Configuring Virtual Private Networking (VPN) Configure OpenVPN
Digi TransPort® Routers User Guide
527
Configure OpenVPN
You can use OpenVPN to connect to the router for secure management and access services on the
LAN side of the TransPort router, such as corporate messaging services, file servers and print servers
for example. OpenVPN is a full-featured SSL VPN which implements OSI layer 2 or 3 secure network
extension using the industry standard SSL/TLS protocol, supports flexible client authentication
methods based on certificates, smart cards, and/or username/password credentials, and allows user
or group-specific access control policies using firewall rules applied to the VPN virtual interface.
OpenVPN is not a web application proxy and does not operate through a web browser.
You can configure a Digi TransPort as an OpenVPN server, shown above, or as an OpenVPN client,
connecting to an OpenVPN server.
On TransPort firmware, OpenVPN has been implemented as an interface. That means when an
OpenVPN tunnel connects, an interface is added to the routing table. Static routes can be configured
to point to an OpenVPN instance, and additionally, OpenVPN may learn routes from the tunnel peer
and add these routes to the routing table for the duration of the OpenVPN tunnel. As each tunnel
appears just like an interface, support for features like the firewall, NAT, IGMP, etc are the same as for
other interfaces like PPP and ETH.
Additional information on OpenVPNconfiguration
See these application notes for further details and steps on setting up your router as an OpenVPN
server:
n Application Note 46: Configuring a TransPort WR as an OpenVPN server for Windows OpenVPN
clients
n Application Note 47: Configuring a Windows OpenVPN server and a TransPort WR as an
OpenVPN client
n Application Note 76: How to configure an Ubuntu OpenVPN server and a Digi TransPort WR as
an OpenVPN client
n Quick Note 64: How to Troubleshoot OpenVPN On TransPort WR Routers