what is packet sniffing

department? At present, we lack clear role definition and responsibility division in the Operations management process, and automated integrated operations management platform, so that the problem is difficult to quickly and accurately find the cause, and after the failure of the processing of the necessary tracking with the Records. 2 . Secrets hidden behind traffic network interface of the end, the size of traffic, has not satisfied the current o

socket and client communication. (Note: The server-side listening port is unchanged, but the socket connection can be generated and one thread corresponds to a socket.) at the same time, a port can only establish one connection. NBSP Listening on a port, but while listening to the port, the generation of a waiting queue, each from the client's connection will be sent to the waiting queue, the server uses a certain algorithm to select the correspon

What a Python Gil is, how multithreaded performance really The blogger often hears the word Gil when he first touches python, and finds that the word is often equated with Python's inability to efficiently implement multithreading. In the spirit not only to know it, but also to know its research attitude, Bo Master collected all aspects of the informatio

When surfing the internet, we often see the word "Port" and often use the port number. For example, if "21" is added after the FTP address, "21" indicates the port number. So what does port mean? How can I view the port number? Does a port become the door to malicious cyberattacks ?, How should we face all kinds of ports? The following content will be introduced for your reference. Port Introduction: This a

What is the function and working principle of fiber Switch fiber switch: Fiber Optic switch is a high-speed network transmission relay device, which uses fiber optic cable as transmission medium compared with ordinary switch. The advantages of optical fiber transmission are fast speed and strong anti-interference ability. With the increasing of enterprise networ

What is DNS hijacking?DNS hijacking also known as domain name hijacking, refers to the use of certain means to obtain a domain name of the analytic control, modify the resolution of the domain name, resulting in access to the domain name from the original IP address to the modified designated IP, the result is a specific URL can not access or access to the false

servers on the Internet, instead of accessing a fixed server for requests from multiple clients on the Internet, the common Web Proxy server does not support external access requests to the internal network. When a proxy server can proxy hosts on the external network and access the internal network, this proxy service is called reverse proxy service. In this case, the proxy server acts as a Web server, and the external network can simply treat it as

access 6. SPring does not enforce that the application relies entirely on spring, and developers are free to use part or all of the spring framework Editing spring provides a number of features, where I'll quickly show each of its main aspects in turn.SpringFirst, let's clarify the spring range. Although spring covers many aspects, we already have a clear concept of what it should involve and what should n

First of all to explain to everyone is "what is chicken": the chicken is hacked and invaded, in the computer into the virus and Trojans and other backdoor procedures, with administrative privileges of the remote computer, the remote computer controlled by the intruder. Broiler can be a variety of systems, such as Windo

present, we lack clear role definition and responsibility division in the Operations management process, and automated integrated operations management platform, so that the problem is difficult to quickly and accurately find the cause, and after the failure of the processing of the necessary tracking with the Records. 2 . Secrets hidden behind trafficNetwork interface of the end, the size of traffic, has not satisfied the current operation and main

In Windows 7 above system, when setting the local IP address often see colleague contains IPV4 agreement item and IPV6 Agreement item, Inquire IPV6 and IPv4 difference, the following small series for everybody introduced under IPV6 and IPv4 what difference. The protocol family used in the current global Internet is the TCP/IP protocol family. IP is the protocol

After the vswitch system is restarted successfully and the VRP platform software is updated, the switch system is reconfigured according to the previous configuration, and the switch's working status returns to normal immediately, so what is the reason? As a core network ter

(' uname=sally '); Request principal (Entity content)　　　　　　　　Note : as required by the HTTP protocol, if a POST request is sent, the content-type message header should be included in the request packet, and the Ajax object will not add the message header by default. So we need to call the setRequestHeader method to add, but if it is a GET request, you don't have

socket and client communication. (Note: The server-side listening port is unchanged, but the socket connection can be generated and one thread corresponds to a socket.) at the same time, a port can only establish one connection. NBSP Listening on a port, but while listening to the port, the generation of a waiting queue, each from the client's connection will be sent to the waiting queue, the server uses a certain algorithm to select the correspon

Label: SP data BS server technology nbsp browser client cannotSynchronization refers to the communication mode in which the sender sends a packet only after the receiver sends a response.Asynchronous means that the sender sends the next packet instead of sending the response from the receiver.For example: Normal B/S mode (synchronous) Ajax technology (asynchronous)Synchronization: submit a request, wait for

Socket interface after connect ()There's one thing I've never understood, how does the UDP socket interface after connect do the test of sending data successfully or not? Direct sendto cannot be detected, why can I write after connect?After the UDP Connect kernel logs the destination IP and PORT in your connect, you can read and call write while the kernel will tell you the asynchronous error of the connected socketLike what:Once an error is sent to

Often see network friends in the difference between the switch and router, in fact, if you have used both switch and router friends should know, for everyone, switch and router use the biggest difference is that the router can realize dial-up internet access, and then shared to multiple computers at the same time the Internet, But the switch does not have the dial function, but the function of the switch is

important implications for the next steps. Not only does it affect the results you get, it also drastically reduces your workload. The right optimization development environment can provide you with excellent compiler tools, off-the-shelf optimization libraries, debugging tools, and performance evaluation tools to help you see exactly what your code is doing at runtime. Check out the webinar in the intel®