new ccna security

new ccna security

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Any machine on the Internet, that is to say, network security faces the challenge of internationalization. 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 (2) The startup process of the Cisco PIX 515 firewall. (4) The sender uses the public key P B B of the recipient B to encrypt the symmetric key S K using the RS A algorithm to form a digital envelope D E , as if the symmetric key SK is installed in a public key encrypted by the recipient In the envelope. 3. Existence of Trojan Horse Program (3) After a virus is found, generally use anti-virus software to remove the virus in the file. If the virus in the executable file cannot be removed, it should generally be deleted, and then the corresponding application should be reinstalled. At the same time, we should also be virus-like copy to the Research Center of anti-virus software vendors, for detailed analysis. The operating system directory of the disk. Operation command set: Type C : 255.255.255.0 (5) Screen control: remotely simulate mouse and keyboard input ( equivalent to executing "control commands" in the command console 10full —— set 10Mb/s Ethernet full duplex communication 2. Confidentiality Some malicious sites, free or shareware, spam or other purposes in order to promote themselves to the seductive picture or click prizes as bait to trick users click on the page to hide malicious programs to modify the user registry, the IE tampering It's beyond recognition. The key exchange method specifies how to use a shared symmetric key in the data transmission between the client and the server. Among the above three types of certificates,new ccna security, the first two types are commonly used certificates, and the third type is used for more special occasions. Most certification centers provide the first two types of certificates. It is not common for certification centers to provide various types of certificates. IDEA encrypts information, while RSA is used to pass the session key. If classified according to the number of bits processed for each encryption, the encryption algorithm can be divided into serial ciphers and block ciphers. The former only encrypts one bit at a time, while the latter lists the information first If you want to see the real password, you need to use the command: ypcat passwd . (2) C safety level: This type of security can provide a prudent level of protection, and to provide users with the trial of actions and responsibilities meter capacity. Class C security levels can be divided into two categories : C1 and C2 . C1 system data separated by the user and to achieve secure wide purposes. The C2 system strengthens the adjustable and prudent control than the C1 system. When connected to the network, the users of the C2 system are respectively responsible for their actions, and this control is enhanced through the login process, security events, and resource isolation.

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Latest Cisco CCNA 200-301 Dumps

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