diff --git a/src/middleware/proxy-middleware.js b/src/middleware/proxy-middleware.js
index 0a145e182..63e66327a 100644
--- a/src/middleware/proxy-middleware.js
+++ b/src/middleware/proxy-middleware.js
@@ -2,7 +2,6 @@
 // MIT license
 // contains https://github.com/gonzalocasas/node-proxy-middleware/pull/59
 
-var os = require('os');
 var http = require('http');
 var https = require('https');
 var owns = {}.hasOwnProperty;
@@ -17,8 +16,6 @@ module.exports = function proxyMiddleware(options) {
   var request = httpLib.request;
 
   options = options || {};
-  options.hostname = options.hostname;
-  options.port = options.port;
   options.pathname = options.pathname || '/';
 
   return function (req, resp, next) {
@@ -50,8 +47,6 @@ module.exports = function proxyMiddleware(options) {
     opts.method = req.method;
     opts.headers = options.headers ? merge(req.headers, options.headers) : req.headers;
 
-    applyViaHeader(req.headers, opts, opts.headers);
-
     if (!options.preserveHost) {
       // Forwarding the host breaks dotcloud
       delete opts.headers.host;
@@ -66,8 +61,6 @@ module.exports = function proxyMiddleware(options) {
         // absoulte path
         headers.location = location.replace(options.href, slashJoin('/', slashJoin((options.route || ''), '')));
       }
-      applyViaHeader(myRes.headers, opts, myRes.headers);
-      rewriteCookieHosts(myRes.headers, opts, myRes.headers, req);
       resp.writeHead(myRes.statusCode, myRes.headers);
       myRes.on('error', function (err) {
         next(err);
@@ -88,43 +81,6 @@ module.exports = function proxyMiddleware(options) {
   };
 };
 
-function applyViaHeader(existingHeaders, opts, applyTo) {
-  if (!opts.via) return;
-
-  var viaName = (true === opts.via) ?  os.hostname() : opts.via;
-  var viaHeader = '1.1 ' + viaName;
-  if(existingHeaders.via) {
-    viaHeader = existingHeaders.via + ', ' + viaHeader;
-  }
-
-  applyTo.via = viaHeader;
-}
-
-function rewriteCookieHosts(existingHeaders, opts, applyTo, req) {
-  if (!opts.cookieRewrite || !owns.call(existingHeaders, 'set-cookie')) {
-    return;
-  }
-
-  var existingCookies = existingHeaders['set-cookie'],
-      rewrittenCookies = [],
-      rewriteHostname = (true === opts.cookieRewrite) ? os.hostname() : opts.cookieRewrite;
-
-  if (!Array.isArray(existingCookies)) {
-    existingCookies = [ existingCookies ];
-  }
-
-  for (var i = 0; i < existingCookies.length; i++) {
-    var rewrittenCookie = existingCookies[i].replace(/(Domain)=[a-z\.-_]*?(;|$)/gi, '$1=' + rewriteHostname + '$2');
-
-    if (!req.connection.encrypted) {
-      rewrittenCookie = rewrittenCookie.replace(/;\s*?(Secure)/i, '');
-    }
-    rewrittenCookies.push(rewrittenCookie);
-  }
-
-  applyTo['set-cookie'] = rewrittenCookies;
-}
-
 function slashJoin(p1, p2) {
   var trailing_slash = false;
 
@@ -146,4 +102,3 @@ function merge(src1, src2) {
     extend(merged, src2);
     return merged;
 }
-