CNET Wireless-G CardBus Adapter CWC-800 Bedienungsanleitung PDF herunterladen (Seite 59)

UC-7400-LX Plus User’s Manual Managing Communications

4-18

Setup 1: Ethernet Bridging for Private Networks on Different Subnets

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

OpenVPN A

OpenVPN B

Host A

LAN1: 192.168.2.171

Host B

LAN1: 192.168.4.172

LAN1: 192.168.8.174

LAN1: 192.168.2.173

local net

tenretnItenretnI

LAN2: 192.168.4.174

LAN2: 192.168.8.173

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.

# openvpn --genkey --secret secrouter.key

Copy the file that is generated to the OpenVPN machine.

2. The openvpn-bridge script file located at “/etc/openvpn/” reconfigures interface “eth1” as

IP-less, creates logical bridge(s) and TAP interfaces, loads modules, enables IP forwarding,

etc.

#---------------------------------Start-----------------------------

#!/bin/sh

iface=eth1 # defines the internal interface

maxtap=`expr 1` # defines the number of tap devices. I.e., # of tunnels

IPADDR=

NETMASK=

BROADCAST=

# it is not a great idea but this system doesn’t support

# /etc/sysconfig/network-scripts/ifcfg-eth1

ifcfg_vpn()

{

while read f1 f2 f3 f4 r3

if [ “$f1” = “iface” -a “$f2” = “$iface” -a “$f3” = “inet” -a “$f4” = “static” ];then

i=`expr 0`

while :

if [ $i -gt 5 ]; then

break

i=`expr $i + 1`

read f1 f2

case “$f1” in

address ) IPADDR=$f2

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 80 81

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