tcp ip guide

Introduction to tcp protocol (TCP/IP) and TCP/IP Role of the transport layer: the IP layer provides point-to-point connections, and the transport layer provides end-to-end connections. Transport Layer Protocol 1.

Ethernet software is a physical IP address, also known as a MAC address. It is not a logical IP address, but the IP address is mapped to the IP address on the interface on the Internet layer. Ethernet-- The access method used by Ethernet is to use a carrier with conflict detection to listen for multiple accesses (CSMA

1th Chapter the concept of TCP/IP TCP/IP refers to the set of network protocols used for the Internet and many other networks. TCP/IP Features: Ø logical addressing-the physical address (MAC address) is a unique and permanent ad

isolation (The following example will see this).Third, the case analysis3.1 OverviewOr to visit Baidu home page For example, first use the DNS protocol to resolve the URL to an IP address, and then between the client and the server to establish a TCP connection, with Wireshark capture groups such as:Figure 4 Wireshark capture establishing a TCP connection groupi

I. TCP/IP background and introductionIn the 70 's, with the development of computer technology, computers users realized that it was necessary to connect computers from all over the world to play a more important role in computer. But the simple connection is not enough, because the computer can not communicate. Therefore, the design of a common "language" to communicate is necessary to be less, then the

(segment). Session Layer: Manages the session process between hosts, including management during session creation, termination, and sessions. The presentation layer (presentation Layer): The presentation layer transforms the data transmitted by the network, so that the information transmitted between multiple hosts can understand each other, including data compression, encryption, format conversion and so on. Application layer (Application Layer): The application layer communicates with the app

Reference content:Http://baike.baidu.com/link?url= 6rsx0yrjy8chn4b0kflmjkdl23xutqxo6aziaxbh2ealwcxuuxmy-2ijhhciqifa8q20vg6ew9ps4ef9qrchbq#2_6 TCP/IP TCP/IP is a shorthand for the transmission Control protocol/internet Protocol, which is the most basic protocol for the Internet, which is the transmission Protocol/Intern

I have written this article about the management of SCO TCP/IP. I hope it will be helpful to you, just like what was written at the beginning of this topic, this is the basis for hackers, and we still need to discuss it in the direction of network management! Haha!1 TCP/IP startupTCP/

IP: Internet Protocol Unreliable: IP datagram cannot be successfully delivered to the destination, and only the best transmission service is provided. No connection: the IP address does not maintain any status information about subsequent datagram. The processing of each datagram is independent of each other. IP Heade

Different TCP/IP layers provide different security. For example, a virtual private network is provided at the network layer and a secure connection service is provided at the transmission layer. The following describes the security of TCP/IP at different levels and the methods to improve the security of each layer.I. S

What is the TCP.IP protocol? Generally speaking, TCP/IP protocol is the Technology foundation of Internet based on TCP/IP protocol (Transmission Protocol/Inter-network protocol). Full name Transmission Control protocol/internet Protocol. The Protocol of Transmission Control Protocol/Internet, also known as network Comm

The TCP/IP network communication software package uses remote access commands. These commands were first developed for Arpanet by UC Berkely. It allows you to remotely register to another system and copy files from one system to another. You can obtain information about a system, such as who is currently registering for use. When calling a system address, these remote commands use the domain name or

Introduction: Before 1990, the hierarchical model dominated by data communication and networking literature was the Open Systems Interconnection (open system Interconnection,osi) model, and now the TCP/IP protocol family became the dominant commercial architecture. An OSI seven-layer model 1.1 Physical Layer The mechanical and electrical specifications that relate to the interface and the transmission media

address select the next hop IP address (also be a routing device or virtual routing device or destination address), through the ARP protocol to get to the next hop MAC address, modify the packet, The destination MAC address is set to this address, which is thrown to the link layer and sent out by the link layer. Router Isolated broadcast domain The transport layer, including the TCP protocol, is the UDP

broadcast, the answer is sent by a single advertisement.Two. RARP (Inverse Address Resolution Protocol)Rarp is to map the physical address to a logical address, the RARP request is sent by broadcast, the answer is sent by a single advertisement.Three. IP (Internet Interconnection Protocol)IP is the transmission mechanism, unreliable, "best effort" of TCP/

Implement TCP/IP programming under DOS real model (lower) Http://blog.csdn.net/dos5gw/archive/2010/03/29/5429582.aspx There may be very few people using DOS, and fewer people are working on DOS. There are many reasons. But in terms of industrial control, there are still a lot of DOS users, especially dos622 and dos71 are still running smoothly on many industrial computer, POS machines, and supermarket ca

set to the value after the slow start threshold is halved;implementation of congestion avoidance algorithm (high starting point, linear growth);QUIZ:After the TCP connection is established, what is maintained by what?ANSWER:The data received and sent from the network are implemented through sockets. However, if the socket is disconnected, then sending data and receiving data will definitely cause problems. How can I tell if a socket is available? How

This article contains the following content:1.TCP/IP Protocol System2.OSI Models3. Data packets4.TCP/IP Interactive modeThe protocol layer of the 1.TCP/IP model is divided into four layers:Network access Layer: Provides an interfa

TCP/IP details -- Role of the TCP Header option field -- TCP Header1. Set the option field of the TCP header to 40B and write down some common items:2. The Option END field (EOP, 0x00) occupies 1B, and only one packet segment is used once. It is placed at the end to indicate

not enter our system (because the destination IP address of this package will not be the IP address of the host we disguise, our system will not send RST packets to the target host.For example, assume we are host a, and now I want to attack host B. First, I first disguise host C for ARP spoofing on B (construct an ARP response packet to B with the IP address of