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What is the reason why FTP cannot connect to virtual host? Many novices are not very clear about this. In order to help you solve this problem, the following small series will explain it in detail for everyone. Those who have this need can come to learn. I hope you can gain something.

Due to the different environment and server attributes of each computer, FTP connection failures are common. The common reasons for FTP connection failure of virtual hosts are as follows:

FTP connection failed due to wrong username or password. For server security reasons, many virtual hosts prohibit anonymous connections, which can cause ftp connections to fail if the username or password is wrong.

2. Domain name resolution problem of virtual host causes ftp connection failure. When connecting FTP, the address bar needs to fill in the domain name or IP address of the FTP virtual host. If DNS domain name resolution is wrong, we will not be able to get the IP address, so the connection fails.

3. FTP connection failed due to firewall setting problem in virtual space. Firewall settings will also cause FTP server connection failure, you can turn off the firewall or reset, and then connect to see if you can connect successfully.

4, virtual host instability downtime caused by ftp connection failure. When the leased website space is in a down state, it is not connected to FTP. You can test whether the FTP server is healthy by using the PING command.

Frequent FTP connections in a short period of time lead to connection failure. If you frequently connect to FTP servers in a short period of time, you will be restricted by the security policy of the virtual host, resulting in connection failures. You can wait a while before trying to connect.

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