NetComm Vodafone MachineLink 3G User manual

Vodafone MachineLink 3G
PPTP Configuration Guide

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Vodafone MachineLink 3G – PPTP Configuration Guide
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Copyright
Copyright© 2013 NetComm Wireless Limited. All rights reserved.
Copyright© 2013 Vodafone Group Plc. All rights reserved.
The information contained herein is proprietary to NetComm Wireless and Vodafone. No part of this document may be translated, transcribed,
reproduced, in any form, or by any means without prior written consent of NetComm Wireless and Vodafone.
Please note: This document is subject to change without notice.
DOCUMENT VERSION DATE
Initial document release March 2013
Table 1 - Document Revision History
Note: Before performing the instructions in this guide, please ensure that you have the latest firmware version installed on your router.
Visit http://vodafone.netcommwireless.com to download the latest firmware.
Note: The functions described in this document require that the router is assigned with a publicly routable IP address. Please ensure that
your mobile carrier has provided you with a publicly routable IP address before performing the instructions in this document.

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Vodafone MachineLink 3G - PPTP
Configuration Guide
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Table of contents
Introduction............................................................................................................................................................................................................................................................................................... 4
PPTP Overview..........................................................................................................................................................................................................................................................................................4

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Vodafone MachineLink 3G – PPTP Configuration Guide
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Introduction
A VPN (Virtual private network) is a secure connection between two or more endpoints. It can also be seen as an extension to a private network.
There are two key types of VPN scenarios:
Site-to-site VPN
Remote Access VPN.
In a site to site VPN, data is encrypted from one VPN gateway to the other, providing a secure link between two sites over a third party insecure
network like the Internet.
In a remote access VPN scenario, a secure connection would be made from an individual computer to a VPN gateway. This would enable a user to
access their e-mail, files and other resources at work from wherever they may be, providing they have an Internet connection.
The Vodafone MachineLink 3G Router supports three types of Virtual Private Network (VPN) technologies:
Point-to-Point Tunnelling Protocol (PPTP) VPN
Internet Protocol Security (IPsec) VPN
OpenVPN.
PPTP is a popular choice when selecting a VPN type, mainly due to the large number of clients supporting it. Windows® Servers may be configured
to function as PPTP VPN Servers. Owing to its popularity, the Vodafone MachineLink 3G Router has a PPTP client built-in enabling you to utilise this
method of securing your data connection.
This document describes how to configure the PPTP client on the Vodafone MachineLink 3G M2M IP Router.
PPTP Overview
The following diagram illustrates a typical PPTP usage scenario:
Figure 1 - PPTP Diagram

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Vodafone MachineLink 3G - PPTP
Configuration Guide
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Configuring the PPTP Client
1. Log in to your MachineLink 3G Router using the “root” account.
2. Click on Networking, then click on the VPN menu on the left, then the PPTP client item.The PPTP VPN List is displayed.
Figure 2 - PPTP Client List
3. Click the +Add button to begin configuring a new PPTP client profile. The PPTP client edit screen is displayed.
Figure 3 - VPN PPTP client edit
4. Click the Enable PPTP client toggle key to switch it to the ON position.
5. In the Profile name list, enter a profile name for the tunnel. This may be anything you like and is used to identify the tunnel on the
router.
6. Use the Username and Password fields to enter the username and password for the PPTP account.
7. In the PPTP server address field, enter the IP address of the PPTP server.

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Vodafone MachineLink 3G – PPTP Configuration Guide
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8. From the Authentication type drop down list, select the Authentication type used on the server. If you do not know the authentication
method used, select any and the router will attempt to determine the correct authentication type for you. There are 5 authentication
types you can choose from:
a) CHAP – uses a three way handshake to authenticate the identity of a client.
b) MS-CHAP v1 – This is the Microsoft implementation of the Challenge Handshake Authentication Protocol for which support was
dropped in Windows® Vista.
c) MS-CHAP v2 - This is the Microsoft implementation of the Challenge Handshake Authentication Protocol which was introduced in
Windows® NT 4.0 and is still supported today.
d) PAP – The Password Authentication Protocol uses a password as a means of authentication and as such, is commonly supported.
PAP is not recommended because it transmits passwords unencrypted and is not secure.
e) EAP – Extensible Authentication Protocol. An Authentication protocol commonly used in wireless networks.
9. The metric value helps the router to prioritise routes and must be a number between 0 and 65535. The default value is 30 and should
not be modified unless you are aware of the effect your changes will have.
10. The Use peer DNS option allows you to select whether the remote clients will use the Domain Name Server of the PPTP server. Click
the toggle key to set this to ON or OFF as required.
11. NAT masquerading allows the router to modify the packets sent and received to inform remote computers on the internet that
packets originating from a machine behind the router actually originated from the WAN IP address of the router’s internal NAT IP
address. Click the toggle key to switch this to the ON position if you want to use this feature.
12. Set default route to PPTP sets all outbound data packets to go out through the PPTP tunnel. Click the toggle key to switch this to the
ON position if you want to use this feature.
13. The Verbose logging option sets the router to output detailed logs regarding the PPTP connection in the System Log section of the
router interface.
14. The Reconnect delay is the time in seconds that the router will wait before attempting to connect to the PPTP server in the event that
the connection is broken. The minimum time to wait is 30 seconds so as to not flood the PPTP server with connection requests, while
the maximum time to wait is 65335 seconds.
15. The Reconnect retries is the number of connection attempts that the router will make in the event that the PPTP connection goes
down. If set to 0, the router will retry the connection indefinitely, otherwise the maximum number of times to retry cannot be greater
than 65335.
16. Click the Save button to save the changes. The VPN will attempt to connect after your click Save. Click the Status button at the top left
of the interface to return to the status window and monitor the VPN’s connection state.

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Vodafone MachineLink 3G - PPTP
Configuration Guide
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Verifying the PPTP Connection Status
Perform a ping test in both directions. On the server, open a command prompt and ping the client IP address (shown under P-t-P Local). To test
the tunnel in the other direction, telnet to the client router (username: root password: admin) and ping the P-t-P Remote IP address. See the
screenshots below for an example.
Figure 4 – PPTP connection verification

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Vodafone MachineLink 3G – PPTP Configuration Guide
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PPTP Configuration Example
Figure 5 – PPTP Client configuration example