Hi,
I m using Linux Openvpn server and windows openvpn clients. I have around 20-30 locations. My linux openvpn server is in head office and all the other 20-30 locations i m using windows openvpn clients. In those 20-30 locations some sip devices are there whose gateway is windows openvpn clients machine so that those devices can directly communicate to Linux openvpn server.

My problem is this that most of the locations are 192.168.1.0 network. So is there any confliction can occure because of same ip address in 192.168.1.0 range in different locations ?? What should be a better idea to deploy such kind of networks ? You can say that I m gonna use Openvpn as a PPTP server functionality.   

Thanks in advance.

[Linux server.conf]
port 1194
proto udp
dev tun
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/server.crt
key /etc/openvpn/easy-rsa/keys/server.key  # This file should be kept secret
dh /etc/openvpn/easy-rsa/keys/dh1024.pem
server 10.8.0.0 255.255.255.0
tls-server
client-config-dir /etc/openvpn/clients
route 192.168.1.0 255.255.255.0
keepalive 10 120
comp-lzo
persist-key
persist-tun
status openvpn-status.log
verb 3
management localhost 7505


[/etc/openvpn/clients]
iroute 192.168.1.0 255.255.255.0

[Windows client.conf]
client
dev tun
proto udp
remote myserver.address.com 1194
resolv-retry infinite
nobind
persist-key
persist-tun
ca /openvpn/easy-rsa/keys/ca.crt
cert /openvpn/easy-rsa/keys/client1.crt
key /openvpn/easy-rsa/keys/client1.key
comp-lzo
verb 3