Moxa Technologies UC-7420/7410 - Manual (Page 74)

UC-7420/7410 User’s Manual Managing Communication
4-22
virtual device, it sends the traffic to its peer.
7. To create an indirect connection to Host B from Host A, you need to add the following
routing item:
route add –net 192.168.4.0 netmask 255.255.255.0 dev eth0
To create an indirect connection to Host A from Host B, you need to add the following routing
item:
route add –net 192.168.2.0 netmask 255.255.255.0 dev eth0
Now ping Host B from Host A by typing:
ping 192.168.4.174
A successful ping indicates that you have created a VPN system that only allows authorized
users from one internal network to access users at the remote site. For this system, all data is
transmitted by UDP packets on port 5000 between OpenVPN peers.
8. To shut down OpenVPN programs, type the command:
# killall -TERM openvpn
Setup 2: Ethernet Bridging for Private Networks on the Same Subnet
1. Set up four machines as shown in the following diagram:
OpenVPN A
OpenVPN B
Host A
eth0: 192.168.2.171
Host B
eth0: 192.168.2.172
ixp0: 192.168.8.174
eth1: 192.168.2.173
local net
local net
InternetInternet
ixp1: 192.168.2.174
eth0: 192.168.8.173
2. The configuration procedure is almost the same as for the previous example. The only
difference is that you will need to comment out the parameter “up” in
“/etc/openvpn/A-tap0-br.conf” and “/etc/openvpn/B-tap0-br.conf”.