linux security best practices

#more/var/log/secure grep refused to check it out. 2. Limit the number of programs with SUID permission flags, the program with that permission flag running as root is a potential security vulnerability, of course, some programs must have the logo, like the passwd program. 3.BIOS security. Setting the BIOS password and modifying the boot order prevents booting the system from the floppy disk. 4. User pa

. User passwords are the most basic starting point for Linux Security. many users use simple 'password', which opens the door to intruders, although theoretically there is no uncertain user password, it can be used as long as there is enough time and resources. A good user password is a string of characters that can only be easily remembered and understood by himself, and should never be written anywhere. 5

BKJIA: Many Linux servers are not new machines just deployed. Professional Linux system administrators perform regular maintenance, IT technicians often need to take full responsibility for the security of their servers. If your server is intruded, not only is all sensitive information exposed, but the server itself may cause larger damage to attackers. To avoid

Linux Security Basics: network configuration commands and linux basic configuration commands 1. ifconfig view and configure network interface information(1) set an IP addressIfconfig eth0 192.168.0.1(2) temporarily disable or enable the NICIfconfig eth0 downIfconfig eth0 up(3) set the subnet maskIfconfig eth0 netmask 255.255.255.0(4) view the status of the first

deficiency of authentication and strengthen the security of Linux system.The way of 2.PAM authenticationPAM certification generally follows this sequence: service (services) →pam (configuration file) →pam_*.so. The PAM authentication first determines the service, then loads the corresponding PAM configuration file (located under/ETC/PAM.D) and finally calls the authentication file (located under/lib/

Linux has many advantages in terms of functionality, price, and performance. However, as an open operating system, it inevitably has some security risks. This article will tell you how to solve these hidden dangers and provide a secure operation platform for applications. It is also the most basic, common, and effective method.Linux is a Unix-like operating system. Theoretically, the design of Unix itself h

needFive, Linux physical securityPhysical security protection of the serverSet the password to grub, even if the attacker is physically in contact with the operating systemLocking the terminal with VlockVi. information collection of cyber securityNetwork host Survival TestPingNmapTelnetNetwork host survivability Test protectionInstall the firewall to screen out the ping test.Installs snort time to detect s

There is no absolutely secure system in the world. Even a stable Linux system is widely considered to have shortcomings in terms of management and security. We expect the system to work at minimum risk, which requires enhanced management of system security. Below,I will elaborate on the shortcomings of Linux in two asp

find users' phones, directories, and other important information. Therefore, many Linux systems cancel all or partially cancel these services to enhance system security. In addition to setting system service items using/etc/Inetd. conf, inetd also uses the/etc/services file to find the ports used by various services. Therefore, you must carefully check the port settings in the file to avoid

Basic techniques of Linux security management Chinese information position http://www.cnxxz.net Author: greenice Linux as an open source of the free operating system, with its highly efficient implicit quality, more and more users are welcome, and in the world continues to spread. It is believed that Linux will get big

Set the Linux security environment for running Java-general Linux technology-Linux programming and kernel information. The following is a detailed description. Enterprise Java expert Dennis Sosnoski elaborated on his point of view on how Java Server technology is suitable for Linux