Vodafail

README.md

Vodafail

This will become a short tutorial on how to achieve higher bandwidth on a residential (german) Vodafone DOCSIS internet connection.

A flaw in Vodafone's modem activation process allows for simultanous operation of two modems on one contract:

• Vodafone-owned CPE (e.g. "Vodafone Station")
• Customer CPE (TC4400, Fritz?!Box 6660, etc.)

On a low-loaded DOCSIS 3.1 segment, I am able to achieve 1900 MBit/s download and 95 MBits/ upload bitrate by bundling both modems using MPTCP

Additionally uplinks (5G, (V/A/S/X/WTF)DSL) can be added to the MPTCP setup for better performance and availability.

TODO

• automate modem activation (see modem.sh)
• document VPN+MPTCP setup

modem.sh

#!/bin/bash

# A flaw in Vodafone's DOCSIS modem activation process allows 
# for simultanous operation of two modems (their own CPE + your own).
#
# Combine two modems with MPTCP and get twice the datarate!
#
# Sometimes the customer's modem get's kicked out. This script
# helps with keeping it online by reactivating it.

# This script assumes a Fritz!Box Modem at 192.168.178.1 and
# the local system to have 192.168.178.2

CUSTOMER_ID="REDACTED"
ACTIVATION_CODE="REDACTED-XXXXX-XXXXX"
MAC="xx:xx:xx:xx:xx:xx" # Router WAN MAC

while true; do
	dig +short -b 192.168.178.2 fluep.ke @192.168.178.1 | grep -q "kabelmodem"
	if [ $? != 0 ]; then
		echo "Modem needs no activation"
		sleep 3
		continue
	fi
	
	echo "Modem needs activation"
	
	IP=$(dig +short -b 192.168.178.2 kabelmodemaktivieren.vodafone.de @192.168.178.1)
	curl --interface 192.168.178.2 --resolve kabelmodemaktivieren.vodafone.de:443:$IP -i -s -k -X $'POST' \
	    -H $'Host: kabelmodemaktivieren.vodafone.de' -H $'Content-Length: 63' -H $'Sec-Ch-Ua: \"Not?A_Brand\";v=\"8\", \"Chromium\";v=\"108\"' -H $'Accept: application/json, text/plain, */*' -H $'Content-Type: application/json' -H $'Sec-Ch-Ua-Mobile: ?0' -H $'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.99 Safari/537.36' -H $'Sec-Ch-Ua-Platform: \"Linux\"' -H $'Origin: https://kabelmodemaktivieren.vodafone.de' -H $'Sec-Fetch-Site: same-origin' -H $'Sec-Fetch-Mode: cors' -H $'Sec-Fetch-Dest: empty' -H $'Referer: https://kabelmodemaktivieren.vodafone.de/login' -H $'Accept-Language: en-US,en;q=0.9' -H $'Connection: close' \
	    --data-binary "{\"customerId\":\"$CUSTOMER_ID\",\"activationCode\":\"$ACTIVATION_CODE\"}" \
	    $'https://kabelmodemaktivieren.vodafone.de/api/v1/sessions/authCode' -c /tmp/cookies.txt
	
	curl --interface 192.168.178.2 --resolve kabelmodemaktivieren.vodafone.de:443:$IP -i -s -k -X $'POST' \
	    -H $'Host: kabelmodemaktivieren.vodafone.de' -H $'Content-Length: 0' -H $'Sec-Ch-Ua: \"Not?A_Brand\";v=\"8\", \"Chromium\";v=\"108\"' -H $'Accept: application/json, text/plain, */*' -H $'Sec-Ch-Ua-Mobile: ?0' -H $'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.99 Safari/537.36' -H $'Sec-Ch-Ua-Platform: \"Linux\"' -H $'Origin: https://kabelmodemaktivieren.vodafone.de' -H $'Sec-Fetch-Site: same-origin' -H $'Sec-Fetch-Mode: cors' -H $'Sec-Fetch-Dest: empty' -H $'Referer: https://kabelmodemaktivieren.vodafone.de/v1/activation' -H $'Accept-Language: en-US,en;q=0.9' -H $'Connection: close' -b /tmp/cookies.txt \
	    "https://kabelmodemaktivieren.vodafone.de/api/v1/devices/$MAC"

	# Reconnect the Fritz?!Box via UPnP
	curl -i "http://192.168.178.1:49000/igdupnp/control/WANIPConn1" \
		-H "Content-Type: text/xml" \
		-H "soapaction: urn:schemas-upnp-org:service:WANIPConnection:1#ForceTermination" \
		-H "charset: utf8" \
		-d '<?xml version="1.0" encoding="utf-8"?><s:Envelope s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Body><u:ForceTermination xmlns:u="urn:schemas-upnp-org:service:WANIPConnection:1"></u:ForceTermination></s:Body></s:Envelope>'

	sleep 30
done