cisco ccna 5 chapter answers

cisco ccna 5 chapter answers

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While web services facilitate users to publish information, they also bring insecurity to users. Especially in the Standards Association proposed extension on the basis of certain services, while providing interactive information to the user, but also makes the Web the foundation has added a new insecurity. The eCertCA/PKI system can be logically divided into the following subsystems: (3) data confidentiality (the Data Confidendance) : mainly to protect the security of data exchange between systems. 1. Introduction to Kerberos protocol 4) Program pointer integrity check (3) Click the "Settings" tab on the main interface of Kaspersky Anti-Virus , and open the "Settings" tab ( Figure 6.33 7. Root certificate metric 10) Trusted recovery 3) land attack The realization method of digital signature (4) Remove sharing. After being invaded by Nimda virus, some new shares will pop up in the system, such as the sharing of C drive, D drive, etc., and their sharing attributes should be removed. 1) Definition of scanner This is a special case of choosing plaintext attacks. The cryptanalyst can not only choose the encrypted ciphertext, but can also modify this choice for the previously encrypted result. Select a smaller plaintext block, and then select another plaintext block based on the result of the first block, and so on. In the HTML text, a program module with a certain function is formed. half closed 0:10:00 udp 0:02:00 (4) Restart the computer immediately after killing the virus. (3) The virus will slow down the computer. The firewall is a security mechanism that adds another layer of parameter network to the host filtering structure, so that there are two layers of separation between the internal network and the external network. The internal and external routers of the parameter network connect the internal and external networks respectively, as shown in Figure 5.4 . The scanner is a remote or local host automatically detect security vulnerabilities procedures, you do not leave marks by using the scanner traces found various remote servers TCP allocation and port services provided and their version of the software! This can indirectly or intuitively understand the security problems of the remote host. Non-repudiation includes: 4) Smurf attack Web server construction based on SSL protocol (1) Create a digital certificate. tapping 1. High-strength encryption and authentication Encryption is performed, and then the label and session key are passed to user A. The result of encryption can ensure that only user A can get this information, and only user A can use this session key to talk to user B. Similarly, KDC will use only the session password has KDC key encryption and user B knows, and the session key to the user B. ① Run regedit . Level 4 and Level 5 operating systems must be built on a well-defined formal security policy model. In addition, you also need ip address command parameters / options CD D:\ 5.4.3 Host filtering firewall structure (4) Alice calculates K = Yx mod n . Ignore any errors in it. Wei threat Replace 0.0.0.0 . An example of using 0 to represent 0.0.0.0 is shown below. (4) Directory Server Support Module (Directory Service the Component) . Level 4 and Level 5 operating systems must be built on a well-defined formal security policy model. In addition, you also need (4) follow the example of EDI trading form, requires the software to follow the same protocol and message format, the software developed by different manufacturers have compatibility and interoperability functions, and can run on different hardware and operating system platforms. (5) There is a text message hidden in the virus body: I just want to say LOVE YOU SAN!! Billy gates why do you make this possible? Stop making money and fix your software!! (8) Be sure to back up the hard disk boot area and the main boot sector, and frequently back up important data to take precautions. IE is just a very crude FTP client tool. Firstly, IE 6.0 and lower versions do not support the PASV method; secondly, when IE logs in to FTP , the login information cannot be seen. When a login error occurs, the cause of the error cannot be found. When testing FTP , it is recommended not to use IE . 2. How the Trojan Horse Works A virtual operating environment is created, and users are restricted from accessing any resources other than the environment, as long as the sandbox is not exceeded, it is safe. Since the interception and encryption of data in this program are mainly carried out during the sending and receiving process,cisco ccna 5 chapter answers, it mainly introduces the processing of the data during the data sending and receiving process. Unprivileged mode (4) If the remote workstation is invaded by a virus, the virus can also enter the network server through data exchange during communication. Network viruses can be roughly divided into three categories: worms, Trojan horses and email viruses. Putting the following code in the < head> mark of the HTML code of the webpage can achieve the effect of completely blocking the right mouse button. Since this script calls a function when the right mouse button is pressed, it can be changed to many Kind of type. Even if you use the method of pressing the left button, then pressing the right button, releasing the left button, and then releasing the right button, it is impossible to crack.

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