ccna and security+

ccna and security+

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The static command creates a static mapping between a local ( internal ) IP address and a global ( external ) IP address, so that (1) Internal employees are not restricted from accessing the Internet. For embodiments . 5 selectable security services, the ISO 7498-2 and specifically proposes the following 8 based security mechanisms, which 8 classes may operate as a basic network information security mechanism. To close this malicious sharing, first go to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows 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,ccna and security+, when N is the number of bits is greater than 1024 after the ( strong prime number ) , now considered difficult to decompose. 4) Analyze system logs regularly highest In network communication, the security of digital signatures must have verifiability, non-repudiation, non-forgeability and non-reusability. The application of quantum technology in cryptography is divided into two categories: one is the use of quantum computers to analyze traditional cryptosystems; the other is the use of single-photon uncertainty principle to achieve key management and information encryption at the fiber level. That is quantum cryptography. Large scale quantum computers is equivalent to a parallel computing system over the traditional sense, in a few seconds using a quantum computer can decompose the bell the RSA 129 public key. According to the development of the Internet, the all-fiber network will be the development direction of network connections in the future. The use of quantum technology can realize the traditional cryptosystem, complete key exchange and information encryption at the fiber level, and its security is based on Heisenberg 's uncertainty In principle, if an attacker attempts to receive and detect the information ( polarization ) of the information sender , it will cause a change in the quantum state. This change is irreversible for the attacker, but can easily Detect whether the information is under attack. At present, quantum encryption technology is still in the research stage ( in a leading position in our country ) , and the effective distance of its quantum key distribution QKD on the optical fiber cannot meet the requirements of long-distance optical fiber communication.

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