Digi TransPort WR11 - Configure Point-To-Point Tunneling Protocol (PPTP)

Configuring Virtual Private Networking (VPN) Configure Point-to-Point Tunneling Protocol (PPTP)
Digi TransPort® Routers User Guide
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Configure Point-to-Point Tunneling Protocol (PPTP)
The Point-to-Point tunneling protocol (PPTP) is a common way of creating a VPN tunnel to a Microsoft
Windows™ server.
PPTP works by ending a regular PPP session to the peer encapsulated by the Generic Routing
Encapsulation (GRE) protocol. The router uses a second session on TCP port 1723 to initiate and
manage the GRE session. PPTP connections are authenticated with Microsoft MSCHAP-v2 or EAP-TLS.
VPN traffic is protected by MPPE encryption. PPTP does not work with GPRS/HSDPA mobile operators
that assign a private IP address and then apply NAT to the traffic before it leaves their network. This
because the server tries to build a tunnel back to the router on port 1723 but fails when the traffic is
blocked by the mobile operator’s firewall.
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1. Go to Configuration > Network > Virtual Private Networking (VPN) > PPTP > PPTP n.
2. Configure PPTP parameters:
Description
An identifier for the router.
Remote Host a.b.c.d
The IP address of the remote host, such as the device that will terminate the PPTP connection.
Use Interface x,y
The interface name and instance to use for the PPTP tunnel. Specifying these parameters
allow the router to raise the interface should it be disconnected. The interface options are:
n Auto
n PPP
n Ethernet