Download A comprehensive guide to virtual private networks. Volume by International Business Machines Corporation PDF

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Extra info for A comprehensive guide to virtual private networks. Volume III, Cross-platform key and policy management

Sample text

The key recovery agents can decrypt keys with their private keys, then encrypt retrieved keys with the public key of an LEA and send them to the LEA. LEAs can decrypt keys with their private keys and then decrypt the previously retrieved ciphertext messages. 1 Export/mport regulations Whenever you choose to use encryption you have to make sure what level of encryption is legally allowed to be used in your country and for the nature of your business. Usually, banks can employ higher levels of encryptions than home office users, and some countries are more restrictive than others.

The gateway should strictly limit the type and number of protocols allowed to flow through it or terminate connections at the gateway from either side, because protocols potentially provide security holes. • Any system containing confidential or sensitive information should not be directly accessible from the outside. • Generally, anonymous access should at best be granted to servers in a demilitarized zone. • All services within a corporate intranet should require at least password authentication and appropriate access control.

VPN technology offers an alternative for companies to build a private and cost-effective extended corporate network with worldwide coverage, exploiting the Internet or other public network. Suppose you are a major parts supplier to a manufacturer. Since it is critical that you have the specific parts and quantities at the exact time required by the manufacturing firm, you always need to be aware of the manufacturer′s inventory status and production schedules. Perhaps you are handling this interaction manually today, and have found it to be time consuming, expensive and maybe even inaccurate.

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