IP and mac binding refers to associating a specific IP address with a specific MAC address, so that only the device using the MAC address can use the IP address for network communication. Binding ip and mac can prevent the IP address of the bound host from being spoofed. Prerequisites: 1. The MAC address is unique and cannot be spoofed; it can only be bound to hosts on the network directly connected to the router (that is, The host's gateway is on the router).

1. Black/white list IP restricted access configuration nginx There are several ways to configure black and white lists. Here are only two commonly used methods. 1. The first method: allow, denydeny and allow instructions belong to ngx_http_access_module. nginx loads this module by default, so it can be used directly. This method is the simplest and most direct. The setting is similar to the firewall iptable. How to use: Add directly to the configuration file: #Whitelist settings, followed by allow is accessible IPlocation/{allow123.13.123.12;allow23.53.32.1/100;denyall;}#Blacklist settings,

The usage of return in C language is: 1. For functions whose return value type is void, you can use the return statement to end the execution of the function early; 2. For functions whose return value type is not void, the function of the return statement is to end the execution of the function. The result is returned to the caller; 3. End the execution of the function early. Inside the function, we can use the return statement to end the execution of the function early, even if the function does not return a value.

1. Set the directory whitelist: There is no restriction on the specified request path. If there is no restriction on the request path to the api directory, it can be written as server{location/app{proxy_passhttp://192.168.1.111:8095/app ;limit_connconn20;limit_rate500k;limit_reqzone=fooburst=5nodelay;}location/app/api{proxy_passhttp://192.168.1.111:8095/app/api}}#Because nginx will give priority to accurate matching

How to check the IP address on WeChat: 1. Log in to the computer version of WeChat, right-click the taskbar at the bottom of the screen, and click "Task Manager"; 2. When the task manager pops up, click "Details" in the lower left corner; 3. Task management Enter the "Performance" option of the browser and click "Open Resource Monitor"; 4. Select "Network" and check the WeChat process "Wechat.exe"; 5. Click "TCP Connection" below to monitor the WeChat network IP related situation. Sending a message and getting a reply will reveal the other person's IP address.

Solution to wifi showing no IP allocation: 1. Restart the device and router, turn off the Wi-Fi connection on the device, turn off the device, turn off the router, wait a few minutes, then reopen the router to connect to wifi; 2. Check the router settings and restart DHCP, make sure the DHCP function is enabled; 3. Reset network settings, which will delete all saved WiFi networks and passwords. Please make sure they are backed up before performing this operation; 4. Update the router firmware, log in to the router management interface, and find the firmware Update options and follow the prompts.

Concept: uv (uniquevisitor): unique visitor, each independent Internet computer (based on cookies) is regarded as a visitor, and the number of visitors who visit your website within a day (00:00-24:00). Visits to the same cookie within a day are only counted once PV (pageview): visits, that is, page views or clicks, each visit to the website by the user is recorded once. When a user visits the same page multiple times, the total number of visits is counted. Independent IP: The same IP address is only counted once within 00:00-24:00. Friends who do website optimization are most concerned about this. Let me first state the environment. This run nginx version 1.7, the backend tomcat runs dynamic

The common meanings of IP include "IP address", "intellectual property", "unique selling point" and "independence": 1. IP address is a digital identifier used to identify and locate equipment in computer networks; 2. Intellectual property , refers to the rights and interests enjoyed by people’s intellectual creations, including patents, trademarks, copyrights, trade secrets, etc.; 3. Unique selling points are the unique characteristics of a product or service that distinguish it from competitors and attract customers; 4. Independence refers to the ability of a country or region to make independent decisions and manage itself without external control or interference.