ccna v7

ccna v7

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4. Non-repudiation foreign_mask 5) Non-repudiation of transactions 1) Fingerprint recognition technology 4) Management mode Windows 98 : In the compressed package Win98_35.cab , unzip it to find Riched20.dll and copy it to the SYSTEM directory. ③ Select /C , select delete, select /D , select delete. Encryption key PK and decryption key SK . The encryption key is public, and the encryption and decryption equation is: PK = { e , n } , SK (1) Web server: IIS 6.0 , IP address is 192.168.20.124 , computer name is SZY . Note that these rules are not mutually exclusive, so order should be considered. In addition, the rules suggested here are only for discussing principles, so they are not optimal in form. Figure 8.1 "Super Rabbit IE Repair Expert " window The passwordless entry and hidden channel of the operating system ( formerly a convenient entry for system developers ) are also channels for hackers to invade. This Trojan may be the most simple and ancient Trojan horse, its only function is to open 21 ports, waiting for the user even then. Now the new FTP Trojan also adds a password function, so that only the attacker knows the correct password and can access the other party's computer. Use range 10 1024 to allow or deny access to only ports 10 ～1024 , all other ports are not affected: conduit deny tcp any range 10 1024 any 3) Turn on the computer and enter the pure DOS environment Source host port Operational safety refers to the continuous and normal operation of the protection system. DH only applies to key exchange. The security of DH algorithm comes from the difficulty of computing discrete algorithm in a limited field. 2. SMTP processing 2) The basic principle of monitoring in LAN In the famous AT&T Bell Labs in the United States , three young people play a game boringly after work: they write programs that can eat other people's programs to fight each other. This is called "Core War" (Core the WAR) game, further computer viruses concept of "infectious" reflected. (3) Once the firewall fails,ccna v7, restarts or crashes, it should completely block the connection of internal and external network sites to prevent intruders from entering. The control method of this security mode is to control the startup of the network interface by the firewall security mechanism. The failure mode of this firewall is called "failure - safe " mode. 9) Bundled in the startup file So far, the defense against DDoS attacks is still relatively difficult. First of all, this attack is characterized by the use of The harm that these viruses cause to the system is not because of dangerous calls in their own algorithms, but because they cause unpredictable and catastrophic damage when they spread . Errors caused by viruses caused by other programs can also damage files and sectors, and these viruses are also divided according to their ability to cause damage.

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