ARP part
IP & ICMP
UDP part
TCP Section
1. UDP IntroductionUDP is a simple datagram-oriented transport layer protocol. Each output operation of a process generates a UDP datagram and assembles it into an IP datagram to be sent. This is different
The User Datagram protocol, or UDP, is a simple transport layer protocol for datagrams: Each output of a process produces only one UDP datagram, which sendsAn IP datagram.The process accesses UDP by creating an sock_dgram type of socket within an
TCP/IP is a commonly used standard protocol for network interconnection. It can communicate with each other in different environments and nodes, it is the protocol used by all computers connected to the Internet to exchange and transmit various
TCP (transmission Control Protocol, transmission Protocol) is a connection-oriented protocol,In other words, a reliable connection must be established with each other before sending or receiving data.A TCP connection has to be three "conversations"
Figure 1 shows the interface for setting rules for the firewall software of Rising's Personal Edition. Careful readers will find that the "protocol" column in Figure 1 contains "TCP", "UDP" and other terms. What do they mean? Now let's talk about
We read the world wrong but say it deceives us."We read the world wrong, but say the world deceives us."reference : TCP/IP Primer Classic (fifth edition)TCP/IP Detailed Volume One: protocolFirst, IntroductionUDP (User Datagram Protocol) is a simple
1.UDP Brief Introduction
UDP is a transport layer protocol, and TCP protocol is in a hierarchy, but unlike the TCP protocol, UDP protocol does not provide timeout retransmission, error retransmission and other functions, that is, it is unreliable
TCP/IP protocol family
1.1 Introduction
The TCP/IP protocol family consists of 5 layers: Physical layer, Data link layer, network layer, Transport layer and application layer. The first four layers correspond to the first four layers of the OSI
1. Brief Introduction to UDP
UDP is a transport layer protocol, which is in a layer with TCP protocol. However, unlike TCP, UDP does not provide timeout retransmission, error retransmission, and other functions, that is, it is an unreliable protocol.
Communication protocols for TCP/IP
This section briefly introduces the internal structure of TCP/IP and lays the groundwork for discussing security issues related to the Internet. TCP/IP protocol groups are popular in part because they can be used
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