Do NFS Administration Guide da Sun http://docs.sun.com/app/docs/doc/802-1963/6i5v8k26q?a=view Secure NFSThe NFS environment is a powerful and convenient way to share file systems on a network of different computer architectures and operating systems. However, the same features that make sharing file systems through NFS operation convenient also pose some security problems. An NFS server authenticates a file request by authenticating the computer making the request, but not the user when using UNIX authentication. When using UNIX authentication, a client user can run su and impersonate the owner of a file. If DES authentication is used, the NFS server will authenticate the user, making this sort of impersonation much harder.
André Carezia wrote:
Thadeu Penna wrote:Não, mas quando se trata de Linux e NFS. Solaris tem o secure-nfs.Mas o sNFS continua sendo feito para autenticar *máquinas*, não usuários. A autenticação é mais robusta, pois se baseia em criptografia de chave pública (DES). Somente o "root" pode montar compartilhamentos sNFS. Um usuário "root" na máquina-cliente, usando "su", continua tendo acesso completo a qualquer arquivo pertencente a qualquer usuário que esteja na base de dados (/etc/passwd ou NIS).
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Linux User #50500 `-
Prof.Adjunto - Instituto de Física ---Debian-
Universidade Federal Fluminense Alpha/i386