Three classic LINUX firewalls

CommentsThe iptables command is used to filter packets and perform NAT Network Address Translation (Network Address Translation) as seen in man queries. This command has many applications, many applications on the network can be implemented.

Share several web site anti-Black Experience

Comments: I will share my experience on anti-black web site protection. For more information, see webmasters.1. Set strict PermissionsOnly write and read permissions are allowed for the upload directory, but execution permissions are not allowed.Set

How to set the computer screen to the color that can protect your eyes

Comments: We know that using a computer for a long time and staring at the screen will make the eyes very dry and tired, so it is now popular to set the computer to the color that can protect the eyes. We know that using a computer for a long time

How to view and modify the IP address of the Local Machine in vista

Comments: This article describes how to view and modify the IP address of your computer in vista. Step 1: Right-click the desktop"Network", Click"Attribute", The following"Network and sharing center". (Figure 1) Step 2: click"View status". (You

Required for home wireless router security settings

Comments: Wireless networks have become the first choice for home networking as broadband bandwidth increases by carriers. The common people really feel that wireless is really good! In addition, various manufacturers also try their best to make the

How to hide the nginx version number

Comments: Sometimes, to ensure security, we need to hide the nginx version number. This method is good. For security reasons, we decided to hide the nginx version number. If the version number is exposed, it is equivalent to telling someone about

Completely eliminate gggdu.com and fix the issue where IE cannot be searched.

Comments: I suddenly found that the search box of IE7 could not be used. I thought it was a problem with IE. I fixed the failure several times and re-installed IE8. As a result, I could not add a new search engine, in fact, you can use the Kingsoft

Use mcafee to build your own security server

Comments: After mcafee is used, it seems that its monitoring has nothing to say. It is really good to kill software, but it may be a bit difficult for new users to set up, however, if you only use the default settings, the security is a little low.

How to unlock password of a user on the McAfee VirusScan Console

Comments: If the user's unlock password on the McAfee VirusScan console is forgotten, you can take the following measures to solve the problem:Restart your computer, enter security mode, open the registry, find HKEY_LOCAL_MACHINE \ SOFTWARE \ McAfee

How to export mcafee rules to share the startup screen Removal Method

Comments: Mcafee8.5i Enterprise Edition custom rule export method + startup screen Removal MethodCustom rule export MethodOpen the Registry Editor.Find [HKEY_LOCAL_MACHINE \ SOFTWARE \ McAfee \ VSCore \ On Access logging \ BehaviourBlocking]Find

Encryption method to ensure the security of the email system

Comments: In recent years, espionage has become increasingly serious for companies. Therefore, it is very meaningful to deploy an encryption system to ensure that the hacker cannot decrypt anything from the intercepted messages, or to lose

Crack the discuz security question Algorithm

Comments: Today, my friend asked me if I could spare the answer to the discuz security question. Or crack, I have noticed a password before. I only remember that it was very short. I thought it was the MD5 obtained by substr, and finally I read the

How to encrypt PDF files on MAC systems

Comments: I often use different word processors and text editing software at work. Most of the documents I have written are generated using popular options (especially those commonly used by Windows users), that is, "Print-> Save as PDF ". In many

Writing to cainiao-Principles of reversible and irreversible encryption and decryption algorithms

Comments: Currently, many website passwords are encrypted using the MD5 method, which is irreversible. Therefore, it is impossible to restore the encrypted passwords based on the ciphertext. Here, the conversion process from plaintext to MD5

How software is cracked

Comments: Starting from this chapter, let's take a step-by-step study of the Crack software (80% readers passed down and are not saving the world... another 20% is looking for things that can be used to crack people nearby. Do not mention the three

Anti-Black + lock anti-overflow + password control CMD permission

Comments: As we all know, Microsoft's overflow vulnerability is really a basket, and overflow naturally requires the CMD permission, but if our CMD requires a password ...... Today, I will teach you how to prevent CMD attacks. CMD encryption is

Web. config local encryption and decryption BAT

Comments: Some users cannot use aspnet_regiis-pdf to decrypt the configuration file even if they log on to the server. Open the SDK command prompt that comes with. Net Framework.Encryption command:Aspnet_regiis-pe "connectionStrings"-app

Getting started with cracking (iii) ----- common methods for shelling

Comments: The shell has been connected together since it was added to the program. That is, the program is protected to prevent modification. That is, the shell wraps the program, the data of the original program is also compressed.What is Shell You

How can I forcibly crack the boot password of a desktop computer? Cracking Methods

Comments: Are you still worried about failing to start up after you forget your password? Are you still worried that you cannot open your computer without a password? This chapter provides a clever trick for you to easily unlock the boot password of

How to crack the webshell password of the TNTHK internal Edition

Comments: The following is a simple example of how to obtain the webshell backdoor password. We do not recommend that you destroy the webshell password. The result of your work is readily available to others. The following is a simple example of

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