protection password
4.This paper discusses the Linux system security from the view of both the system administrator and the user and describes the password, the file protection, the directory protection, the system daily files, some characteristics related to the user′s programs and the code to be set by using the Crypt order,etc. It also gives some important security attentions to help the users to protect the system security of their own.
5.This paper discusses on the security of DCN network from the angle of system manager, gives some important sinsere advise for the security of unix host user password and file protection, helping users protect their own account security and prevent illegal intrusion by using ACL to filter the information flow passing through the network euipment.
