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  • 6. Encrypted communication and virtual private network (2) Master the implementation of the ban on designated sites, applications, designated addresses, and designated ports. 4. The characteristics of Trojan horses (2) Which three subsystems does the key management module of the Ministry of Construction have ? If both network users transmitting confidential information use a symmetric key cryptosystem ( such as DES) , both DES algorithm works as follows: The Mode is encrypted, with the Key to the data Data is encrypted, to generate (8) The stealth of various attack techniques is enhanced, which cannot be identified by conventional means. (5) Enter the ministry-level business decentralized code, and write the business decentralized code into the ministry-level business master control key fob. The ministerial-level business master control key card stores the business decentralized code in ciphertext binary format. The netmask of global_ip . global_mask is a 32 -bit dotted decimal number consisting of 4 parts , such as . Use 0 on a binary bit to specify a binary position that will be ignored. If needed, you can use subnets. If we use 0 for global_ip ,ccna vpn pdf, then In the 1960s , a living software appeared that could replicate itself. At that time, the programming idea of Living ( self-replication ) was very popular. Since then, the challenging development of virus-type programs has spread widely in academia. (1) Disconnect the network to avoid repeated infections and other machines. 3) Array boundary check (2) Master the relevant configuration commands. Broadly speaking, all related technologies and theories that involve the confidentiality, integrity, availability, non-repudiation, and controllability of information on the network are the research fields of network security. Figure 3.1 NDIS component diagram 3.5 Key management and exchange technology (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. WWW server and E-mail server etc. ) are placed in the surrounding network, which also reduces the security risk of the internal network. The structure of this firewall is shown in Figure 5.5 . This structure is in line with the five requirements we put forward and should be the safest precaution mode. The Application Gateway uses special software to forward and filter specific application services, such as Telnet and FTP service connections. This is an agency services, agency services technology adapted to the application layer, which consists of a high-rise should be used as a proxy gateway, typically borne by dedicated hardware. The proxy server uses the services provided by the internal network under the control of external applications . In other words, it only allows proxy services to pass, that is, only those services that are considered " reliable " are allowed to pass through the firewall. The application layer gateway has functions such as registration, log, statistics, and reporting, and has a good audit function and strict user authentication function. The application layer gateway has high security, but it needs to provide a special proxy service program for each application.

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Latest Cisco CCNA 200-301 Dumps

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Latest Cisco CCNA 200-301 Exam Information

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Exam Code: 200-301

Certification Provider: Cisco

Certification Exam Name:Cisco CCNA

Update Date: May 24,2022

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