OpenVPN Support Forum

Hi

I have made the setup of openvpn up and running but i am enable to connect with my DHCP network

here is the architecture of my network

i have a dsl modem connected with wifi router of tplink both are in dhcp and connected to my desktop which has windows 7 i have another Laptop in which ubuntu 11.04 natty is installed with an static ip 192.168.2.10 which act as a vpn server

DSL Modem Info
IP : 192.168.1.2 (it is in DHCP configuration)
Mask : 255.255.255.0
default gateway: 192.168.1.1 (internet connection on this IP)

TPlink Wifi router
IP : 192.168.2.2 (it is in DHCP configuration)
Mask : 255.255.255.0
default gateway: 192.168.2.2

Routing Table information
ID Destination Network Subnet Mask Gateway Interface
1 192.168.2.0 255.255.255.0 0.0.0.0 LAN & WLAN
2 192.168.1.0 255.255.255.0 0.0.0.0 WAN
3 239.0.0.0 255.0.0.0 0.0.0.0 LAN & WLAN
4 0.0.0.0 0.0.0.0 192.168.1.1 WAN

Ifconfig output
eth0 Link encap:Ethernet HWaddr 00:1e:ec:81:b3:f3
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:738 errors:0 dropped:0 overruns:0 frame:0
TX packets:234 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:82439 (82.4 KB) TX bytes:30697 (30.6 KB)
Interrupt:16 Base address:0x1000

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:2786 errors:0 dropped:0 overruns:0 frame:0
TX packets:2786 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:216970 (216.9 KB) TX bytes:216970 (216.9 KB)

tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:192.168.255.1 P-t-P:192.168.255.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

wlan0 Link encap:Ethernet HWaddr 00:22:68:98:e0:02
inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::222:68ff:fe98:e002/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15392 errors:0 dropped:0 overruns:0 frame:0
TX packets:6723 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4023215 (4.0 MB) TX bytes:1068844 (1.0 MB)

openvpn Server configuration file:

dev tun
port 6999
proto udp
ca keys/ca.crt
cert keys/server.crt
key keys/server.key #secret file
dh keys/dh1024.pem
server 192.168.255.0 255.255.255.0
push “route 192.168.2.0 255.255.255.0”
keepalive 10 120
comp-lzo
user nobody
group nogroup
persist-key
persist-tun
verb 3
mute 20

Client Configuration file for windows openvpn

dev tun
port 6999
proto udp
remote 192.168.2.10
ifconfig 192.168.255.2 192.168.255.1
ca ca.crt
cert client1.crt
key client1.key
tls-client
keepalive 10 20
comp-lzo
user nobody
group nogroup
persist-key
persist-tun
verb 3

please help me out

server 192.168.255.0 255.255.255.0
-------
ifconfig 192.168.255.2 192.168.255.1

You can't use 255 as IP. It is a broadcast IP, meaning the packed is for everyone. Change it to, for example, 254.

Well spotted Mimi'. Now is your problem resolved shaheryar?

wrong, Mimiko: 192.168.255.1 is a perfectly valid address ;

remove the line from your client config file and try again