I'm trying to install openvpn-2.3.6 on Ubuntu 14.04 LTS to work with TUN/TAP.

I have downloaded the package from: http://swupdate.openvpn.org/community/releases/openvpn-2.3.6.tar.gz

extracted it and try to install it using command line terminal.

but the following error apperared:

"configure: error: ssl is required but missing"

How can I solve this problem to complete openvpn-2.3.6 installation?

I'm following the instructions in the following link: http://backreference.org/2010/03/26/tuntap-interface-tutorial/

which uses the openvpn tool to configure the virtual tun interface.

Can I make tunnels and configure tun interface without the assestance of openvpn or any other tool.

do any one have simple example for using tun on ubuntu?

For the error "configure: error: ssl is required but missing"

You will need to install libssl-dev.

sudo apt-get install libssl-dev

For the error "configure: error: lzo enabled but missing"

sudo apt-get install liblzo2-dev

For the error "configure: error: libpam required but missing "

sudo apt-get install libpam0g-dev