JS绕过代理、VPN获取真实IP及内网IP,逆向追踪的实现方法

Kathy ·

更新时间:2024-11-13

· 736 次阅读

Firefox 跟 Chrome支持WebRTC可以向STUN服务器请求，返回内外网IP，不同于XMLHttpRequest请求，STUN请求开发者工具当中看不到网络请求的。


//get the IP addresses associated with an account
function getIPs(callback)
{
  var ip_dups = {};
  //compatibility for firefox and chrome
  var RTCPeerConnection = window.RTCPeerConnection
    || window.mozRTCPeerConnection    || window.webkitRTCPeerConnection;
  var mediaConstraints = {
    optional: [{RtpDataChannels: true}]
  };
  //firefox already has a default stun server in about:config
  //  media.peerconnection.default_iceservers =
  //  [{"url": "stun:stun.services.mozilla.com"}]
  var servers = undefined;
  //add same stun server for chrome
  if(window.webkitRTCPeerConnection)
    servers = {iceServers: [{urls: "stun:stun.services.mozilla.com"}]};
  //construct a new RTCPeerConnection
  var pc = new RTCPeerConnection(servers, mediaConstraints);
  //listen for candidate events
  pc.onicecandidate = function(ice){
    //skip non-candidate events
    if(ice.candidate){
      //match just the IP address
      var ip_regex = /([0-9]{1,3}(\.[0-9]{1,3}){3})/
      var ip_addr = ip_regex.exec(ice.candidate.candidate)[1];
      //remove duplicates
      if(ip_dups[ip_addr] === undefined)
        callback(ip_addr);
      ip_dups[ip_addr] = true;
    }
  };
  //create a bogus data channel
  pc.createDataChannel("");
  //create an offer sdp
  pc.createOffer(function(result){
    //trigger the stun server request
    pc.setLocalDescription(result, function(){});
  }, function(){});}
//Test: Print the IP addresses into the console
getIPs(function(ip){console.log(ip);});

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内网ip ip 方法 vpn js 代理

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