I need to be able to connect my windows users to my Ubuntu Server through a VPN via Internet so that they can brows the Shared Folder once connected to the Server. I basically have 2 NIC's already Installed. Here is my etc/network/Interface configuration FYI. I have 2 Virtual Servers Running on Ubuntu and have a 2nd HDD sharing my Files.
auto lo
iface lo inet loopback
#The Primary network interface
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 192.168.2.100
netmask 255.255.255.0
network 192.168.2.0
broadcast 192.168.2.255
gateway 192.168.2.1
dns-nameservers 208.67.222.222 208.67.220.220
dns-search google.com
bridge_ports eth0
bridge_stp off
bridge_fd 0
bridge_hello 2
bridge_maxwait 0
post-up ip link set br0 address 00:10:18:77:5e:46
#Secondary network interface
# auto eth1
# iface eth1 inet static
# address 192.168.2.150
# netmask 255.255.255.0
# network 192.168.2.0
# broadcast 192.168.2.255
# gateway 192.168.2.1
# dns-nameserver 192.168.2.1 8.8.8.8
Any help is much appreciated. Please also note that I am not an expert rather a newbee.