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
A distribution frame is a device for end-to-end and connection of cables or optical cables. Interconnect or hand over the distribution frame. The complex distribution frame is a connection device connecting the trunk cable and optical cable of the
Port Concept
In network technology, Ex *] Network g.] # Yu K # The LN Port has two meanings: one is the physical Port, for example, ADSL Modem, Hub, switch, router is used to connect other network equipment interface, such as RJ-45 port, SC port
1024 The following is reserved for the system, and from 1024-65535 is used by the userFor personal writing applications, try not to use a port number between 0 and 1024.1024 to 65535 we can program with. This is not a Linux rule, it is the socket
When surfing the internet, we often see the word "Port" and often use the port number. For example, if "21" is added after the FTP address, "21" indicates the port number. So what does port mean? How can I view the port number? Does a port become
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
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.
1, 21 Ports:
Port Description: Port 21 is mainly used for FTP (file Transfer Protocol, Files Transfer Protocol) service.
Operation suggestion: Because some FTP server can log on anonymously, so it is often used by hackers. In addition, 21 port
We often see "ports" such as 135, 137, 139, and 443 in various network or website technical articles. But what is the use of these network ports? Will it pose a potential threat to our computers? How many ports are useful?
Port: 0 service: Reserved
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