ccna exam london

ccna exam london

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Passive defense protection technology mainly includes firewall technology, intrusion detection system, security scanner, password verification, audit trail, physical protection and security management. 8.1.3 Defense measures Figure 9.4 Working steps of dynamic authentication of SET system 2. Trust chain and blacklist issuance (4) Exit the registry editor and restart the computer. A Trojan horse is an illegal program included in a legal program. It is a hacker program that does not destroy data itself. Hackers use it to remotely manipulate the victim computer; general Trojan horses have two execution programs on the client and server. Trojan horse programs can be placed in various ways. filter Authorized persons leak information to unauthorized persons for profit or carelessness 7. The routing control mechanism (the Routing Control Mechanisms) nameif hardware_id if_name security_level 1986 year, in Lahore, Pakistan (Lahore) , BASIT (Basit) and Amjad (Amjad) two brothers through the camp with a IBMPC small shops and compatibles. They wrote the Pakistan virus, or Brain . It spread to all over the world within a year. C = ECB(DCA( P )) 1000auto -auto-negotiation full / half duplex Gigabit Ethernet. For network interface speed, auto is the only possible FDDI 1 (fddiX) value Windows 2000 : There is a backup in the SYSTEM32\dllcache directory, copy it to the SYSTEM32 directory. Or you can copy these files from other machines that have not been infected with viruses. Transmission direction (1) Observe the basic structure of the firewall and describe the various interfaces and functions of the firewall. An example of when to use the conduit command is to use ICMP messages to test connectivity through the PIX . In order to allow the echo request from outside (Ping) through PIX firewall must be configured to a pipe (Conduit) . Moreover, external users must have a target IP address available. You can use the static command to map this information on the PIX firewall. 6.6.4 Checking and killing FunLove virus (3) Master the functions and realization of each module of the firewall. Cryptography is one of the most effective technologies for network security. Encrypted network can not only prevent unauthorized users from eavesdropping and accessing the network, but also one of the effective methods to deal with malicious software. (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,ccna exam london, for detailed analysis. The public key algorithm will become the mainstream of the shared software encryption algorithm because of its good security (of course it is still used by the author ) . In RSA example, when N is the number of bits is greater than 1024 after the ( strong prime number ) , now considered difficult to decompose. The first version of the cover letter virus uses the security loopholes in the Microsoft mail system to automatically run attachments, spreads through e-mails, and has a very strong infectious ability. Since the email contained a message in English "I must find a job to support my parents", it was named "cover letter" virus. Infect executable files, time search for all files on the computer, spend a lot of system resources source computer to run slowly until the final cause paralysis. Meet monthly 13 will automatically attack when the day, all the system files longer a times, wasting a lot of hard disk space.

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