best books on cryptography and network security

transaction. 　　8. Personal password Management To maintain a strict password management concept, the implementation of a regular replacement password, can be replaced monthly or quarterly. Never write your password on paper, don't use passwords that are easily guessed by others. 9, password grading Use a different password for different network systems, and use a more secure password for important systems. Never use the same password for all syst

I. The concept of a firewall In recent years, with the increasing number of ordinary computer users, the word "firewall" is no longer the agency of the server domain, most home users know to install a variety of "firewall" software for their own love machine. However, not all users are aware of the "firewall", some users even think that "firewall" is a name of the software ... What the hell is a firewall? Where does it work, and what's the role it plays? Check history

access from the outside and to prevent internal information from leaking out, but it cannot block illegal operations from within the network. It is based on predetermined rules to determine whether to intercept the flow of information, but can not dynamically identify or adjust the rules adaptively, so the degree of intelligence is limited. There are three types of firewall technology: Packet filter (packet filter), Agent (proxy) and state analysis (

) using symmetric encryption algorithms to address confidentiality (an important encryption method)Symmetric cryptography is like putting the rules of a common algorithm into a safe, and only getting the safe and safe keys to get the algorithm handbookAdvantages: The key encryption algorithm is very fast and solves the security problem of ordinary encryption algorithm.Disadvantage: The

wireless LAN standard. At the same time, this scheme has been reviewed and approved by the ISO/IEC authorized Authority (IEEE registry Authority. It uses a certificate mechanism based on the public key cryptography system to implement bidirectional identification between mobile terminals (MT) and wireless access points (AP. You only need to install a certificate to roam across different regions that cover the WLAN for your convenience. Services that

, it basically covers the content of the top, bottom, and bottom layers. With the help of IPS technology, you can build a three-dimensional Web Protection Network for Web servers. As we all know, firewalls and other devices focus primarily on the basic security of the network layer, rather than the application layer. For example, SQL injection attacks usually occ

through those vulnerabilities in the browsing client to execute programs or read and write files. Icon: Attack Client Host Man-in-the-Middle When an attacker is in a position where the communication between two machines can be observed or intercepted, the attacker can be considered to be in an intermediary way. Because most of the time the host transmits valuable information in clear text, attackers can easily hack into other machines. For the implementation of some public key

IOS advanced learning-Network-based data security, ios advanced I. Data Security 　　 1. terms: Key: A key is a parameter entered in an algorithm that converts plaintext to ciphertext or converts ciphertext to plaintext. Keys are classified into symmetric keys and asymmetric keys (you can also divide them into encryption keys and decryption keys based on their pu