cisco ccna 6 pdf

cisco ccna 6 pdf

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(1) RSA : can be used for information encryption and digital signature. (6) Glacier Messenger: point-to-point chat room,cisco ccna 6 pdf, which is the legendary "two-person world". Broadly speaking, all related technologies and theories that involve the confidentiality, integrity, availability, non-repudiation, and controllability of information on the network are the research fields of network security. (2) Checksum: One of the simplest and most feasible methods of integrity control is to use the checksum to calculate the checksum value of the file and compare it with the value calculated last time. If they are equal, the file has not changed; if they are not , the file may have been changed by undetected behavior. The checksum method can check errors, but cannot protect data. (3) Make the following modifications to the registry. When defining the command syntax on the PIX firewall, the local address is defined as the address assigned to the internal host ( for example, a host on the relatively more trusted side in a session through the PIX ) . Global Data reception is to receive the data frame on the network into the buffer of the network card, and then the driver reads the data in the buffer into the memory. A password cracker is a program that can decode passwords or invalidate password protection. Password crackers generally do not really decode, because in fact many encryption algorithms are irreversible. In other words, it is impossible to reverse the original unencrypted data from the encrypted data and the encryption algorithm. In fact, most password crackers try to encrypt these words one by one with a known encryption algorithm, until they find that the encrypted result of a word is the same as the data to be decrypted, they think that the word is the password to find. . This is currently the most effective method.

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Latest Cisco CCNA 200-301 Dumps

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