台北科技大学：《计算机网络》（英文版） NP04 11 Introduction

IANA ranges for the port numbers Registered 01.023 49,152 65.535 1024 49,151 Well-known Dynamic CSIE NTUT TANAN Figure 11-5

CSIE, NTUT, TAIWAN 11 Figure 11-5 IANA ranges for the port numbers

Socket addresses Combination of an ip address and a port number is called a socket address The socket address uniquely defines a process IP header contains the ip addresses UDP header includes the port numbers CSIE NTUT TANAN

CSIE, NTUT, TAIWAN 12 Socket Addresses • Combination of an IP address and a port number is called a socket address • The socket address uniquely defines a process • IP header contains the IP addresses • UDP header includes the port numbers

Socket addresses IP address Port number 200.23.56.8 69 200.23.568 69 Socket address CSIE NTUT TANAN Figure 11-6

CSIE, NTUT, TAIWAN 13 Figure 11-6 Socket addresses