duration string](https://pkg.go.dev/time#ParseDuration) | `7s` | The maximum amount of time to wait for a browser to consider a page loaded and ready for analysis. |
| `DAST_EXCLUDE_RULES` | string | `10020,10026` | Set to a comma-separated list of ZAP Vulnerability Rule IDs to exclude them from running during the scan. Rule IDs are numbers and can be found from the DAST log or on the [ZAP project](https://www.zaproxy.org/docs/alerts/). |
| `DAST_EXCLUDE_URLS` | URLs | `https://example.com/.*/sign-out` | The URLs to skip during the authenticated scan; comma-separated. Regular expression syntax can be used to match multiple URLs. For example, `.*` matches an arbitrary character sequence. |
| `DAST_FF_ENABLE_BAS` | boolean | `true` | Set to `true` to [enable Breach and Attack Simulation](../breach_and_attack_simulation/index.md#extend-dynamic-application-security-testing-dast) during this DAST scan. |
| `DAST_FULL_SCAN_ENABLED` | boolean | `true` | Set to `true` to run both passive and active checks. Default: `false` |
| `DAST_PATHS` | string | `/page1.html,/category1/page3.html` | Set to a comma-separated list of URL paths relative to `DAST_WEBSITE` for DAST to scan. |
| `DAST_PATHS_FILE` | string | `/builds/project/urls.txt` | Set to a file path containing a list of URL paths relative to `DAST_WEBSITE` for DAST to scan. The file must be plain text with one path per line. |
| `DAST_PKCS12_CERTIFICATE_BASE64` | string | `ZGZkZ2p5NGd...` | The PKCS12 certificate used for sites that require Mutual TLS. Must be encoded as base64 text. |
| `DAST_PKCS12_PASSWORD` | string | `password` | The password of the certificate used in `DAST_PKCS12_CERTIFICATE_BASE64`. Create sensitive [custom CI/CI variables](../../../ci/variables/index.md#define-a-cicd-variable-in-the-ui) using the GitLab UI. |
| `DAST_REQUEST_HEADERS` | string | `Cache-control:no-cache` | Set to a comma-separated list of request header names and values. |
| `DAST_SKIP_TARGET_CHECK` | boolean | `true` | Set to `true` to prevent DAST from checking that the target is available before scanning. Default: `false`. |
| `DAST_TARGET_AVAILABILITY_TIMEOUT` | number | `60` | Time limit in seconds to wait for target availability. |
| `DAST_WEBSITE` | URL | `https://example.com` | The URL of the website to scan. |
| `SECURE_ANALYZERS_PREFIX` | URL | `registry.organization.com` | Set the Docker registry base address from which to download the analyzer. |
## Managing scope
Scope controls what URLs DAST follows when crawling the target application. Properly managed scope minimizes scan run time while ensuring only the target application is checked for vulnerabilities.
### Types of scope
There are three types of scope:
- in scope
- out of scope
- excluded from scope
#### In scope
DAST follows in-scope URLs and searches the DOM for subsequent actions to perform to continue the crawl.
Recorded in-scope HTTP messages are passively checked for vulnerabilities and used to build attacks when running a full scan.
#### Out of scope
DAST follows out-of-scope URLs for non-document content types such as image, stylesheet, font, script, or AJAX request.
[Authentication](#scope-works-differently-during-authentication) aside, DAST does not follow out-of-scope URLs for full page loads, such as when clicking a link to an external website.
Except for passive checks that search for information leaks, recorded HTTP messages for out-of-scope URLs are not checked for vulnerabilities.
#### Excluded from scope
DAST does not follow excluded-from-scope URLs. Except for passive checks that search for information leaks, recorded HTTP messages for excluded-from-scope URLs are not checked for vulnerabilities.
### Scope works differently during authentication
Many target applications have an authentication process that depends on external websites, such as when using an identity access management provider for single sign on (SSO).
To ensure that DAST can authenticate with these providers, DAST follows out-of-scope URLs for full page loads during authentication. DAST does not follow excluded-from-scope URLs.
### How DAST blocks HTTP requests
DAST instructs the browser to make the HTTP request as usual when blocking a request due to scope rules. The request is subsequently intercepted and rejected with the reason `BlockedByClient`.
This approach allows DAST to record the HTTP request while ensuring it never reaches the target server. Passive checks such as [200.1](checks/200.1.md) use these recorded requests to verify information sent to external hosts.
### How to configure scope
By default, URLs matching the host of the target application are considered in-scope. All other hosts are considered out-of-scope.
Scope is configured using the following variables:
- Use `DAST_BROWSER_ALLOWED_HOSTS` to add in-scope hosts.
- Use `DAST_BROWSER_IGNORED_HOSTS` to add to out-of-scope hosts.
- Use `DAST_BROWSER_EXCLUDED_HOSTS` to add to excluded-from-scope hosts.
- Use `DAST_EXCLUDE_URLS` to set specific URLs to be excluded-from-scope.
Rules:
- Excluding a host is given priority over ignoring a host, which is given priority over allowing a host.
- Configuring scope for a host does not configure scope for the subdomains of that host.
- Configuring scope for a host does not configure scope for all ports on that host.
The following could be a typical configuration:
```yaml
include:
- template: DAST.gitlab-ci.yml
dast:
variables:
DAST_WEBSITE: "https://my.site.com" # my.site.com URLs are considered in-scope by default
DAST_BROWSER_ALLOWED_HOSTS: "api.site.com:8443" # include the API as part of the scan
DAST_BROWSER_IGNORED_HOSTS: "analytics.site.com" # explicitly disregard analytics from the scan
DAST_BROWSER_EXCLUDED_HOSTS: "ads.site.com" # don't visit any URLs on the ads subdomain
DAST_EXCLUDE_URLS: "https://my.site.com/user/logout" # don't visit this URL
```
## Vulnerability detection
Vulnerability detection is gradually being migrated from the default Zed Attack Proxy (ZAP) solution
to the browser-based analyzer. For details of the vulnerability detection already migrated, see
[browser-based vulnerability checks](checks/index.md).
The crawler runs the target website in a browser with DAST/ZAP configured as the proxy server. This
ensures that all requests and responses made by the browser are passively scanned by DAST/ZAP. When
running a full scan, active vulnerability checks executed by DAST/ZAP do not use a browser. This
difference in how vulnerabilities are checked can cause issues that require certain features of the
target website to be disabled to ensure the scan works as intended.
For example, for a target website that contains forms with Anti-CSRF tokens, a passive scan works as
intended because the browser displays pages and forms as if a user is viewing the page. However,
active vulnerability checks that run in a full scan cannot submit forms containing Anti-CSRF tokens.
In such cases, we recommend you disable Anti-CSRF tokens when running a full scan.
## Managing scan time
It is expected that running the browser-based crawler results in better coverage for many web applications, when compared to the standard GitLab DAST solution.
This can come at a cost of increased scan time.
You can manage the trade-off between coverage and scan time with the following measures:
- Vertically scale the runner and use a higher number of browsers with the [variable](#available-cicd-variables) `DAST_BROWSER_NUMBER_OF_BROWSERS`. The default is `3`.
- Limit the number of actions executed by the browser with the [variable](#available-cicd-variables) `DAST_BROWSER_MAX_ACTIONS`. The default is `10,000`.
- Limit the page depth that the browser-based crawler checks coverage on with the [variable](#available-cicd-variables) `DAST_BROWSER_MAX_DEPTH`. The crawler uses a breadth-first search strategy, so pages with smaller depth are crawled first. The default is `10`.
- Limit the time taken to crawl the target application with the [variable](#available-cicd-variables) `DAST_BROWSER_CRAWL_TIMEOUT`. The default is `24h`. Scans continue with passive and active checks when the crawler times out.
- Build the crawl graph with the [variable](#available-cicd-variables) `DAST_BROWSER_CRAWL_GRAPH` to see what pages are being crawled.
- Prevent pages from being crawled using the [variable](#available-cicd-variables) `DAST_EXCLUDE_URLS`.
- Prevent elements being selected using the [variable](#available-cicd-variables) `DAST_BROWSER_EXCLUDED_ELEMENTS`. Use with caution, as defining this variable causes an extra lookup for each page crawled.
- If the target application has minimal or fast rendering, consider reducing the [variable](#available-cicd-variables) `DAST_BROWSER_DOM_READY_AFTER_TIMEOUT` to a smaller value. The default is `500ms`.
## Timeouts
Due to poor network conditions or heavy application load, the default timeouts may not be applicable to your application.
Browser-based scans offer the ability to adjust various timeouts to ensure it continues smoothly as it transitions from one page to the next. These values are configured using a [Duration string](https://pkg.go.dev/time#ParseDuration), which allow you to configure durations with a prefix: `m` for minutes, `s` for seconds, and `ms` for milliseconds.
Navigations, or the act of loading a new page, usually require the most amount of time because they are
loading multiple new resources such as JavaScript or CSS files. Depending on the size of these resources, or the speed at which they are returned, the default `DAST_BROWSER_NAVIGATION_TIMEOUT` may not be sufficient.
Stability timeouts, such as those configurable with `DAST_BROWSER_NAVIGATION_STABILITY_TIMEOUT`, `DAST_BROWSER_STABILITY_TIMEOUT`, and `DAST_BROWSER_ACTION_STABILITY_TIMEOUT` can also be configured. Stability timeouts determine when browser-based scans consider
a page fully loaded. Browser-based scans consider a page loaded when:
1. The [DOMContentLoaded](https://developer.mozilla.org/en-US/docs/Web/API/Window/DOMContentLoaded_event) event has fired.
1. There are no open or outstanding requests that are deemed important, such as JavaScript and CSS. Media files are usually deemed unimportant.
1. Depending on whether the browser executed a navigation, was forcibly transitioned, or action:
- There are no new Document Object Model (DOM) modification events after the `DAST_BROWSER_NAVIGATION_STABILITY_TIMEOUT`, `DAST_BROWSER_STABILITY_TIMEOUT`, or `DAST_BROWSER_ACTION_STABILITY_TIMEOUT` durations.
After these events have occurred, browser-based scans consider the page loaded and ready, and attempt the next action.
If your application experiences latency or returns many navigation failures, consider adjusting the timeout values such as in this example:
```yaml
include:
- template: DAST.gitlab-ci.yml
dast:
variables:
DAST_WEBSITE: "https://my.site.com"
DAST_BROWSER_NAVIGATION_TIMEOUT: "25s"
DAST_BROWSER_ACTION_TIMEOUT: "10s"
DAST_BROWSER_STABILITY_TIMEOUT: "15s"
DAST_BROWSER_NAVIGATION_STABILITY_TIMEOUT: "15s"
DAST_BROWSER_ACTION_STABILITY_TIMEOUT: "3s"
```
NOTE:
Adjusting these values may impact scan time because they adjust how long each browser waits for various activities to complete.
## Troubleshooting
See [troubleshooting](browser_based_troubleshooting.md) for more information.
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