MikroTik L2TP/IPsec VPN is able to create a secure and encrypted L2TP Tunnel between a remote client and L2TP Server across public network. So, a remote L2TP client can communicate to L2TP Server's local network as if it was directly connected to the local network. L2TP/IPsec setup guide is available in this video.
For more details: http://systemzone.net/mikrotik-l2tp-i...