The term VPN can be used to describe many different network configurations and protocols. As such, it can become complex when trying to generalise about the characteristics of a VPN. Some of the more common uses of VPNs are described below, along with more detail about the various classification schemes and VPN models.
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CiscoWorks VPN/Security Management Solution (VMS) provides security management for Cisco devices. Cisco is not adding support for additional features and new devices in CiscoWorks VMS. Customers that require provisioning for Cisco firewalls, VPN’s, and Intrusion Prevention Systems (IPS) should consider the successor product Cisco Security Manager. Existing customers can plan their migration to take advantage of significant enhancements in the new software.
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A virtual private network (VPN) is a computer network that is layered on top of an underlying computer network.The private nature of a VPN means that the data travelling over the VPN is not generally visible, or is encapsulated from, the underlying network traffic.Similarly, the traffic within the VPN appears to the underlying network as just another traffic stream to be passed.
In more technical terms, the link layer protocols of the virtual network are said to be tunneled through the underlying transport network.
While wireless users will see a vast increase in their security, wired users' greatest benefit is the ability to claim a UIUC IP address from a third-party ISP. The VPN's primary purpose is to raise the security experienced by wireless users to the level that wired users have natively. This page explains what the VPN does and does not do for your system and its security.
But antivirus software, system patches, additional layers of encryption to finish the link between user applications and server applications, and vigilance are still required for system security. In addition, firewalls and other security measures are still recommended .
A VPN connection protects your information between your applications and the VPN server itself. It does not provide complete end-to-end security. Wireless users at the Urbana campus are encouraged to use the VPN system because unencrypted wireless communication can be intercepted in the air far more easily than wires can be tapped and interpreted. VPN is recommended for remote-access users who need an on-campus IP address to authenticate themselves. |
