Shulou(Shulou.com)06/03 Report--

What is the port to connect to the CVM? Many people don't know much about it. Today, in order to let you know more about the CVM port, let's summarize the following. Let's take a look at it.

Port generally refers to the port in the TCP/IP protocol. The port number ranges from 0 to 65535. Generally, you need to open port 22 to connect to Linux CVM and port 3389 to connect to Windows server.

3389 is the remote login port of CVM, and it is the default port for many servers to connect remotely, so many hackers scan this port. To ensure security, you can modify the port of remote connection.

Port 22 is the ssh port. PcAnywhere may establish the connection between TCP and this port in order to find ssh. The equipment used to connect linux port 22 is SSH Secure Shell and so on.

Users need to open the port in the security group before they can use the service corresponding to the port. After modifying the port of the service, you also need to open the corresponding port in the corresponding security group, otherwise the service cannot be used. In addition, the more common server ports are: port 80, port 443, port 21, and so on.

Generally, 80 is the access port of the web server and the default port of the http protocol. In fact, the browser (non-IE) has already entered the protocol for you when entering the website.

Port 21 is mainly used for FTP (File Transfer Protocol, File transfer Protocol) service, and FTP service is mainly used to upload and download files between two computers.

Port 8080 is used for WWW proxy services to enable web browsing, often adding a ": 8080" port number when visiting a website or using a proxy server.

The above is a brief introduction to what the port to connect to the CVM is. Of course, the differences in the detailed use of the above have to be understood by everyone. If you want to know more, welcome to follow the industry information channel!

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