How to Use the chattr command to protect important files from being deleted (1)

There are many tools and methods available on the market to protect your files and folders, so as not to be accidentally deleted. The chattr command is one of them. This command line utility can change the file attributes on the ext2/ext3/ext4 file

Use FWTK to configure the Linux Firewall

FWTK is a set of tools used to establish and maintain internal network firewalls. It contains many independent components, most of which are proxy applications, such as telnet, FTP, rlogin, sendmail, HTTP, and X windows. Compared with similar

Packet Filtering Firewall Based on Linux System (1)

Chapter 2 router-based packet filtering FirewallThe general concept of 1.1 packet filtering Firewall1.1.1 what is a packet filtering firewall?The packet filtering Firewall uses a software to view the packet header that flows through. This determines

Easy System Recovery in Windows

Now I am happy to tell you that in Windows we are familiar with, Ghost functions can be easily completed-cloning hard disk partitions and even the entire hard disk! I believe you will find that from cainiao to masters, you only need a few

How to Ensure Linux user security (1)

The increasing expansion of Linux application scope has attracted more and more attention in terms of security. Security is a complex and extensive problem. Here we mainly focus on Linux User Account Security, especially how Linux system

Create a Secure Linux Server (1)

To create a Secure Linux server, you must first understand the meaning of the configuration files related to network services in the Linux environment and how to configure security. In Linux, the TCP/IP network is configured through several text

How to Prevent Users From Installing programs when browsing the Web Page

To control installation programs on the internet, you must configure the regional settings of IE browser. You can adjust the Internet Options in the tool menu. At the same time, you modified the Windows registry. However, to automatically change the

Linux security overview

As Linux is an open-source free operating system, it is welcomed by more and more users. With the continuous popularization of Linux in China, the Linux operating system has always been regarded as an enemy of Microsoft's Windows software system,

Security Enhancement measure using Openssh to build a security network (1)

Implementation steps:On each server1. install the software package: openssh-3.4pl-sol7-sparc-localopenssl-0.96d-sol7-sparc-localzlib-1.1.4-sol7-sparc-localprngd-0.0.25-sol7-sparc-localegd-0.8-sol7-sparc-local 2. Install the prngd and

How to capture users' emails to ensure information security

I. EnvironmentThe company's Internet Mail System is Exchange 5.5. Considering the security of NT and exchange, the system is not directly connected to the Internet, but placed in the LAN, using a SMTP forwarding host dual Nic, connected to internal

Use SRP to establish a Secure Linux Telnet Server (2) (1)

8) the PAM Authentication Module provides authentication information to applications through the PAM library.9) after the authentication is completed, the application has two options:Grant the required permissions to the user and notify the user.The

Linux permission and ownership model (1)

One user and one groupLet's take a look at the Linux permission and ownership model. We can see that each file belongs to a user and a group. This is the core of the permission model in Linux. You can view users and groups in the ls-l list:

Linux operating system intrusion instance

Once upon a time, I found a website, which is a regular intrusion. Well, its FINGER is on, so I compiled a SHELL and the aaa account tried zzzby the way, which is an online rule I found, that is, the length of the account is proportional to the

DenyHosts is the best way to prevent SSH Brute force cracking

My server has countless SSH failure attempts every day, and some boring people keep scanning. These people are really boring, and they are full of food, I have been looking for some software to scan the website, so we need to remember to set up a

Rogue software product: a good tool to clear rogue software

Mainstream anti-rogue software vendors and some professional security vendors have launched their own products for rogue software, and note that these software seems to be public welfare software, all of which are free of charge, you can choose to

Interpretation of Kingsoft's three core systems of "cloud security"

Bkjia.com comprehensive report: Kingsoft drug overlord "cloud security" is a security architecture for network-wide defense to solve the severe security situation on the Internet after the commercialization of Trojans. It consists of intelligent

Security Application Software or open source Microsoft (1)

The openness of the Internet makes Web systems face the threat of intrusion attacks, and building a secure Web system has always been the goal of people. A practical method is to establish a relatively easy-to-implement relatively secure system and

PHP 5.2.11 fixes Multiple Security Vulnerabilities

PHP is a widely used scripting language. It is especially suitable for Web development and can be embedded into HTML. Multiple Functions in PHP versions earlier than 5.2.11 have security vulnerabilities, which may allow remote attackers to cause DoS

How terminal auditing can better serve Intranet Security (figure)

When it comes to terminal audit, the common topic is what information can be recorded by terminal audit. However, if we think that terminal audit is monitoring and recording, we will go into the terminal audit misunderstanding. The real purpose of

Book a Spring Festival train ticket and watch out for phishing

What is the most popular? Of course, it is a variety of train tickets and plane tickets for returning home. When buying train tickets and air tickets for the Spring Festival, more people choose to book online tickets and phone calls instead of

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