Segurança no acesso remoto VPN

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

A Virtual Private Network (VPN) is an important component in a cooperative computing environment, since it allows expensive dedicated connections and remote access infrastructures to be substituted by cheaper public connections. However, the use of a public network for transporting private information, and the consequent extension of an organization s security perimeter, brings serious implications for information security. Remote access VPN, in which a remote user has direct access to an organization s resources, has even more serious, speci_c, security implications that must be addressed. In this context, the choice of the most appropriate security mechanisms for enabling remote access whilst ensuring the security of the cooperative environment, in a diverse range of possible scenarios, is a fundamental decision. This work presents the results of a detailed study of the diverse aspects involved in the elaboration of a secure and viable remote access VPN solution. From this study, it has been possible to identify the principal requirements for remote access VPN and review some of the existing solutions available for this complex scenario. Using these results, a remote access VPN solution has been developed using the FreeS/WAN software, an opensource implementation of the IPSec protocol for Linux. Due to the signi_cant market share occupied by Microsoft products, some Windows based client VPN solutions are also discussed

ASSUNTO(S)

internet (redes de computação) redes de computação - medidas de segurança redes de computação - protocolos criptografia

ACESSO AO ARTIGO

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