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.

Remote access topology (server only)

In remote access mode, two different remote access topologies can be configured by using the topology argument. The two different topologies are subnet and point-to-point, as shown in the following example.

Configuration options related to topology

interfaces {
    openvpn if_name{
        server {
            topology [subnet|point-to-point]
        }
    }
}

The topology argument primarily specifies how the tunnel interface is configured, how the addresses are allocated, and so on. At a high level, these topologies have the following implications.

  • subnet: This topology is compatible with OpenVPN clients on Windows hosts and is the default if topology is not used. Routing protocols that are configured to use a broadcast-style network are suited to this topology. However, this topology does not provide client isolation; that is, clients can reach one another.
  • point-to-point: This topology is not compatible with Windows clients, and routing protocols using a broadcast-style network do not work with this topology. On the other hand, this topology provides client isolation.