chapter 3 ccna 2

chapter 3 ccna 2

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A malicious webpage is an ActiveX containing harmful code embedded in the webpage. When a user opens a webpage containing harmful code without knowing it, the code will take effect and maliciously modify the user's registry. (1) The configuration of the FTP service client. The combination of virus technology and hacker technology poses a greater threat to information security. In recent years, popular computer viruses have been combined with the network without exception, and have multiple transmission methods and attack methods. Once they break out, they will quickly spread on the network. 1) Static address translation 3) Array boundary check (3) Instance : Part 2 . Further description of name , such as the host name where name is located or the type of name , etc., can be omitted. It is the first one with the portion between the / partition, but as a written description of the host Host / Instance . A virtual operating environment is created, and users are restricted from accessing any resources other than the environment, as long as the sandbox is not exceeded, it is safe. This entry contains the following information. Username: will . (1) Trojan horses need a way to start, generally in the registry start group. The public key algorithm will become the mainstream of the shared software encryption algorithm because of its good security (of course it is still used by the author ) . In RSA example, when N is the number of bits is greater than 1024 after the ( strong prime number ) , now considered difficult to decompose. 1.8 Development Trend of Cybersecurity Threats (2) Rising anti-virus software configuration. 1) System reliability 4) Automatic recovery function The internal address is translated to an address in a global address pool. This type of translation is dynamic address translation. (1) a first 1 bit indicates the maximum change password may not exist several weeks. (3) Restrict visitors from leaving a strictly controlled point. (1) Close unnecessary services on the service, while restricting open SYN half the number of connections, shortens SYN semicontinuous timeout contact, update system patches. (3) To solve the backdoor program left by the virus, remove all the Tftp*.exe and Root.exe files in the Scripts directory of the IIS service . 1. ciphertext-only attack (Ciphertext-only Attack) The e-commerce security system includes 4 parts: server side, bank side, client side and certification authority. Among them, the service works-side include: secure proxy service provider end, database management systems, audit management information system,chapter 3 ccna 2, Web server systems. The bank side mainly includes: bank side security agency, database management system, audit information management system, business system, etc. Server and client, the bank client to communicate with the client for server authentication mechanism to ensure card e-commerce transactions can be safely carried out.

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