Linux security tips (3) (1)

In this article, I will introduce Linxu's security mechanism to you. I am too fond of cooking and cannot write anything very deep)PAM MechanismPAM is a shared library that provides a framework and a set of programming interfaces to transfer

Monitor Linux Resource status through LoadRunner

When we use LR for performance testing, we often need to monitor the resource usage of the OS. For Windows systems, this work is very convenient. You can directly add the name or IP address of the machine to be monitored in the LR Resource

Use iptables to set some security protection functions (2)

Below are some simple rules for setting iptables. For more information, see. (It has nothing to do with NAT)# Mount related modules modprobe ip_tablesmodprobe ip_conntrackmodprobe ip_conntrack_ftpmodprobe ip_conntrack_irc # Resetting

Use iptables to set some security protection functions (3)

Setting to prevent sync flood attacks: iptables -N synfooldiptables -A synfoold -p tcp --syn -m limit --limit 1/s -j RETURNiptables -A synfoold -p tcp -j REJECT --reject-with tcp-resetiptables -A INPUT -p tcp -m state --state NEW -j

Linux security (1)

This article is intended for linux administrators, fans, and colleagues who are very concerned about linux security. I hope it will be helpful to everyone and I will not talk much about it. Let's go to the topic.Before talking about security

Authorize web servers for secure database access

Allowing Web users to access the database is a very fine-grained task and requires careful consideration.TechRepublic member E Spigle recently raised the following question on Q & A forum of TechRepublic Technical:We are working on a job to convert

Check whether a simple Trojan exists in the system.

How can I check if a system contains a trojan? Here, we only illustrate some simple Trojans:1. Start the task manager and check whether there are any unfamiliar processes. Record them and do not touch them for the time being.2. Start the Registry

Security Research: Network listening Technology in Linux (2) (1)

Analysis on the monitoring of data frames over EthernetData frames over Ethernet mainly involve TCP/IP protocols. The following protocols are analyzed: ip, ARP, RARP, and IPX, with emphasis on IP and arp, these two protocols are the basis of most

Learn how to apply firewall mechanisms in Linux

PrefaceIn recent posts and discussions with the QQ group, I found that many netizens have encountered problems because of improper use of single-precision/double-precision values. So I want to talk about this topic.Single-precision and

Backdoor technology and rootkit tool-Knark Analysis and Prevention (2)

Iv. Installation and Use of the Knark Software PackageThe core software of this package is knark and c, which is a Linux LKM (loadable kernel-module ). Run the "make" command to compile the knark software package and use the "insmod knark" command

Backdoor and log tools in Linux (1)

After attacking the Linux system, many intruders often get lost. Another reason is that the technical requirements are higher. Next, let's take a look at some common classic tools. 1. Extend from here: backdoors and connection tools 1)

Bastille Linux: Make your machine stronger

Q: When you install Linux on a machine, can you harden your machine to reduce the risk of being attacked? Or, if you already have a considerable number of machines, how can you execute consistent configurations on them?Answer: Of course it is

Linux Security Basics SMIT (1)

This article describes the SMIT tool and how to use it. System Management Interface tool SystemManagementInterfaceTool, SMIT) is an interactive application that can be used to simplify AIX? All aspects of system management. After learning this

Use LiveCD to restore Compromised systems (1)

Do you want to evaluate Linux without having to go through lengthy system installation and configuration processes? Does the system have integrity and restore lost data? The Helix and Plan-B packages will leverage the magic of LiveCD to help you

Use Linux firewall to defend against hacker attacks

Firewalls can be divided into several different security levels. In Linux, because there are many different firewall software options, the security can be low and high, and the most complex software can provide almost no penetration protection

Top 10 causes of Web Attacks

Web AttacksThe reason for being exploited by hackers is as follows: 1. Desktop Vulnerabilities Internet Explorer, Firefox, and Windows operating systems contain many vulnerabilities that can be exploited by hackers, especially when users do not

Reasons for website Trojans

Background of website Trojans Statistical Analysis on the types of Web service programs used by the 623 Trojan-infected websites detected by CERNET and the types of scripting languages used to compile webpages: Graph script language and service

Optimization of file caching technology under Web2.0

Bkjia.com Comprehensive Report]Web 2.0 is a new internet approach. Through Web Applications, it facilitates information exchange and collaboration between people on the Internet. Its model is user-centered. Typical Web 2.0 websites include BBS,

Summary of simple WEB Security Settings

Server 1. First, the NTFS format is required, and the permissions of users and other users are reduced. If the disk in FAT32 format has no permission settings, there will be no security. 2. Second, the patch should be complete. Otherwise, if a

Web security gateway Overview: Best deployment method (1)

Web security gateway can significantly improve the overall security status of an enterprise, but it is not a product that is "deployed immediately forgotten, the deployment, configuration, and maintenance modes of the Web security gateway affect the

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