Draytek Vigor C410 Series User Manual page 250

II-4-1-5 OpenVPN
The OpenVPN protocol utilizes public keys, certificates, and usernames and passwords to
authenticate the client. Traffic is carried over secure channels built upon industry-standard SSL/TLS
encryption protocols.
With integrating of OpenVPN, Vigor router can help users to achieve more robust, reliable and
secure private connections for business needs.
OpenVPN offers a convenient way for users to build a VPN between the local end and the remote
end. There are two advantages of OpenVPN:
It can be operated on different systems such as Windows, Linux, and MacOS.

Based on the standard protocol of SSL encryption, OpenVPN can provide you with a scalable

client/server mode, permitting multi-client to connect to a single OpenVPN Server process
over a single TCP or UDP port.
In terms of credentials, the administrator can choose to let the router generate the certificates, or
import certificates issued by third-party certificate authorities (CAs). When the router generates the
certificates, it acts as the root CA to issue the trusted CA certificates. If, however, a certificate issued
by a third-party CA is used, both the CA's certificate and the issued certificate need to be imported
to the router in the Trusted CA Certificate and Local Certificate sections, respectively.
OpenVPN requires the use of certificates. Before establishing OpenVPN connection, general settings
for OpenVPN service shall be configured first.
Available settings are explained as follows:
Item
Enabled
UPD Enabled
TCP Enabled
Description
Switch the toggle to enable/disable the settings.
OpenVPN Server Setup
Switch the toggle to enable/disable the UDP protocol for OpenVPN
connections.
UDP Port - Enter the UDP port number.
Switch the toggle to enable/disable the TCP protocol for OpenVPN
connections.
TCP Port - Enter the TCP port number.
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