WhatWeb - 新一代网络扫描仪

项目说明

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WhatWeb - Next generation web scanner

De by Andrew Horton urbanad and Brendan Coles bcoles

Latest Release: v0.6.4. April 3, 2026

License: GPLv2

This product is subject to the terms detailed in the license agreement. For more information about WhatWeb visit

Wiki:

If you have any questions, comments or concerns regarding WhatWeb, please consult the documentation prior to contacting one of the de. Your feedback is always welcome.

Contents

* About WhatWeb
* Example Usage
* Usage
* Logging & Output
* Plugins
* Aggression
* Performance & Stability
* Optional Dependencies
* Writing Plugins
* Updates & Additional Information
* Release History
* Credits

About WhatWeb

WhatWeb identifies websites. Its goal is to answer the question, "What is that Website?". WhatWeb recognises web technologies including content management systems (CMS), blogging platforms, statistic/analytics packages, Ja libraries, web servers, and embedded devices. WhatWeb has over 1800 plugins, each to recognise something different. WhatWeb also identifies numbers, email addresses, account IDs, web 框架 modules, SQL errors, and more.

WhatWeb can be stealthy and fast, or thorough but slow. WhatWeb supports an aggression level to control the trade off between speed and reliability. When you visit a website in your browser, the transaction includes many hints of what web technologies are powering that website. Sometimes a single webpage visit contains enough information to identify a website but when it does not, WhatWeb can interrogate the website further. The default level of aggression, called 'stealthy', is the fastest and requires only one HTTP request of a website. This is suitable for scanning public websites. More aggressi were de for use in penetration tests.

Most WhatWeb plugins are thorough and recognise a range of cues from subtle to obvious. For example, most WordPress websites can be identified by the meta HTML tag, e.g. '<meta name="generator" content="WordPress 2.6.5">', but a minority of WordPress websites remove this identifying tag but this does not thwart WhatWeb. The WordPress WhatWeb plugin has over 15 tests, which include checking the favicon, default installation files, login pages, and checking for "/wp-content/" within relati.

Features

* Over 1800 plugins
* Control the trade off between speed/stealth and reliability
* Performance tuning. Control how many websites to scan concurrently with automatic output optimization.
* Multiple log formats: Brief (greppable), (human readable), XML, JSON, MagicTree, RubyObject, MongoDB, ElasticSearch, SQL.
* Proxy support including TOR
* Custom HTTP headers
* Basic HTTP authentication
* Control o redirection
* IP address ranges
* Fuzzy matching
* Result certainty awareness
* Custom plugins defined on the command line
* IDN (International Domain Name) support
* Dual-协议 scanning for simple hostnames (automatically tests both HTTP and HTTPS)

Example Usage

Using WhatWeb to scan reddit.com.

Usage

Logging & Output

The following types of logging are supported:
* --log-brief=FILE Brief, one-line, greppable format
* --log-=FILE
* --log-xml=FILE XML format. XSL stylesheet is provided
* --log-json=FILE JSON format
* --log-json-=FILE JSON format
* --log-magictree=FILE MagicTree XML format
* --log-object=FILE Ruby object inspection format
* --log-mongo-数据库 Name of the MongoDB 数据库
* --log-mongo-collection Name of the MongoDB collection. Default: whatweb
* --log-mongo-host MongoDB hostname or IP address. Default: 0.0.0.0
* --log-mongo-username MongoDB username. Default: nil
* --log-mongo-password MongoDB password. Default: nil
* --log-elastic-index Name of the index to store results. Default: whatweb
* --log-elastic-host Host:port of the elastic http interface. Default: 127.0.0.1:9200
* --log-errors=FILE Log errors. This is usually printed to the screen in red.

You can output to multiple logs simultaneously by specifying multiple command line logging options. Ad users who want SQL output should read the 源码 代码 to see unsupported features.

Plugins

Matches are made with:
* Text strings (case sensitive)
* Regular expressions
* Google Hack 数据库 queries (limited set of keywords)
* MD5 hashes
* URL recognition
* HTML tag patterns
* Custom ruby 代码 for passive and aggressi

To list the plugins supported:

$ ./whatweb -l

WhatWeb Plugin List

Plugin Name - Description
--------------------------------------------------------------------------------
1024-CMS - 1024 is one of a few CMS's leading the way with the implementation...
360-Web-Manager - 360-Web-Manager
3COM-NBX - 3COM NBX phone system. The NBX NetSet utility is a web interface i...
3dcart - 3dcart - The 3dcart Shopping Cart Software is a complete ecommerce s...
4D - 4D web application deployment 服务端
4images - 4images is a powerful web-based image gallery management system. Fe...
... (truncated)

Search Plugins

To view more detail about a plugin or search plugins for a keyword:

$ ./whatweb -I phpBB

WhatWeb Detailed Plugin List
Searching for phpBB
================================================================================
Plugin: phpBB
--------------------------------------------------------------------------------
Description: phpBB is a free forum
Website:

Author: Andrew Horton
: 0.3

Features: [Yes] Pattern Matching (7)
[Yes] detection from pattern matching
[Yes] Function for passi
[Yes] Function for aggressi
[Yes] Google Dorks (1)

Google Dorks:
[1] "Powered by phpBB"
================================================================================

Plugin Selection

All plugins are loaded by default.

Plugins can be selected by directories, files or plugin names as a comma delimited list with the -p or --plugin command line option.

Each list item may have a modifier: + adds to the full set, - removes from the full set and no modifier o the defaults.

Examples

* --plugins +plugins-disabled,-foobar
* --plugins +/tmp/moo.rb
* --plugins foobar (only select foobar)
* -p title,md5,+./plugins-disabled/
* -p ./plugins-disabled,-md5

The --dorks <plugin name> command line option returns google dorks for the selected plugin. For example, --dorks wordpress returns "is proudly powered by WordPress"

The --grep, -g command line option searches the target page for the selected string and returns a match in a plugin called Grep if it is found.

Aggression

WhatWeb features several levels of aggression. By default the aggression level is set to 1 (stealthy) which sends a single HTTP GET request and also follows redirects.

--aggression, -a

1. Stealthy Makes one HTTP request per target. Also follows redirects.
2. Unused
3. Aggressive Can make a handful of HTTP requests per target. This triggers
aggressi for targets only when those plugins are
identified with a level 1 request first.
4. Hea a lot of HTTP requests per target. Aggressi from
all plugins are used for all URLs.

Level 3 aggressi will guess more URLs and perform actions that are potentially unsuitable without permission. WhatWeb currently does not support any intrusion/exploit le in plugins.

An example of the different results between level 1 and level 3:

A level 1, stealthy scan identifies that smartor.is-root.com/forum/ uses phpBB 2:

$ ./whatweb smartor.is-root.com/forum/
[200] PasswordField[password], HTTPSer/2.2.15], PoweredBy[phpBB], Apache[2.2.15], IP[88.198.177.36], phpBB[2], PHP[5.2.13], X-Powered-By[PHP/5.2.13], Cookies[phpbb2mysql_data,phpbb2mysql_sid], Title[Smartors Mods Forums - Reloaded], Country[GERMANY][DE]

A level 3, aggressive scan triggers additional tests in the phpBB plugin which identifies that the website uses phpBB 2.0.20 or higher:

$ ./whatweb -p plugins/phpbb.rb -a 3 smartor.is-root.com/forum/
[200] phpBB[2,>2.0.20]

Note the use of the -p argument to select only the phpBB plugin. It is ad, but not mandatory, to select a specific plugin when attempting to fingerprint software in aggressive mode. This approach is far more stealthy as it will limit the number of requests.

WhatWeb has no caching so if you use aggressi on redirecting URLs you may fetch the same files multiple times.

Performance & Stability

WhatWeb features several options to increase performance and stability.

* --max-threads, -t Number of simultaneous threads. Default: 25.
* --open-timeout Time in seconds. Default: 15
* --read-timeout Time in seconds. Default: 30
* --wait=SECONDS Wait SECONDS between connections
This is useful when using a single thread.
* --output-sync Force immediate output flushing to screen and logs for
real-time monitoring (slower with high thread counts).
* --output-buffer-size=SIZE Set output buffer size for screen and log output.
0=unbuffered, default=auto based on thread count.

The --wait and --max-threads commands can be used to assist in IDS e.

Output Performance Optimization

WhatWeb automatically optimizes output performance for both screen output and log files based on thread count:

* Low thread counts (1-5):
- Sync: Enabled (immediate flushing)
- Buffer size: 1 (minimal buffering for real-time output)
- Use case: Interacti, real-time monitoring

* Medium thread counts (6-50):
- Sync: Disabled (async I/O)
- Buffer size: 10 (small buffer for balanced performance)
- Use case: Standard batch scanning including default (25 threads)

* High thread counts (51+):
- Sync: Disabled (async I/O)
- Buffer size: 25 (larger buffer to minimize I/O contention)
- Use case: High- scanning, large target lists (100+ threads)

You can o these defaults for both screen output and log files:

These optimizations apply to all output formats including brief, , XML, JSON, and other log formats.

#### Technical Details

Output Sync Behavior:

Enabled: Each output line is immediately flushed to disk/screen (slower but real-time)

Disabled: Output is buffered in memory before writing (faster but delayed)

Buffer Size Impact:

Size 1: Minimal buffering, nearly immediate output

Size 10: Small buffer holds ~10 results before writing

Size 25+: Larger buffer reduces I/O system calls for better performance

Size 0: Completely unbuffered (equi to sync enabled)

Profiling Support

Enable performance profiling to identify bottlenecks:

*Note: Profiling requires the ruby-prof gem: gem install ruby-prof*

Changing the user-agent using the -U or --user-agent command line option will avoid the Snort IDS rule for WhatWeb.

If you are scanning ranges of IP addresses, it is much more efficient to use a port scanner like massscan to disco have port 80 open before scanning with WhatWeb.

Character set detection, with the Charset plugin dramatically decreases performance by requiring more CPU. This is required by JSON and MongoDB logging.

Optional Dependencies

WhatWeb supports optional dependencies for MongoDB logging and character set detection.

Optional dependencies is why the Gemfile is split into groups and WhatWeb does not come with a Gemfile.lock. Should you want a Gemfile.lock, it will be created when you run bundle install.

You can install them using Bundler groups:

MongoDB Support

To enable MongoDB logging:

Character Set Detection

To enable character set detection (required for JSON and MongoDB logging):

All Optional Dependencies

To install all optional dependencies at once:

Note: Character set detection dramatically decreases performance by requiring more CPU. Only enable it if you need it.

Writing Plugins

Plugins are easy to write. Start by going through the plugin tutorials in the *my-plugins/* folder.

* Plugin Tutorials.

An o of the plugin tutorials is here. plugin-tutorials.txt

After progressing through the tutorials read through the De section of the wiki.

* Sources for Plugin Writing
* How to Develop WhatWeb Plugins (not up to date)

Updates & Additional Information

The WhatWeb de build features regular updates.

* Check the de branches for unreleased updates.

Browse the wiki for more documentation and ad usage techniques.

* Wiki:

Release History

0.6.4 Released April 3, 2026

0.6.3 Released October 18, 2025

0.6.2 Released August 25, 2025

0.6.1 Released July 30th, 2025

0.5.4 Released December 14th, 2020

0.5.3 Released October 1st, 2020

0.5.2 Released June 9th, 2020

0.5.1 Released February 25th, 2020

0.5.0 Released June 9th, 2019

0.4.9 Released No 23rd, 2017

0.4.8-de release from 2012 to 2017)

0.4.7 Released April 5th, 2011

0.4.6 Released March 25th, 2011

0.4.5 Released August 17th, 2010

0.4.4 Released June 29th, 2010

0.4.3 Released May 24th, 2010

0.4.2 Released April 30th, 2010

0.4.1 Released April 28th, 2010

0.4 Released March 14th, 2010

0.3 Released at Kiwicon III (kiwicon.org), No 2nd, 2009

Credits

De

+ Andrew Horton ()
+ Brendan Coles ()

Contributors

Thank you to the following people who ha to WhatWeb.

+ Emilio Casbas
+ Louis Nyffenegger
+ Patrik Wallström ()
+ Caleb Anderson ()
+ Tonmoy Saikia
+ Aung Khant ()
+ Erik Inge Bolsø
+
+ Ste ()
+ Michal Ambroz
+ Gremwell
+ Sagar Prakash Junnarkar ()
+ GertBerger
+ Quintin Poirier
+ Eric Sesterhenn
+ dengjw ()
+ Pedro Worcel ()
+ Matthieu Keller ()
+ Peter (2pvdl)
+ Napz ()
+
+ Fabian Affolter ()
+ Andrew Sil ()
+ Andre Ricardo ()
+ nikosk
+ Patrick Thomas ()
+ Guillaume Delcaour ()
+ Sean ()
+ Matthieu Keller ()
+ Raul ()
+ Andrew Petro ()
+ Artem Taranyuk (@610)
+ Matti Paksula ()
+ Tim Smith ()
+ Sarthak Munshi ()
+
+ @Sli
+
+
+ -becker
+
+ Igor Rzegocki ()
+
+
+
+ Bha (@bha)
+ Chad Brigance ()
+ Daniel Maldonado
+ Elias Dorneles ()
+ Eugene Amirov
+ Gregory Boddin ()
+ Guillaume Delacour
+ Janosch Maier ()
+ Max Davitt ()
+ Naglis Jonaitis ()
+ Shuai Lin
+ Sigit Dewanto ()
+
+
+
+
+ @Sli
+
+ Mel ()
+
+
+
+ Weidsom Nascimento ()
+ Marcelo Gimenes ()
+
+ Baptiste Fontaine ()
+
+
+ Michael Ippolito ()
+
+
+ John de Kroon ()
+
+ Claude from Anthropic

It is difficult to keep track of all the people who ha to WhatWeb. If your name is missing then please let me know.

项目信息

开发语言：Ruby

Star 数：6873

技术要点

该项目属于黑客技术方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Next generation web scanner展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。