RFC 2623:NFS Version 2 and Version 3 Security Issu...
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clients and server


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... group identifiers between NFS clients and servers. ...


... Thus the description of operation of NFS clients and servers over Kerberos V5 is limited to the DES ...
... NFS clients and servers operating over Kerberos V5 MUST support the DES ...
... bit DES. NFS clients and servers SHOULD support the 56 bit DES ...



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