9tut ccna comments

9tut ccna comments

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Asymmetric key cryptography ( i.e., public key cryptosystem ) compared with symmetric key cryptography, which does not have a substitutable advantages, its calculation amount much larger than the latter, more than hundreds of times, thousands of times Even tens of thousands of times, much more complicated. ③ Double-click Hypertrm.exe to start HyperTerminal. outbound 10 deny 204.31.17.11 255.255.255.255 www tcp apply(inside)10 outgoing _dest Source host port Table . 5 - . 6 described nameif options and parameters of the command, the command syntax is as follows. (4) The newly purchased computer should be checked for viruses before use to prevent the machine from being infected. Specification , NDIS) , and then understand a network link encryption scheme based on NDIS . 3) Configure Cisco PIX 515 firewall 6) Proxy Trojan Horse The RSA asymmetric key cryptosystem is used to transmit the DES key, and the advantages of the two cryptosystems can be integrated, namely Identification 1. Security threats to confidential information The sender generates a pair of keys, uses the public key to encrypt the secret key ( control word ) , and then transmits it to the receiver through the network. 3) Principle of Distributed Denial of Service Attack If an organization wants to join a secure e-commerce system based on the SET protocol, it must first go online to apply for registration and digital certificates. Web\Folder.htt . Cryptanalysis is the science of recovering plaintext without knowing the key. Cryptanalysis can also find weaknesses in the cryptosystem. (2) Master the acquisition of security certificates in E-mail services. In the 1960s , a living software appeared that could replicate itself. At that time, the programming idea of Living ( self-replication ) was very popular. Since then, the challenging development of virus-type programs has spread widely in academia. (3) The virus will slow down the computer. The key between user A is encrypted, and when user A and user B are talking, user A will give this label to user B. The purpose of this tag is to convince user A that user B is talking to him,9tut ccna comments, not an imposter. Because this tag is only the user B and the KDC encrypting key known, even if the user A label obtained impostor can not be emitted into decrypted, only user B can decrypt after receipt, and to determine the User A is talking to user B. When KDC generates tags and random session passwords, it will use them with a key that only User A and KDC know.

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