| Traditional Deployment Methods | 67
2. Configure and save the following settings:
Parameter Description Configuration Method
Data Intelligent Traversal
Enable or disable the PC content
and FECC protocol to traverse
firewall.
Default: On.
Web user interface
VPN
The VPN (Virtual Private Network) technology establishes a private tunnel on the public network through
key exchange, encapsulation, authentication and encryption, to ensure the integrity, privacy, and validity
of the transmitted data. VCS uses OpenVPN to achieve VPN feature. To prevent disclosure of private
information, tunnel endpoints must authenticate each other before the secure VPN tunnel is established.
After you configure VPN feature on the system, the system will act as a VPN client and uses the
certificates to authenticate with the VPN server.
For more information, refer to OpenVPN Feature on Yealink IP Phones.
• Related VPN Files
• Configuring VPN
Related VPN Files
To use VPN, you should upload the compressed package of VPN-related files to the system in advance.
The file format of the compressed package must be *.tar. The related VPN files are certificates (ca.crt and
client.crt), key (client.key), and the configuration file (vpn.cnf) of the VPN client.
The following table lists the directories of the OpenVPN certificates, the key and the configuration file:
VPN files Description Unified Directories
ca.crt CA certificate /config/openvpn/keys/ca.crt
client.crt Client certificate /config/openvpn/keys/client.crt
client.key Private key of the client /config/openvpn/keys/client.key
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