Frame relay networks: specifications and implementations
Frame relay networks: specifications and implementations
The official PGP user's guide
Description of a New Variable-Length Key, 64-bit Block Cipher (Blowfish)
Fast Software Encryption, Cambridge Security Workshop
Hash functions based on block ciphers
EUROCRYPT'92 Proceedings of the 11th annual international conference on Theory and application of cryptographic techniques
Design of a VPN Software Solution Integrating TCP and UDP Services
InfraSec '02 Proceedings of the International Conference on Infrastructure Security
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Virtual Private Network (VPN) solutions mainly focus on security aspects. Their main aims are to isolate a distributed network from outsiders and to protect the confidentiality and integrity of sensitive information traversing a non-trusted network such as the Internet. But when security is considered the unique problem, some collateral ones arise. VPN users suffer from restrictions in their access to the network. They are not free to use traditional Internet services such as electronic mail exchange with non-VPN users, and to access Web and FTP servers external to the organization. In this paper we present a new solution, located at the TCP/IP transport layer that, while maintaining strong security features, allows the open use of traditional network services. The solution does not require the addition of new hardware because it is an exclusively software solution. As a consequence, the application is totally portable. Moreover, the implementation is located at the transport layer; thus, there is no need to modify any software previously installed, like FTP, Telnet, HTTP, electronic mail or other network applications.