ccna overview

ccna overview

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The X.509 certificate format generated by eCertCA/PKI is the standard X.509/V3 format, especially for X.509/V3 S15 The purpose of this mechanism is to prevent illegal attackers from monitoring information on the transmission channel and illegally performing traffic and flow analysis. The countermeasures can use the security device to continuously send out pseudo-random sequences when there is no information transmission to confuse the useful information that illegal persons want to obtain. The dynamic authentication working steps of the SET system are shown in Figure 9.4 . The speed and simplicity of DES and the convenience and safety of RSA key management. In addition, the RSA algorithm has the following disadvantages: (2) If the driver cannot send the packet immediately, it will be sent to the "to be transmitted" queue, and then the interrupt processing function MYNE2000HandleInterrupt will complete the transmission. After the transmission is completed, call the NdisMSendComplete function to notify the upper layer that the transmission has been completed. (2) ElGamal : can be used for information encryption and digital signature. 6.6.3 Code Red (Code Red) virus killing It is to snoop on the secrets or privacy of others, and does not intend to steal any data and destroy the system. Some other hackers for a variety of reasons, such as PETTY, revenge, protests invasion and tampering with the contents of the target site, humiliate each other. For example , after the US-led NATO bombed our embassy in South Africa in May 1999 , a group of hackers who claimed to be "justice" broke into the White House, the US Embassy in China, the US Department of Defense, and the US Air Force and other official websites, tampering with their homepages. , In protest. The third category is malicious attacks and destruction, which are the most harmful and account for the largest proportion. Some seek illegal economic benefits, such as illegally withdrawing others’ bank deposits by embezzling accounts, or blackmailing individuals, groups, and countries, causing heavy economic losses to individuals,ccna overview, groups, and countries, and some deliberately destroying the other’s computer systems. Service for political, military, and economic purposes. System, an important program data can be tampered with, destroyed, or even lost, resulting in a system crash, paralyzed business, the results could be disastrous.

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Latest Cisco CCNA 200-301 Dumps

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