The computer ports are as follows:
0 Port: Invalid port, typically used to analyze operating system
1 Port: Transmission Control Protocol port Service multi-Switch Selector
2 Port: Management utility
3 Port: Compression process
5 Port: Remote
View the complete version: [-- Port details and how to enable and disable ports --]
I went to trustnet-platinum Network Management-Internet-Software Development-> Windows-> port explanation and how to enable port
When Microsoft Exchange Server 2013 is installed, POP3 client connection is not enabled. To enable POP3 client connection, you must start two POP3 services: Microsoft Exchange POP3 service and Microsoft Exchange POP3 Backend service. After POP3 is
Original address: http://www.moon-soft.com/download/info/2826.htm
Port: 0Service: ReservedDescription: Typically used to analyze the operating system. This method works because in some systems "0" is an invalid end, you will have different results
SMTP Protocol Introduction
1. IntroductionSMTP is called Simple Mail transmission protocol (Simple Mail Transfer Protocal). It aims to provide efficient and reliable mail Transmission for users.. An important feature of SMTP is
TCP/UDP Common port number
7 Echo (PING)9 DiscardDaytimer19 Word Fuzhou Builder20/TCP FTP Data21/TCP FTP Control File Transfer Protocol22/TCP SSH Secure Login, File transfer (SCP), and port redirection23/tcp Telnet Unsafe Text transfer25/tcp SMTP
A POP3 and SMTP command from Baidu Library
POP3 commands
What is POP3?POP3 (Post Office Protocol 3) is the 3rd version of the Post Office Protocol. It specifies how to connect a personal computer to an Internet Mail Server and download an email
C # basics-POP3-based Mail receiving and STMP-based mail sending,
Recently, emails are synchronized with outlook. I am interested in the email protocol. So I collected some information and learned how to use. net to send and receive emails.
I.
Computers communicate with each other through ports. For example, when accessing a website, Windows opens a port (such as port 1025) on the local machine and connects to a port of the remote website server, this is also true when others access you.
We can actually set up a small mail server to meet our needs through the POP3 service and SMTP service provided by Windows Server 2003.
First, install POP3 and SMTP service components
Windows Server 2003 does not have the POP3 and SMTP service
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