cisco certified network associate-security

cisco certified network associate-security

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At present, for dynamically transmitted information, most of the methods used by many protocols to ensure the integrity of the information are the methods of receiving errors and retransmitting and discarding subsequent packets. However, hacker attacks can change the contents of the information packets, so effective measures should be taken to complete the information. Sexual control. Figure 7.21 "Server Configuration" interface 9.1.3 Security requirements of e-commerce 4. Defend against viruses on the network 9.1.1 The concept of e-commerce security (3) Using online dynamic authorization (Authority) and authentication check (Certificate) to ensure the safety and reliability of the transaction process. 2. Classification of denial of service attacks That is, the startup configuration file of the application. The control terminal uses the characteristics of these files to start the program and uploads the prepared file with the same name with the Trojan horse startup command to the server to overwrite these files with the same name, so that the purpose of starting the Trojan horse can be achieved. 3. Availability (1) Guess the simple password: Many people use a few of their own or family members’ birthday, phone number, room number, simple numbers, or ID number; others use the names of themselves, children, spouses or pets; and the pipe system administrator using the password , do not even password, a hacker can easily get the password by conjecture. (7) Try not to start the computer with a floppy disk. 3.6.2 Password attack based on plaintext Note: The way the PIX firewall allocates addresses from the global address pool is from the low end to the high end of the range specified by the global command. (6) Allow DNS access. Allow Internet users to access the internal DNS server. 2. Encryption protection After doing this, the target computer may hang up or restart. Because -l 65510 generates a huge data packet. Due to the requirement to return the same data packet,cisco certified network associate-security, the target computer will not be able to react. (6) Registry operations: including all registry operations functions such as browsing, adding, deleting, copying, renaming, and reading and writing key values. If the user needs to send encrypted data, the sender needs to use the recipient's digital certificate ( public key ) to encrypt the data, and the recipient uses its own private key to decrypt the data, thereby ensuring the security and confidentiality of the data. 2. Steps to prevent hacking Refers to the characteristics that network information can be correctly accessed by authorized entities, and can be used normally or resumed in abnormal conditions as required, that is, the required information can be correctly accessed when the system is running, and when the system is attacked or damaged, it can Quickly recover and can be put into use. Usability is a measure of the security performance of network information systems facing users.

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