Abstract
A Virtual Private Network (VPN) is a secure way of sending data over public networks. It works by encapsulating your data in an encrypted form inside a Transmission Control Protocol/Internet Protocol (TCP/IP) packet. Hardware solutions have hardware, operating system, and VPN software optimized to work together for maximum efficiency. The entire system is hardened against attacks. It discusses that a well-configured VPN solution offers the solution to most, if not all, of these problems. In addition, a VPN provides a secure channel between geographically dispersed offices without the cost of private leased lines. It also focuses on different types of VPNs: IP Security (IPSEC), Point-to-Point Tunneling Protocol (PPT), Layer 2 Tunneling Protocol (L2TP), and Secure Sockets Layer (SSL).
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