ccna industrial

ccna industrial

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The development of the Internet has exposed weaknesses that are vulnerable to attack. In response to hacker attacks,ccna industrial, it is necessary to use intrusion detection and active defense (IDS) , real-time interactive monitoring and active defense. (4) very dangerous type: this type of virus removal programs, destroy data, clear the system memory area and operating systems weight information wanted. (5) Packet filtering: The device selectively controls and operates data flows ( packets ) entering and leaving the network . It is usually to filter packets from the external network to the internal network. Users can set a series of rules to specify which types of data packets are allowed ( or denied ) to flow into ( or flow out ) the internal network. (1) Master the methods of discovering and removing shockwave viruses. After the installation is complete, you are prompted to restart the computer to use the firewall, select the "Yes, restart the computer now" radio button, and click the "Finish" button to restart the computer ( as shown in Figure 5.11 ) . (2) Mutual isolation of information: the isolation of order information and personal account information. When an order containing cardholder account information is sent to the merchant, the merchant can only see the order information, but not the cardholder's account information. E-mail is transmitted at the speed of electronic streaming, which is very fast. The user ( sender ) sends it to a friend ( recipient ) in the United States in Shenzhen , and the other party can receive it in a few minutes. The Code Red worm can spread quickly, and cause a wide range of access speeds to decrease or even block. Code Red worm damage is primarily caused by tampering with web pages, to other servers on the network attacks, the server can be attacked again, following continued attacks on other servers. From the 20th to the 27th of each month, an attack was launched to the specific IP address 198.137.240.91 (www.whitehouse.gov) . Unlike other viruses, Code Red virus does not write virus information to the hard disk of the attacked server. It just resides in the memory of the attacked server, and uses the network connection of this server to attack other servers.

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