ccna 8.2.1.5

ccna 8.2.1.5

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(7) Use city transaction key card, city transaction key card transmission card, city master key card, city master key card transmission card to issue user card mother card ( directly cipher text to derive the key, on the user card mother card Create two directories ADF respectively , import the key on the mother card directly, without adding the protection key ) . 4.4.2 eCertCA / PKI (5) non-repudiation (Non-repudiation) : First, anti-denial of service with a source of evidence, and second-repudiation with proof of delivery of services. The current NIS ( Network Information System) was also called YP (Yellow Pages) before . The purpose of NIS is to allow multiple computers on a network to share configuration information, including password data. The purpose of NIS is to improve the security of the system . If the NIS system is used , the password file is quite small,ccna 8.2.1.5, and it may look like the following. 4) Commonly used port scanning technology global command parameters / options (2) The sender A uses its own private key PV A to encrypt the digital digest MD using the asymmetric RSA algorithm , and then the digital signature DS is obtained . /hawk.the9.com@THE9.COM "representsRealm"THE9.COM"hosthawk.the9.com user on cnhawk , and the Principal"Host / hawk.the9.com @ THE9.COM"is generally used to referRealm"THE9.COM" hostshawk.the9.com . As long as users browse such web pages, the hard disk will be shared, which is more harmful than Trojan horse programs. Hackers can use this method to treat the user's hard disk as his logical hard disk, copy files, delete files, rename files, and even format the hard disk in the computer. (1) Harmless type: In addition to reducing the available space of the disk during infection, it has no other impact on the system. Confidentiality service is to protect the information transmitted in the network to prevent attacks. Choose different confidentiality levels for the information through different security requirements for the transmitted information. Generally speaking, it is necessary to protect user data transmitted between two users over a period of time. Confidentiality services must prevent information from being intercepted and analyzed during transmission, which requires the system to take necessary measures to prevent attackers from detecting the source address, destination address, and length of the information flow.

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