ZeroShell implements the Host-to-LAN Virtual Private Networks using standardised L2TP/IPSec protocol. Why is OpenVPN not used in this case?
For Host-to-LAN Virtual Private Networks, in which the VPN gateway must connect the so-called Road Warrior clients, off site users wish to access their LAN resources as if they were physically connected. ZeroShell prefers to use standard protocol such as L2TP/IPSec because for the majority of operating systems it doesn’t require installation on third party software clients. OpenVPN would instead require installation of an external client. In fact, it is most probable that future releases of ZeroShell will allow the use of OpenVPN as a Host-to-LAN gateway. • I configured Windows XP to create a VPN L2TP/IPSec towards a ZeroShell VPN gateway. However, when I try to activate the VPN, Windows XP gives me the message that there is no certificate to establish the IPSec connection. What does it depend on? L2TP/IPsec protocol is a combination of two protocols: the first is the well-known IPSec used to establish a encrypted IP tunnel between the client and the VPN gateway; the second is L2TP (La
