├── DOCUMENTATION.md ├── LICENSE ├── README.md ├── html └── options.html ├── img └── icon128.png ├── js ├── background.js └── options.js └── manifest.json /DOCUMENTATION.md: -------------------------------------------------------------------------------- 1 | ## Documentation 2 | 3 | ### What do the settings mean and do? 4 | 5 | **WebRTC IP handling policy** 6 | 7 | Setting | Effect 8 | --- | --- 9 | `Use the default public interface only` | Send WebRTC traffic via the default public network adapter to the Internet. This will be the VPN adapter for system-VPN users. 10 | `Use the default public interface and private interface` | Same as above, except allow WebRTC traffic through the default private interface to your local network as well. 11 | `Disable non-proxied UDP (force proxy)` | Force the use of a proxy, and only allow WebRTC traffic over UDP proxies. This will effectively disable WebRTC communication for most users (depending on UDP proxy usage). 12 | 13 | --- 14 | ### I'm using a VPN or proxy, how do I prevent WebRTC leaks? 15 | 16 | Seriously, how do I do this? 17 | 18 | --- 19 | **I'm using a VPN that I installed software for, or configured in my operating system.** 20 | 21 | In your case, the default settings should prevent leaks. 22 | 23 | *WebRTC IP handling policy* is set to `Use the default public interface only` by default. 24 | 25 | --- 26 | **I'm using a VPN in the form of a browser extension.** 27 | 28 | These VPNs are considered proxies in Chrome. 29 | 30 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`. 31 | 32 | --- 33 | **I'm using the built-in VPN feature in Opera.** 34 | 35 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`. 36 | 37 | --- 38 | **I'm using a proxy.** 39 | 40 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`. 41 | 42 | --- 43 | **I'm not using a proxy or a VPN, but I want to conceal my local IP address.** 44 | 45 | The default settings will prevent local leaks. 46 | 47 | *WebRTC IP handling policy* is set to `Use the default public interface only` by default. 48 | 49 | --- 50 | **I don't want to prevent leaks.** 51 | 52 | Remove the extension. 53 | 54 | --- 55 | **I don't know what leaks are.** 56 | 57 | In this context leaks refer to the visibility of your personally identifiable IP address, even when using a VPN or proxy. For users with reasons to be concerned about privacy, such as Facebook users in China or anyone in the United States. 58 | 59 | --- 60 | ### How do I test for WebRTC leaks? 61 | 62 | GitHub developer [diafygi](https://github.com/diafygi) has developed an [easy-to-use test](https://diafygi.github.io/webrtc-ips). 63 | 64 | After you've set and applied a setting in WebRTC Leak Prevent, open or refresh diafygi's test to verify the effectiveness of the setting. 65 | 66 | A WebRTC leak is occuring if you're using a VPN or proxy and your ISP-provided public IP address is visible in the test. You can use one of many tools [like this](http://whatismyipaddress.com/ip/8.8.8.8) to check an IP address. 67 | 68 | --- 69 | ### What is 'Incognito protection'? 70 | 71 | 72 | 73 | By default, Chrome does not allow extensions to run in [Incognito mode](https://support.google.com/chrome/answer/95464). WebRTC Leak Prevent therefore cannot prevent WebRTC leaks in Incognito mode by default. 74 | 75 | To enable Incognito protection check 'Allow in incognito' under WebRTC Leak Prevent in the Chrome Extension menu. 76 | 77 | If you're okay with the extension not running in Incognito mode, or you explicitly don't want it to, you can ignore the warning message. 78 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright 2025 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## WebRTC Leak Prevent 2 | **Version 2.0.0 | May 12 2025** 3 | 4 | WebRTC Leak Prevent provides user control over WebRTC privacy settings in Chromium that have no native GUI. The intended use of the extension is to prevent [WebRTC leaks](https://diafygi.github.io/webrtc-ips/). 5 | 6 | The only required permissions are 'privacy' and 'storage'. 7 | 8 | #### How it works 9 | 10 | In **Chromium version 48+**, the extension provides user control over `webRTCIPHandlingPolicy`, defaulting to `default_public_interface_only`. 11 | 12 | #### Download 13 | 14 | [Chrome Web Store](https://chrome.google.com/webstore/detail/webrtc-leak-prevent/eiadekoaikejlgdbkbdfeijglgfdalml) 15 | 16 | --- 17 | 18 | #### Privacy 19 | 20 | WebRTC Leak Prevent does not collect any user data. 21 | 22 | The extension is hosted entirely on GitHub and the Chrome Web Store. These services may independently collect user data. 23 | 24 | #### License 25 | 26 | Copyright 2025 27 | 28 | Licensed under the Apache License, Version 2.0 (the "License"); 29 | you may not use this file except in compliance with the License. 30 | You may obtain a copy of the License at 31 | 32 | https://www.apache.org/licenses/LICENSE-2.0 33 | 34 | Unless required by applicable law or agreed to in writing, software 35 | distributed under the License is distributed on an "AS IS" BASIS, 36 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 37 | See the License for the specific language governing permissions and 38 | limitations under the License. 39 | -------------------------------------------------------------------------------- /html/options.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | WebRTC Leak Prevent 5 | 17 | 18 | 19 |

WebRTC Leak Prevention Options

20 | 21 |
22 |

23 |
24 | 29 |

30 | 31 |

32 | 33 | What do these options mean? 34 | 35 |

36 |
37 | 38 |
39 | Incognito protection: 40 |

Enabled

41 |

42 | Not enabled. 43 | 44 | Learn more. 45 | 46 |

47 |
48 | 49 |

50 | GitHub source 51 |

52 | 53 | 54 | 55 | 56 | -------------------------------------------------------------------------------- /img/icon128.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/a449707101729771095/WebRTC-Leak-Prevent/35312e08a122041ec8ecb749ecc8cc91f984cec2/img/icon128.png -------------------------------------------------------------------------------- /js/background.js: -------------------------------------------------------------------------------- 1 | chrome.runtime.onInstalled.addListener(() => { 2 | // Open the options page upon install 3 | chrome.runtime.openOptionsPage(); 4 | 5 | // Set default WebRTC handling policy if not already set 6 | chrome.storage.local.get("rtcIPHandling", (items) => { 7 | if (items.rtcIPHandling === undefined) { 8 | chrome.storage.local.set({ rtcIPHandling: "default_public_interface_only" }, () => { 9 | chrome.privacy.network.webRTCIPHandlingPolicy.set({ 10 | value: "default_public_interface_only" 11 | }); 12 | }); 13 | } 14 | }); 15 | }); 16 | 17 | chrome.action.onClicked.addListener(() => { 18 | chrome.runtime.openOptionsPage(); 19 | }) 20 | -------------------------------------------------------------------------------- /js/options.js: -------------------------------------------------------------------------------- 1 | /* Check if extension is allowed in Incognito mode */ 2 | function incognitoAllowedCheck() { 3 | chrome.extension.isAllowedIncognitoAccess((state) => { 4 | const incognitoAllowed = document.getElementById('incognitoAllowed'); 5 | const incognitoDisallowed = document.getElementById('incognitoDisallowed'); 6 | 7 | if (state) { 8 | incognitoDisallowed.style.display = 'none'; 9 | } else { 10 | incognitoAllowed.style.display = 'none'; 11 | } 12 | }); 13 | } 14 | 15 | /* Show main content and check incognito status */ 16 | function displayContent() { 17 | document.getElementById('content').style.display = 'block'; 18 | incognitoAllowedCheck(); 19 | } 20 | 21 | /* Save option and apply WebRTC policy */ 22 | function saveOptions() { 23 | const policy = document.getElementById('policy').value; 24 | 25 | chrome.storage.local.set({ rtcIPHandling: policy }, () => { 26 | chrome.privacy.network.webRTCIPHandlingPolicy.set({ value: policy }); 27 | }); 28 | } 29 | 30 | /* Load stored option into UI */ 31 | function restoreOptions() { 32 | chrome.storage.local.get({ rtcIPHandling: 'default_public_interface_only' }, (items) => { 33 | document.getElementById('policy').value = items.rtcIPHandling; 34 | }); 35 | } 36 | 37 | /* Event listeners */ 38 | document.addEventListener('DOMContentLoaded', () => { 39 | displayContent(); 40 | restoreOptions(); 41 | 42 | document.getElementById('policy').addEventListener('change', saveOptions); 43 | }); 44 | -------------------------------------------------------------------------------- /manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "manifest_version": 3, 3 | "name": "WebRTC Leak Prevent", 4 | "version": "2.0.0", 5 | "description": "Prevent WebRTC leaks using the official API.", 6 | "icons": { 7 | "128": "/img/icon128.png" 8 | }, 9 | "action": { 10 | "default_title": "Open options.", 11 | "default_popup": "/html/options.html" 12 | }, 13 | "options_ui": { 14 | "page": "/html/options.html", 15 | "open_in_tab": false 16 | }, 17 | "background": { 18 | "service_worker": "js/background.js" 19 | }, 20 | "permissions": ["storage", "privacy"], 21 | "host_permissions": [], 22 | "minimum_chrome_version": "88" 23 | } 24 | --------------------------------------------------------------------------------