network security protocols

Article Title: security enhancement measures use Openssh to build a secure network. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　 Implementation steps: On each server 1. install the software package: Openssh-3.4pl-sol7-sparc-local Openssl-0.96d-sol7-sparc-local Zli

Network equipment is also an important device in the network boundary. It is the main road to the entire data center and cannot cause any loss. In the past two days, the Nexus network equipment was reinforced with simple security measures, the main operations are summarized as follows: 1. Create a read-only account on

The following points must be taken into account for network security: User identity authenticationAre you sure you want to contact me? Ensure content confidentialityAnd cannot let others know what we are talking about. Ensure content integrityEnsure that the information I receive is the information sent by the other party, rather than forged by others. Cryptography Symmetric Key Algorithm Des

methods that threaten Network Security 1. Data plane The primary attack on the data plane is DoS (Deny of Service) attacks, which may take many forms for different protocols. (1) LAND attack. LAND attacks use vulnerabilities in TCP protocol implementation in some systems to create TCPSYN packets. The source IP address and TCP port number of these packets are the

For netizens, a variety of potential threats may come at any time. In these threats, often is "Ming gun good hide, stabbed difficult to prevent", network virus, hacker tools we pay more attention, the loss is relatively few, but for the use of special means to spy on personal privacy, but have overlooked. Clearly has caused the privacy of the leak, but no knowledge. Therefore, what kind of measures to ensure personal

/wkiom1rmmnxyzydcaablks02sh0246.jpg "/>For example, we want the root user to automatically empty the history command each time the logout exits, and a "history–c" command can be added to the. bash_logout file in the user's home directory.650) this.width=650; "title=" 3.jpg "alt=" wkiol1rmmwwrstlqaabomruumaa679.jpg "src=" http://s3.51cto.com/wyfs02/M01/ 4d/1f/wkiol1rmmwwrstlqaabomruumaa679.jpg "/>5. Set Terminal Automatic logoffWhen a user logs in through a terminal, a tmout variable can be set,

64, the network security under the Winows NT4.0 Hot Network In the network multiuser environment, the system security, the permission setting is very important, Windows NT 4.0 provides a successful security secrecy system under t

authentication is the basic technology for implementing user security protection. A vro can use a variety of user access control methods, such as PPP, Web login authentication, ACL, and 802.1x protocols, protects access users from network attacks and prevents access users from attacking other users and networks. The Security