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Link: http://codepad.org/r6jlJ7vi    [ raw code | fork ]

C, pasted on May 26: 
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###network/interfaces
auto lo br0 eth1

iface lo inet loopback

iface br0 inet static 
  address 192.168.1.10
  netmask 255.255.255.0
  gateway 192.168.1.1
  bridge_ports eth0

iface eth0 inet manual
  up ifconfig $IFACE 0.0.0.0 up
  up ip link set $IFACE promisc on
  down ip link set $IFACE promisc off
  down ifconfig $IFACE down 

iface eth1 inet static 
  address 192.168.0.1
  netmask 255.255.255.0



### ifconfig output:

br0       Link encap:Ethernet  HWaddr 08:00:27:ef:6b:9a  
          inet addr:192.168.1.10  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feef:6b9a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:31 errors:0 dropped:0 overruns:0 frame:0
          TX packets:45 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5686 (5.6 KB)  TX bytes:5321 (5.3 KB)

eth0      Link encap:Ethernet  HWaddr 08:00:27:ef:6b:9a  
          inet6 addr: fe80::a00:27ff:feef:6b9a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:987 errors:0 dropped:0 overruns:0 frame:0
          TX packets:136 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:302155 (302.1 KB)  TX bytes:12872 (12.8 KB)
          Interrupt:10 Base address:0xd020 

eth1      Link encap:Ethernet  HWaddr 08:00:27:24:ee:da  
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe24:eeda/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:526 (526.0 B)  TX bytes:3862 (3.8 KB)
          Interrupt:9 Base address:0xd240 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:12 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:720 (720.0 B)  TX bytes:720 (720.0 B)


### vpn config 

cat /etc/openvpn/server.conf
mode server
tls-server

local 192.168.0.2 ## ip/hostname of server
port 1194 ## default openvpn port
proto udp



#bridging directive
dev tap0 ## If you need multiple tap devices, add them here
up "/etc/openvpn/up.sh br0"
down "/etc/openvpn/down.sh br0"

persist-key
persist-tun

#certificates and encryption
ca ca.crt
cert server.crt
key server.key  # This file should be kept secret
dh dh1024.pem
tls-auth ta.key 0 # This file is secret

cipher BF-CBC        # Blowfish (default)
comp-lzo

#DHCP Information
ifconfig-pool-persist ipp.txt
server-bridge 192.168.0.2 255.255.255.0 192.168.0.100 192.168.0.110
push "dhcp-option DNS your.dns.ip.here"
push "dhcp-option DOMAIN yourdomain.com"
max-clients 10 ## set this to the max number of clients that should be connected at a time

#log and security
user nobody
group nogroup
keepalive 10 120
status openvpn-status.log
verb 3


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