ccna 1 cisco

ccna 1 cisco

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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. 1.6.2 Information Security Protection Technology (2) Find if there is Flcss.exe file, and run the command as shown below. Circuit level gateway (Circuit Gateway) implemented at the transport layer of the network access control policy, is the inner and outer primary network to establish a virtual circuit to communicate between a machine equivalent to the firewall to open a hole directly transmitted, unlike should , as can be closely controlled by the application layer and layer firewall. The solution is as follows: 5) Threats posed by ActiveX controls It refers to the characteristics of non-modification, non-destructive and non-loss of information in the process of transmission, exchange, storage and processing, that is, to maintain the originality of the information so that the information can be correctly generated, stored, and transmitted. This is the most basic security feature. (2) Randomly select a number d that is relatively prime to φ ( n ) , requiring d < φ ( n ) . Figure 6.33 "Settings" tab (3) Tampering: The receiver intentionally tampered with the received information. 2. Analyze the vulnerability and security flaws of computer networks. 9) Rebound port type Trojan horse (11) Start : Start scanning and cracking. 6) Proxy Trojan Horse 4) Disguised in ordinary documents 7.4.1 Network monitoring example (2) Record various password information: including power-on password, screen saver password, various shared resource passwords and most of the password information that appeared in dialog boxes, and users are allowed to expand this function by themselves in versions above 1.2 , 2.0 above version of this at the same time also provides keystroke recording function. Determine the connection speed. Enter auto so that the PIX firewall can automatically sense the required speed of the device . SET is a credit card-based payment agreement for transactions on the Internet. It is a standard for the transmission of authorized business information . It uses the RSA cryptographic algorithm, uses a public key system to authenticate both parties in communication, and uses standards such as DES The cryptanalyst has some message ciphertexts, and these messages are all encrypted with the same encryption algorithm. The task of the cryptanalyst is to recover as much plaintext as possible, or it is better to be able to deduce the key to encrypt the message,ccna 1 cisco, so that the same key can be used to solve other encrypted messages. outbound 10 deny 204.31.17.11 255.255.255.255 www tcp apply(inside)10 outgoing _dest // ′www.***.com/, ′*** 网 ′)}} document.onmousedown=click ＜ /script> The security system structure of the network firewall is basically divided into five types: filter router structure; dual-homed host structure; host filter structure; filter subnet structure; sling structure. (9) Single User : A user name, which means to know that there is a user name on FTP , such as Guest , to get mtu inside 1500 4. Diversity (6) Information about the name of the certificate user and its public key. There are three types of digital certificates. low There are many tools for developing drivers. This solution uses the driver development tools from NuMega When Worms.Nimda runs, it will also search for local Htm/Asp files, put the generated poisonous emails into these files , and add JavaScript scripts. In this way, whenever the web page is opened, it will automatically open the infected readme.eml . (10) TGS (Ticket Granting Server) : distributed to end users for the purpose Ticket server, users of this Ticket to provide services to their requirements server to prove their identity. In terms of implementation, AS and TGS are actually completed by the same program, because their implementation mechanisms are not much different, except that they use different keys when encrypting the issued Ticket (AS uses the user’s key, And TGS uses the session key ) .

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