Title: A Unix Network Protocol Security Study: Network Information Service 
Authors: David K. Hess  David R. Safford  Udo W. Pooch   
File name:pubdocnetworkhess-safford-pooch-NIS_paper.ps.gz 
File size: 20388bytes 

Abstract: This paper is a study of the security weaknesses
present in a widely used Unix network protocol, Network
Information Service(NIS).