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System Security (Linux (Relevant Log File (lastlog, sulog, btmp, logging,…

- - - - /etc/xinetd.conf
  - - - yearly
        
        Run once a year at midnight of 1 January
        0 0 1 1 ＊
      - monthly
        
        Run once a month at midnight of the first day of the month
        0 0 1 ＊＊
      - daily
        
        Run once a day at midnight
        0 0 ＊＊＊
      - hourly
        
        Run once an hour at the beginning of the hour
        0 ＊＊＊＊
  - - - Sticky Bit
        (user ownership access right)
        
        Chmod
        (Command)
      - setuid
        (set u ser ID upon execution)
      - setgid
        (set g roup ID upon execution)
    - - TCP Wrapper
        (host-based networking ACL system)
        
        /etc/hosts.allow
        
        /etc/hosts.deny
  - - - -mtime
        (최근 n*24 시간 이전에 변경된 적이 있는 파일)
    - - find [검색대상위치] [옵션] [수행할작업]
- - - - Heap-based exploitation
      - Stack-based exploitation
  - - - Resource Management
        
        1 layer = Processor management and Synchronization
        
        2 layer = Allocate and Collect Memory
        
        3 layer = Process management
        
        4 layer = Device management
        
        5 layer = I/O devices management