Moxa Technologies W341 Manual De Usuario

 

 

OpenVPN provides two types of tunnels for users to implement VPNS: Routed IP Tunnels and 
Bridged Ethernet Tunnels. To begin with, check to make sure that the system has a virtual 
device /dev/net/tun. If not, issue the following command: 

An Ethernet bridge is used to connect different Ethernet networks together. The Ethernets are 
bundled into one bigger, “logical” Ethernet. Each Ethernet corresponds to one physical interface 
(or port) that is connected to the bridge. 

On each OpenVPN machine, you should generate a working directory, such as /etc/openvpn, 
where script files and key files reside. Once established, all operations will be performed in that 
directory. 

 

1.  Set up four machines, as shown in the following diagram. 

OpenVPN A

OpenVPN B

 

Host A (B) represents one of the machines that belongs to OpenVPN A (B). The two remote 
subnets are configured for a different range of IP addresses. When this setup is moved to a 
public network, the external interfaces of the OpenVPN machines should be configured for 
static IPs, or connect to another device (such as a firewall or DSL box) first. 

Copy the file that is generated to the OpenVPN machine. 

2.  Generate a script file named openvpn-bridge on each OpenVPN machine. This script 

reconfigures interface “eth1” as IP-less, creates logical bridge(s) and TAP interfaces, loads 
modules, enables IP forwarding, etc.