diff --git a/engine/webserverflask.py b/engine/webserverflask.py
index 14a6c08..a8c5e26 100644
--- a/engine/webserverflask.py
+++ b/engine/webserverflask.py
@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-"""Webserver"""
+"""Webserver
+
+# get ip of visitors https://stackoverflow.com/questions/3759981/get-ip-address-of-visitors
+"""
 
 import os
 import sys
@@ -14,13 +17,28 @@
 
 import subprocess
 import re
+import argparse
+
+from flask import request
+from flask import jsonify
+
 from engine.searcher import search_term, Db, Header
 
+# Open Access mode
+try:
+    from engine.open_access import OPEN_ACCESS  # inside this file OPEN_ACCESS = ['work-fenzymes.html']
+except ImportError:
+    OPEN_ACCESS = []
+
+
 app = Flask(__name__, static_url_path='')
 
 @app.route('/edit/<note_title>')
 def edit(note_title):
     """Open a note with your edit"""
+    if request.remote_addr not in ['127.0.0.1', '0.0.0.0']:
+        return 'Hmm...'
+
     os.system('open ' + PATH_TO_MD + ' ' + note_title)
     return 'edit note: %s' % note_title
 
@@ -37,17 +55,20 @@ def edit_header(note_title, note_header):
     Open a note with your edit
 
     http://stackoverflow.com/questions/3139970/open-a-file-at-line-with-filenameline-syntax
-    
+
     ..warning: if two headers found there will be a problem ;-)
     """
     #grep -n 'May #2' *.md
+    if request.remote_addr not in ['127.0.0.1', '0.0.0.0']:
+        return 'Hmm...'
+
     cmd = "cd " + PATH_TO_MD + " && /usr/bin/grep -n '" + note_header + "' " + note_title + ".md"
     print 'edit_header::cmd:', cmd
     out = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True).stdout.read()
     print 'edit_header::out:', out
     note_line = out.split(':')[0]
     os.system('emacsclient +' + note_line + ' ' + PATH_TO_MD + '/' + note_title + '.md &')
-    
+
     return redirect('/view/' + note_title + '.md#' + note_header.lstrip('#').strip().replace(' ', '-'))
 
 @app.route('/js/<path:path>')
@@ -69,6 +90,11 @@ def send_img(path):
 @app.route('/view/<note_title>')
 def view(note_title):
     """Open a note with your edit"""
+    print(note_title)
+    if request.remote_addr not in ['127.0.0.1', '0.0.0.0']:
+        if note_title not in OPEN_ACCESS:
+            return 'Hmm...'
+
     head = open(PATH_TO_TEMPLATE_HTML).read()
     head = head.replace('{{ url_index }}', PATH_TO_HTML + '/' + 'index.html')
     head = head.replace('href="img/', 'href="' + '/img/')
@@ -80,9 +106,12 @@ def view(note_title):
     html = open(PATH_TO_HTML + os.sep + note_title.replace('.md', '.html')).read()
     #return head + html
     return html
-    
+
 @app.route('/search/<text>')
 def search(text):
+    if request.remote_addr not in ['127.0.0.1', '0.0.0.0']:
+        return 'Hmm...'
+
     results = search_term(text)
 
     head = open(PATH_TO_TEMPLATE_HTML).read()
@@ -93,16 +122,35 @@ def search(text):
     head = head.replace('="js/', '="' + '/js/')
 
     os.system('open file://' + PATH_TO_HTML + '_search_geekbook_.html')
-       
+
     # remove demo content
     head = re.sub(r'<!-- start of demo -->.*<!-- end of demo -->', r'', head, flags=re.M | re.DOTALL)
     return head + results
     #return send_from_directory('', 'file:///' + PATH_TO_HTML + '/geekbook-search.html')
     #return redirect(url_for('static', filename='file:///' + PATH_TO_HTML + '/geekbook-search.html'))
 
+
+def get_parser():
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
+
+    parser.add_argument('--public', default=False,
+                        action="store_true", help="be public")
+    parser.add_argument('--debug', default=False,
+                        action="store_true", help="debug mode")
+    parser.add_argument('--port', default=5000, type=int)
+    return parser
+
+
 #main
 if __name__ == "__main__":
-    app.run(debug=True)
-    # if you want your geekbook to be seen in the network uncomment this line, and comment the line above
-    # app.run(debug=True, host= '0.0.0.0')
-    # of course be vere careful with this. EVERYONE within network can read ALL your notes! (if they know your IP)
+    parser = get_parser()
+    args = parser.parse_args()
+
+    if args.public:
+        # if you want your geekbook to be seen in the network uncomment this line, and comment the line above
+        print('WARNING PUBLIC MODE')
+        app.run(debug=args.debug, host= '0.0.0.0', port=args.port)
+        # of course be very careful with this. EVERYONE within network can read ALL your notes! (if they know your IP)
+    else:
+        app.run(debug=args.debug, port=args.port)
diff --git a/geekbookapp.py b/geekbookapp.py
index 97807e3..1596446 100755
--- a/geekbookapp.py
+++ b/geekbookapp.py
@@ -211,7 +211,10 @@ def start(self):
 def start_flask(args):
     if not args.noflask and not args.debug and not args.update:
         logger.info("Start off flask!")
-        os.system('python ' + PATH + os.sep + 'geekbook/engine/webserverflask.py &')
+        if args.public:
+            os.system('python ' + PATH + os.sep + 'geekbook/engine/webserverflask.py --public &')
+        else:
+            os.system('python ' + PATH + os.sep + 'geekbook/engine/webserverflask.py --public &')
 
 
 def start_gitweb():
@@ -243,6 +246,7 @@ def get_parser():
                         help='updates all jupiter notebooks!', action='store_true')
     parser.add_argument('--noflask', help='dont run flask', action='store_true')
     parser.add_argument('--noupdatedb', help='dont update the db', action='store_true')
+    parser.add_argument('--public', help='run as public server, edit engine.open_access to configure', action='store_true')
     return parser