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What are the common problems in web performance testing?

What are the common problems in web performance testing?

1. I am currently studying JMeter. What should I start with in terms of performance in the early stages? Both Jmeter and LR are currently the preferred tools for performance testing. If you have a learning background in LR, you will get started quickly with Jmeter, focusing on understanding the concepts of threads and processes. The process is similar to that of LR. If not, from an introductory perspective, I suggest you first understand the concepts of common network protocols and operating system threads and processes. Java is ideal for Jmeter, and you can consider understanding some programming basics. PS: In fact, if you use Jmeter to learn the interface test first, you will have a better understanding of performance. 2. What preparations do I need to prepare if I am a computer hardware professional with zero foundation and want to switch to this industry? The computer hardware already possesses basic computer knowledge, and it is necessary to transfer the software

May 26, 2023 am 11:22 AM
web
What is the onion mode proxy of SQLMAP?

What is the onion mode proxy of SQLMAP?

Because it is necessary to conduct penetration testing on external websites, most websites have access frequency control. Once this frequency is exceeded, the IP will be banned directly. Especially when SQLMAP is running, it is even more "aunty red", and an error is reported and exited before SQLMAP is finished running. So I started to study the proxy mode of SQLMAP. SQLMAP has two proxy modes, one is a normal proxy (HTTP proxy) and the other is an onion proxy. I originally wanted to write about the application of ordinary agents, but Baidu saw that this article was detailed enough and stopped talking nonsense. Sqlmap extension - External IP proxy pool implementation Let’s focus on the onion proxy. At the beginning, when onion was used directly for injection, there was no “aunt red” report. Later, as the number of penetrated websites increased,

May 26, 2023 am 09:56 AM
sqlmap
How to encrypt Android app

How to encrypt Android app

one. What is Android interface hijacking? Interface hijacking means that in the Android system, malware monitors the running of the target software. When it detects that the current running interface is a specific interface of a monitored application (usually the login or payment interface), a forged pop-up Phishing page, thereby inducing users to enter information, ultimately stealing the user's privacy (maliciously stealing user account number, card number, password and other information), or using a fake interface to commit phishing fraud. two. Common attack methods: 1. Monitor the system Logocat log. Once the Activity interface switching behavior is detected, the attack will be carried out and the fake Activity interface will be covered to implement deception. 2. Monitor the system API. Once the malicious program monitors the AP of the relevant interface,

May 26, 2023 am 08:47 AM
Android
How to use the Build Events feature to perform code replication

How to use the Build Events feature to perform code replication

The TAG security department disclosed a social engineering attack using social media such as Twitter to target security researchers engaged in vulnerability research and development at different companies and organizations. After analysis by NSFOCUS Fuying Lab, it was confirmed that the incident was targeted by the Lazarus organization. A targeted cyber attack in the cybersecurity industry, and speculation that it may have deeper attack intentions and actions. M01NTeam, the attack and countermeasures technology research team of NSFOCUS Technology, also conducted a comprehensive analysis and judgment on this incident and determined that this incident was a typical social engineering attack incident of "building plank roads openly and crossing Chencang secretly", and will also reveal the secrets of this incident in this article. A new indirect command execution attack technique used by the Lazarus organization. The Lazarus organization is a team from

May 25, 2023 pm 08:41 PM
Build Events
How to analyze the latest RCE vulnerability in Apache Solr

How to analyze the latest RCE vulnerability in Apache Solr

Introduction: The RCE0day vulnerability was discovered in ApacheSolr (the vulnerability number is not given). Here we simply reproduce the object and analyze the entire RCE process for your reference. Vulnerability recurrence and recurrence version: 8.1.1 To implement RCE, two steps are required. First, confirm that the application has enabled a certain core (can be viewed in CoreAdmin). In the instance, the application has enabled mycore, and then first send the following to its config interface. json data, {"update-queryresponsewriter":{"startup":"lazy",&quot

May 25, 2023 pm 06:58 PM
RCE apache solr
Example Analysis of Wireless Network Security in Big Data

Example Analysis of Wireless Network Security in Big Data

There are many important IT resources within the enterprise network, such as OA servers, ERP servers, etc. Once these business hosts stop working or are attacked, they will directly affect the normal operation of the business and cause heavy losses. In the case of wired networks, security is relatively reliable. At this stage, most companies provide wireless Internet access; as long as the client knows the wireless password, it can access the company's LAN, causing security risks. The key point is that your wireless password is not secure: software such as aircrack can brute force the wireless password. Once an employee installs software such as a wifi key, your wireless connection is public. The way guest and office networks are separated does not prevent guests from connecting to the office network.

May 25, 2023 pm 05:46 PM
大数据
How to configure and verify network equipment Telnet

How to configure and verify network equipment Telnet

In normal work and maintenance, we often use common remote connection methods such as Telnet or SSL. Today I want to write about the configuration and verification of Telnet. First of all, we need to understand what Telnet is. Telnet is a way to access devices remotely through an IP network. It has three verification methods: no password verification, password verification, local username and password verification. Its port is TCP/23 port. Next we configure Telnet: The network topology is as shown in the figure below. 1. First set the IP address of the PC to 192.168.100.1/24, as shown in the figure below. 2. Configure the IP address of the port connected to the network on the router [RT1]intg0

May 25, 2023 pm 04:58 PM
telnet
Example analysis of Samba security vulnerabilities

Example analysis of Samba security vulnerabilities

Today, Samba reported another major vulnerability. The vulnerability is currently numbered CVE-2015-0240. An uninitialized pointer in the Samba daemon smbd can be exploited remotely. She can allow a malicious Samba client to send a specific netlogon packet to thereby Obtain the permission to run smbd, and the default permission of smbd is still the root super administrator. This vulnerability affects Samba3.5 and higher versions. Most current GNU/Linux distributions will be affected. The vulnerability analysis report of RedHatSecurityTeam has been released. The current solution to temporarily reduce the risk: add: r in /etc/samba/smb.conf

May 25, 2023 pm 04:40 PM
samba
How are websites hijacked?

How are websites hijacked?

Network security is becoming increasingly severe. Webmaster friends have more or less encountered the experience of being hacked and hijacked. For friends who are honest and conscientious about their website, they have finally made some achievements, but they will be hijacked. It’s back to before liberation. In this issue, let’s discuss what are the common ways for websites to be hacked and hijacked? How to prevent and repair these risks? Turn on iis7 website monitoring to detect whether the website has been hijacked, DNS pollution, and whether the website has been hacked. , being attacked, having the title changed, and being linked to black links are also directions that we need to check. 1. Traffic hijacking 1.1 Whole site redirection This type of hijacking is relatively direct and easy to detect. Usually, this type of hijacker will achieve full success by loading js into the page or implanting code into the web server.

May 25, 2023 pm 02:57 PM
网站开发
How to display URL after link using CSS

How to display URL after link using CSS

Use CSS to display the URL after the link:after{content:"("attr(href)")";} What is cssscss is a computer language used to express file styles such as HTML or XML, mainly used to design web pages Style to make the web page more beautifying. It is also a language for defining style structures such as fonts, colors, positions, etc., and CSS styles can be stored directly in HTML web pages or separate style files, and the priority of style rules is determined by CSS based on this hierarchical structure, thus achieving Cascading effect, developed to this day, CSS can not only decorate web pages, but also format web pages with various scripts.

May 25, 2023 pm 12:25 PM
CSS
How to set up mesh networking

How to set up mesh networking

Method for mesh networking settings 1. Turn on the mesh network device. 2. Click "Add" above. 3. Wait for the system to search by itself. 4. Select the mesh node routing, and then select the location you want to place it. 5. Just wait for the system to operate on its own.

May 25, 2023 am 11:49 AM
mesh
Example analysis of web file upload vulnerabilities

Example analysis of web file upload vulnerabilities

File upload function module The file upload function is an essential function for most WEB applications. Websites allow users to upload their own avatars, some social networking sites allow users to upload photos, some service websites require users to upload electronic files of supporting materials, and e-commerce websites Allow users to upload pictures to display product conditions, etc. However, the seemingly inconspicuous file upload function can pose huge security risks if security protection measures are not taken. Principle of the file upload vulnerability: When a user uploads a file in the file upload function module, if the WEB application does not effectively verify the security of the file during the file upload process, the attacker can attack the server by uploading malicious files such as WEBshell. Attack, in this case it is believed that the system has a file upload vulnerability.

May 25, 2023 am 10:49 AM
web
How to perform ipsec instructions and tunnel case analysis

How to perform ipsec instructions and tunnel case analysis

1. Introduction to IPSEC IPSec includes security protocol (SecurityProtocol) and key exchange protocol (IKE). It was developed by IETF (Internet Engineering Task Force) and can provide access control, connectionless integrity, and data source for both communicating parties. A general term for a series of network security protocols that provide services such as authentication, anti-replay, encryption, and data flow classification and encryption. The security protocols include AH (Header Authentication Protocol) and ESP (Security Encapsulation Payload); and IKE is a network security protocol based on ISAKMP. (InternetSecurityAssociationandKeyMana

May 25, 2023 am 09:50 AM
ipsec
How to do URL filtering

How to do URL filtering

URL filtering 1 creates a class-map (class map) to identify transmission traffic. First, the network segment of the intranet. Second, define a regular expression to determine the (domain name) keyword contained in the URL. Third, check the IP message header to see if it is http traffic. 2 Create a policy-map (policy map) and associate class- map either allows the connection or drops the connection. Usually the policy is applied to the inside (inbound) interface. Only one policy map can be applied to an interface. 3. Apply class-map to the interface. -------------------------------------------------- ------------------

May 25, 2023 am 08:55 AM
URL

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