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What are the safety rules to prevent computer virus infection?

1. Use genuine software. Due to the high cost of using genuine software, most companies will choose to use pirated software, but these pirated software may contain malware and viruses. The code they copy from genuine software will also have loopholes, allowing criminals to easily crack the security license of pirated software, steal data, implant viruses, and eventually paralyze the entire system. 2. Update the operating system regularly. The operating system manages the hardware and software resources of the computer system. Once infected with a virus, the system will crash. To combat the ever-evolving viruses, developers have built in anti-virus software, so by regularly updating the operating system, viruses can be kept away. 3. Install anti-virus software. Anti-virus software can not only resist and prevent threats such as Trojans and viruses, but

May 15, 2023 am 09:10 AM

计算机

How to configure the backend RS in lvs-dr mode

1.with lo unlocked vipipaddradd192.168.50.246/32devlolabello:02.enabled arpecho1>/proc/sys/net/ipv4/conf/lo/arp_ignoreecho1>/proc/sys/net/ipv4/conf/all/arp_ignoreecho2>/ proc / sys / network / ipv4 / conf / lo / arp_announceecho2 > / proc / sys / network / ipv4 / conf / all / arp_announcer

May 15, 2023 am 09:04 AM

lvs-drrs

WebView File Domain Origin Policy Bypass Vulnerability Example Analysis

Basic knowledge of the Android architecture. Kernel kernel layer vulnerabilities are extremely harmful. The versatile drivers are numerous and complex, and there may also be many vulnerabilities. Libraries system runtime library layer system middleware provides runtime libraries including libc, WebKit, SQLite, etc. AndroidRunTimeDalvik virtual The machine and kernel library FrameWork application framework layer provides a series of services and API interfaces Activity Manager Content Provider View Resource Manager Notification Manager Application Application Layer System Application Home Screen Home, Contact Contact, Phone Phone, Browser Others Application developers use the application framework layer to

May 15, 2023 am 08:22 AM

filewebview

What is NMAP's port scanning technology?

What is a port? Comparing network equipment to a house, then the ports are the entrances and exits to and from the house (the strange thing is that this house has too many entrances and exits, as many as 65,535). These entrances and exits are used for data to enter and exit the network equipment. The purpose of setting ports is to achieve "one machine for multiple purposes", that is, to run multiple different services on one machine. So when multiple programs are running on a machine, how does the machine distinguish the data of different programs? This task is handled by the operating system, and the mechanism used is to divide 65535 different port numbers. When the program sends information, it will bring the port number in the data, and after receiving the data, the operating system will divert the information to the program using the port number in the current memory according to the port number. Port points

May 14, 2023 pm 11:43 PM

nmap

What are the basic knowledge points for web testing?

1. Web application applications have two modes, C/S and B/S. C/S mode, that is, Client/Server (client/server) mode, this type of program can run independently. B/S mode, that is, Browser/Server (browser/server) mode, this type of program needs to be run with the help of a browser. Web applications are generally in B/S mode. A Web application is composed of various Web components (webcomponents) that complete specific tasks and displays services to the outside world through the Web. In actual applications, Web applications are composed of multiple Servlets, JSP pages, HTML files, image files, etc. Understand web applications, the

May 14, 2023 pm 11:19 PM

web

What are the basic features of bash

#Command alias of basic features of bash In the shell process, bash can set an alias for the command itself or the command plus options. After setting, you can directly enter the alias to call its function. The way to set the command alias is: ~]#aliasNAME=COMMAN. The way to revoke a command alias is: ~]#unaliasNAME The way to view the command aliases that have been set in the current bash is: ~]#alias Note 1: The life cycle of the command alias set in this way is only the current shell process. Exiting the current shell and logging in again will no longer work. If you want it to take effect automatically after the shell starts, you need to set the bash environment variable related configuration file. Note 2: If the command alias and command

May 14, 2023 pm 11:07 PM

Bash

How to analyze APT Trojans based on the threat intelligence cycle model

About the Threat Intelligence Processing Cycle Model The term "Threat Intelligence Processing Cycle" (F3EAD) originates from the military. It is a method for organizing resources and deploying troops designed by the US Army's commanders at all levels of the main combat arms. The Network Emergency Response Center draws on this method and processes threat intelligence information in the following six stages: Threat Intelligence Processing Cycle Application of the F3EAD Threat Intelligence Processing Cycle Model Step 1: Find a date on a certain month and deploy it on the partner's public cloud server The "Onion" system alarm found a suspected Trojan horse program, so the emergency response team quickly started the emergency response process: stakeholders and others gathered the group with one click and called in. The victim system is isolated for investigation. The security system and audit logs are exported for traceability analysis. Preparation of business system architecture and code-related information to analyze intrusion breaches and victims

May 14, 2023 pm 10:01 PM

apt

How to analyze juniper switch ex2200 configuration and simple commands

qnqy-dpf-jrex2200-01#show|displaysetsetversion12.3R11.2setsystemhost-nameqnqy-dpf-jrex2200-01setsystemtime-zoneAsia/Shanghaisetsystemroot-authenticationencrypted-password"$1$7RMyTyeG$tLGAToBggMFhcOw85Ts.EP/"setsystemloginuseradminuid2000set

May 14, 2023 pm 09:58 PM

交换机juniper

How to fix net use 1231 error

The company has a server, and I was able to log in to it normally using netuse. After removing the virus today, I found that I couldn't log in to it, but other employees in the company were able to log in to it normally, so the problem must be on my own machine. The error reported was a netuse1231 error. I searched on Baidu and a lot of people said it was caused by netbios, but they all failed. Fortunately, I found a foreign website and found the problem. Now I will record the problem here. , the reason is that the Microsoft network client is turned off. If this option is selected, netuse will succeed normally!

May 14, 2023 pm 09:10 PM

net use 1231

How to Reproduce Weblogic SSRF Vulnerability

1. Use docker to build an environment. Docker installation and environment building tutorial: https://www.freebuf.com/sectool/252257.html Access port 7001 2. Vulnerability reproduction steps 1. Vulnerability page/uddiexplorer/SearchPublicRegistries.jsp 2. Check Check out IBM and find that it is a connection, so there may be ssrf. 3. Use burpsuite to capture packets and click Search. 4. Modify the connection of operator parameters. 5. Access results. Accessing a non-existent port returns couldnotconnectoverHTTP.

May 14, 2023 pm 08:04 PM

SSRFweblogic

How to implement a mapped array without map() in Javascript

For mapping arrays without map(), let’s first introduce the map method. The map() method returns a new array. The elements in the array are the values of the original array elements after calling the function. It will process the elements in sequence according to the order of the original array elements. Note: map() does not change the original array, nor does it detect empty arrays. Let's implement an array mapping without map: //array.map(function(currentValue,index,arr),thisValue)varplants=[{name:"Saturn"},{name:"Uranus"},{

May 14, 2023 pm 08:01 PM

JavaScript

How to recover Micro officescan quarantined deleted files

1. Enter the actual installation directory of officescan. 2. Enter VSEncode.exe/U and press Enter. 3. Select the file you want to restore and click Restore.

May 14, 2023 pm 05:46 PM

Micro officescan

How to reset the recursion limit in Python

Resetting the recursion limit Python limits the number of recursions to 1000. We can reset this value: importsysx=1001print(sys.getrecursionlimit())sys.setrecursionlimit(x)print(sys.getrecursionlimit())#1->1000#2- >1001

May 14, 2023 pm 05:04 PM

Python

How to use javascript to implement custom event functions

Overview Custom events are hard to come by? Why is it difficult for custom events to come in handy? Because js was not developed in a modular manner and rarely collaborated. Because the essence of an event is a communication method and a message, only when there are multiple objects and multiple modules, it is possible to use events for communication. Now with modularization, custom events can be used to collaborate between modules. Where can I use custom events? The essence of an event is a kind of message, and the event pattern is essentially the implementation of the observer pattern. So wherever the observer pattern is used, the event pattern can also be used. Therefore, if: 1. A target object changes, multiple observers need to adjust themselves. For example: I need element B to be displayed after element A is clicked.

May 14, 2023 pm 04:04 PM

JavaScript