Home / ubuntu / Questions / 1293981
Accepted
01AutoMonkey
Asked: 2020-11-21 11:52:06 +0800 CST

Firefox/Chrome, how to whitelist localhost and wikipedia.org?

  • 772

On Firefox and Chrome, how do I allow the local network and Wikipedia (localhost, 192.168.1.*, *.wikipedia.org, etc) but block everything else? A whitelist essentially. I still however want other tools on the system to have complete access to the internet, e.g. git, wget, etc, so the solution must not affect them.

Essentially whitelist the internet on the browser level rather than at the system level.

networking firefox browser google-chrome localhost

2 Answers

  1. Best Answer

    For Chrome there is a command line parameter you can use:

    google-chrome --host-rules="MAP * 127.0.0.1, EXCLUDE wikipedia.org","MAP * 127.0.0.1, EXCLUDE *.wikipedia.org"

    This maps every domain to localhost excluding wikipedia.

    For Firefox create a file /usr/lib/firefox/distribution/policies.json with this content:

    { 
  "policies": {
    "WebsiteFilter": {
      "Block": ["<all_urls>"],
      "Exceptions": ["*://wikipedia.org/*","*://*.wikipedia.org/*","*://localhost/*"]
    }
  }
}

    You can find more information about the policies supported by firefox at https://github.com/mozilla/policy-templates

    • 1

  2. Another option would be to use a userscript (greasmonkey, tampermonkey) to whitelist the web.

    // ==UserScript==
// @name     White List
// @version  1
// @grant    none
// @run-at   document-start
// @match    *://*/*
// ==/UserScript==

var hostname = window.location.hostname;

var allowIPs = true;
var whiteList = [
  "localhost",
  "wikipedia.org",
  "askubuntu.com"
];

// https://stackoverflow.com/a/26445549/473368
var ip = allowIPs && /^(?!0)(?!.*\.$)((1?\d?\d|25[0-5]|2[0-4]\d)(\.|$)){4}$/.test(hostname);

var listed = false;
for (var x in whiteList) {
  if (hostname.indexOf(whiteList[x]) != -1) {
      listed = true;
      break;
  }
}

// Not an IP? Not a whitelisted domain? Block it!
if (!ip && !listed) {
    document.documentElement.remove();
}
    • 0