diff --git a/fritzbox_helper.py b/fritzbox_helper.py
new file mode 100755
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--- /dev/null
+++ b/fritzbox_helper.py
@@ -0,0 +1,137 @@
+#!/usr/bin/env python
+"""
+  fritzbox_helper - A munin plugin for Linux to monitor AVM Fritzbox
+  Copyright (C) 2015 Christian Stade-Schuldt
+  Author: Christian Stade-Schuldt
+  Like Munin, this plugin is licensed under the GNU GPL v2 license
+  http://www.opensource.org/licenses/GPL-2.0
+  Add the following section to your munin-node's plugin configuration:
+
+  [fritzbox_*]
+  env.fritzbox_ip [ip address of the fritzbox]
+  env.fritzbox_password [fritzbox password]
+  
+  This plugin supports the following munin configuration parameters:
+  #%# family=auto contrib
+  #%# capabilities=autoconf
+
+  The initial script was inspired by
+  https://www.linux-tips-and-tricks.de/en/programming/389-read-data-from-a-fritzbox-7390-with-python-and-bash
+  framp at linux-tips-and-tricks dot de
+"""
+
+import hashlib
+import sys
+
+import requests
+from lxml import etree
+
+USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:10.0) Gecko/20100101 Firefox/10.0"
+
+
+def get_session_id(server, password, port=80):
+    """Obtains the session id after login into the Fritzbox.
+    See https://avm.de/fileadmin/user_upload/Global/Service/Schnittstellen/AVM_Technical_Note_-_Session_ID.pdf
+    for deteils (in German).
+
+    :param server: the ip address of the Fritzbox
+    :param password: the password to log into the Fritzbox webinterface
+    :param port: the port the Fritzbox webserver runs on
+    :return: the session id
+    """
+
+    headers = {"Accept": "application/xml",
+               "Content-Type": "text/plain",
+               "User-Agent": USER_AGENT}
+
+    url = 'http://{}:{}/login_sid.lua'.format(server, port)
+    try:
+        r = requests.get(url, headers=headers)
+        r.raise_for_status()
+    except requests.exceptions.HTTPError as err:
+        print(err)
+        sys.exit(1)
+
+    root = etree.fromstring(r.content)
+    session_id = root.xpath('//SessionInfo/SID/text()')[0]
+    if session_id == "0000000000000000":
+        challenge = root.xpath('//SessionInfo/Challenge/text()')[0]
+        challenge_bf = ('{}-{}'.format(challenge, password)).encode('utf-16le')
+        m = hashlib.md5()
+        m.update(challenge_bf)
+        response_bf = '{}-{}'.format(challenge, m.hexdigest().lower())
+    else:
+        return session_id
+
+    headers = {"Accept": "text/html,application/xhtml+xml,application/xml",
+               "Content-Type": "application/x-www-form-urlencoded",
+               "User-Agent": USER_AGENT}
+
+    url = 'http://{}:{}/login_sid.lua?&response={}'.format(server, port, response_bf)
+    try:
+        r = requests.get(url, headers=headers)
+        r.raise_for_status()
+    except requests.exceptions.HTTPError as err:
+        print(err)
+        sys.exit(1)
+
+    root = etree.fromstring(r.content)
+    session_id = root.xpath('//SessionInfo/SID/text()')[0]
+    if session_id == "0000000000000000":
+        print("ERROR - No SID received because of invalid password")
+        sys.exit(0)
+    return session_id
+
+
+def get_page_content(server, session_id, page, port=80):
+    """Fetches a page from the Fritzbox and returns its content
+
+    :param server: the ip address of the Fritzbox
+    :param session_id: a valid session id
+    :param page: the page you are regquesting
+    :param port: the port the Fritzbox webserver runs on
+    :return: the content of the page
+    """
+
+    headers = {"Accept": "application/xml",
+               "Content-Type": "text/plain",
+               "User-Agent": USER_AGENT}
+
+    url = 'http://{}:{}/{}?sid={}'.format(server, port, page, session_id)
+    try:
+        r = requests.get(url, headers=headers)
+        r.raise_for_status()
+    except requests.exceptions.HTTPError as err:
+        print(err)
+        sys.exit(1)
+    return r.content
+
+
+def get_xhr_content(server, session_id, page, port=80):
+    """Fetches the xhr content from the Fritzbox and returns its content
+
+    :param server: the ip address of the Fritzbox
+    :param session_id: a valid session id
+    :param page: the page you are regquesting
+    :param port: the port the Fritzbox webserver runs on
+    :return: the content of the page
+    """
+
+    headers = {"Accept": "application/xml",
+               "Content-Type": "application/x-www-form-urlencoded",
+               "User-Agent": USER_AGENT}
+
+    url = 'http://{}:{}/data.lua'.format(server, port)
+    data = {"xhr": 1,
+            "sid": session_id,
+            "lang": "en",
+            "page": page,
+            "xhrId": "all",
+            "no_sidrenew": ""
+            }
+    try:
+        r = requests.post(url, data=data, headers=headers)
+    except requests.exceptions.HTTPError as err:
+        print(err)
+        sys.exit(1)
+    return r.content