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Socket_stream Streaming sockets Socket_dgram Socket_raw RAW sockets IPPROTO_IP IP Protocol IPPROTO_ICMP Internet Control Message Protocol, with the original socket can realize the function of ping IPPROTO_IGMP INTERNET Gateway Service protocol, used

In the network programming, most of the time is the kernel filled with the message header, and then we fill in the data section to send. But if it is not the TCP/IP protocol, or some other reason, we need to fill the header of the message ourselves.

the computer network knowledge point combing of interview must test Transport Layer Overview Function: The transport layer provides communication services for the application layer above it. In the OSI seven-layer reference model, the transport

Recall the main function of the network layer: The network map is drawn by TCP or UDP protocol, and the packet is selected by the appropriate path (Network layer basic unit: Packet package) (1) Addressing (the IP address of the target end), the

Previously in TCP Volume One, saw the use of tcpdump. At that time, not too much attention, especially its output format, because unfamiliar, more reluctant to use it. The development of this period of time, with more sockets. When encountering a

TCP/IP Chapter 7th Ping Program The ping program is one of the ICMP messages in the format shown above. Identifier: The ID number that is placed into the sending process. This allows the PING program to recognize the returned information even if

The code, connection information, and annotations in the ELF file are stored in sections (section) and contain a Header table (section header). For each section, there is a table entry in the section Header table (section Header table

Linux network devices are different from character devices and block devices, and no files correspond to network devices. The application operates the network device through the socket.The network device driver belongs to the data link layer,

Enter the interactive interpreterpythonIrb/prySet Encoding#coding =utf-8#coding: Utf-8Package ManagementEasy_install/pip GemPip Install MarkdownGem Install MarkdownNotesPython line Comment # startsPython Multiline comments use three single quotation

TCP is used everywhere. Understanding the working principles of TCP helps administrators correctly diagnose network communication faults.The TCP protocol is complex. But don't worry. We didn't ask you to read RFC 793. This is just an initial lecture.

C learning notes -- malloc Memory Allocation In view of the solution that the previous leader told me to write it as a document, and I knew how to operate and solve it in my mind, but I did not know how to describe it in words. I decided to write

Release date:Updated on: Affected Systems:Sunway ForceContro 6.1 SP3Sunway ForceContro 6.1 SP2Sunway ForceContro 6.1 SP1Description:--------------------------------------------------------------------------------Bugtraq id: 49747 Sunway ForceControl

Common attack programs AbstractThere are some old ones, which seem useless now, but they are all famous. 1 Land Attack A Win95 machine. This is a vulnerability in Win95.If you initiate a connection (SYN) on the same port, Win95 will crash. /* Land.

Anatomy of the second article of SQL Server to reverse the data page header (translated) improve. dkreverse-engineering-SQL-server-page-headers when developing OrcaMDF, the first challenge was to parse the data page header. We know that the data

The layer-4 switch is quite common. So I studied the practical application of the layer-4 switch and shared it with you here. I hope it will be useful to you. With the increasing popularity of Mbit/s, Gbit/s, and even Mbit/s local area networks,

In fact, the layer-4 switch is a network device, not a software network management system. It is mainly based on technology. In recent years, with the popularization of Mbit/s, Gbit/s, and even Mbit/s, the wide application of Broadband LAN and even

Layer-4 switches are quite common, So I studied the basic knowledge and important technologies of layer-4 switches. I would like to share them with you here, hoping they will be useful to you. With the increasing popularity of Mbit/s, Gbit/s, and

When you deploy IPv6 in a WAN, an IPv6 firewall is also deployed. This article introduces some security issues caused by IPv6 and the problems that IT professionals should consider when deploying and operating IPv6 firewalls. Introduce IPv6 Firewall

In recent years, with the popularization of Mbit/s, Gbit/s, and even Mbit/s, the wide application of Broadband LAN and even Bandwidth WAN has driven the continuous development of switch technology. In enterprise applications, the rapid development

I. Question proposal With the development of computer technology, network technology and multimedia technology, modern distance education achieves a networked and real-time interactive teaching form. In particular, the development of Internet