Virtual Private Networks Essay -- VPN Internetworking Computers Intern

Virtual personal NetworksVirtual Private Networks (VPNs) are an easy and cost effective focal point to connect two or more internets over the Internet. This is achieved by using encrypted tunnels for earnest and efficiency. VPNs use encapsulated and encrypted IP packets and transport them across leased local Area Network (LAN) lines.The benefits of using VPNs are decreased cost overhead, garnishd management overhead, and added security (Microsoft Press, 2000). Least network lines are expensive and VPNs reduce then need for extra data connections. This in turn also aids in reducing the amount of overhead associated with managing a network. The added security benefits for a network include encrypted transmission of network data and exploiter authentication.Passing datagrams across the Internet between sites dejection cause major(ip) security risk. When a datagram is passed internally within a private network it is secured behind a router and /or firewall. When datagr ams are passed externally outsiders can manage them as they pass over networks owned by other organizations (Comer, 1995). This can cause great security problems. Unencrypted packet headers contain valuable randomness about the internal structure of an organizations network.VPNs have overcome the problem of range Internet access to servers and clients through a combination of the following security components IP encapsulation, cryptographic authentication, and data payload encryption. For a true VPN to exi...