Virtual Private Networks (VPNs) A Virtual Private Network (VPN) is a way of connecting local area networks together securely without the cost of leasing a private line, Using the internet alone is not secure - however it is possible to use it to establish a connection between <PERSON> using a secure path, The secure path is established with software which uses cryptographic tunnelling protocols that have measures to prevent interception, packet sniffing and identity spoofing -- ensuring data only gets to the correct host, A VPN therefore is a way of setting up a private WAN using an existing public network which most LANs are attached to in some shape or form.