Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

Firewall configuration

The firewall configuration for an OpenVPN tunnel interface is the same as the configuration for other types of interfaces. Here is an example.

To configure firewall on V1, perform the following steps in configuration mode.

Table 1. V1 OpenVPN firewall configuration
Step Command
Create the vtun0 configuration node.
vyatta@V1# set interfaces openvpn vtun0
Enter configuration commands.
Set the firewall rule for inbound traffic on the vtun0 interface.
vyatta@V1# set interfaces openvpn vtun0 firewall in rules-in
Enter configuration commands.
Commit the change.
vyatta@V1# commit
Show the OpenVPN configuration.
vyatta@V1# show interfaces openvpn
 openvpn vtun0 {
     firewall {
         in rules-in

For more information on configuring firewall for interfaces, see the firewall chapter in Ciena Vyatta Network OS Firewall Configuration Guide.