Basic LINUX security management skills

Article Title: basic tips for LINUX security management. 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.

As a free open-source operating system, Linux is becoming more and more popular among users with its highly efficient and hidden quality. I believe that in the near future, Linux will be more and faster. Although Linux and Unix are very similar, there are still many important differences between them. For many system administrators who are used to UNIX and Windows, there are many new challenges to ensure the security and reliability of the Linux operating system. This article will introduce some basic Linux management security skills and hope to help you (very pleased ).

First, I want to start from the security configuration of the system. I personally think that an administrator must be able to make full use of the security mechanisms provided by the system and explore the potential of the system to efficiently and securely maintain the server. I am not totally opposed to using firewalls and other tools, but just like people, We can disinfect and wear masks, but we are not as good as ourselves as we are physically strong and have antibodies. Linux is a free operating system with fully open source code. It has great potential for development. Competent administrators can even adapt their own Kernels to meet the needs of excellent server work. Of course, here we will only talk about some basic but practical configuration skills.

　　I. ILO Security Settings

LILO is short for Linux Loader, which is the startup module of LINUX. You can modify the content in the "/etc/lilo. conf" file to configure it. Add the following two parameters to the file: restricted and password. These two parameters allow your system to require password verification when starting lilo.

Boot =/dev/hda

Map =/boot/map

Install =/boot. B

Prompt

Timeout = 00 # Set this line to 00. In this way, the system starts LINUX directly instead of waiting.

Message =/boot/message

Linear

Default = linux

Restricted # Join this line

Password = # Add this line and set your own password

Image =/boot/vmlinuz-2.4.2-2

Label = linux

Root =/dev/hda6

Read-only

Because the "/etc/lilo. conf" file contains a plaintext password, set it to the root permission for reading.

 

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