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CYBER Next-Generation-Firewall-là-gìsự-khác-biệt-so-với-tường-lửa-truyền…

- - - - a game
      - utility package
  - - - replicated copies
      - degrades the performance of
        legitimate applications
      - overload an entire network or internet
- - - - Making an action illegal does not preclude the action.
      - International nature of networking means that obtaining recourse is often very difficult. What is illegal in one
        country might be legal in another.
- - - - Originally developed by Netscape
  - - - Encrypt messages
        
        The public key is first to distribute to those who might need to send message to a particular destination
    - - Decrypt messages
        
        Held in confidence at this destination
  - - - These authoriteis act as a sever
        
        Provide reliable public key information to their clients in packages known as certificates
  - - - By attaching that signature to the a message, the sender can mark the message as being authentic
- - - - intruder might gain entry to a computer is by establishing contact through a “hole” left by a nonexistent server
    - - block unwanted email
    - - prevent IP spoofing attack
  - - - goal of shielding the client from adverse actions of the server
    - - FTP proxy server could check all incoming files for the presence of known viruses and block all infected files