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Security Mechanism
Murphy's theorem
Excerpted from Baidu Encyclopedia
Murphy's Law is a psychological effect proposed by Edward A. Murphy, an American engineer, in 1949. It is also known as Murphy's Law, Murphy's Theorem, etc.
The original text is: If there are two or more ways to do something, and one of the choices will lead to disaster, someone will make that choice. The bottom line is: if there is a chance that things will go bad, no matter how small the possibility, it will happen.
"Murphy's Law", "Parkinson's Law" and "Peter's Principle" are collectively known as the three major discoveries of Western culture in the twentieth century.
·任何事情都没有表明看上去那么简单
·所以的事情都比你预计的时间长
·会出错的事情总会出错
·如果你担心某种情况发生，那么它就更有可能发生
The goal of information security protection
●Confidentiality Confidentiality
●Integrity
●Usability
●Controlbility
●Non-repudiation
Safety protection link
●Physical security: various devices/hosts, computer room environment
●System security: the operating system of the host or device
●Application security: various network services, applications
●Network security: control of network access, firewall rules
●Data security: information Backup and recovery, encryption and decryption
●Management security: various guarantee specifications, processes, and methods
Common security attacks STRIDE
●Spoofing
●Tampering
●Repudiation
●Information Disclosure
●Denial of Service
●Elevation of Privilege
Information leakage example: Use wireshark to capture login password.
Step 1: yum -y install telnet-server
