CLI to check FTPS Server Connection ?

Question

Hi,

We have set up a FTPS Server (IIS on Windows 2016 Server). Instead of using FTP Client (Like: FileZilla), is there any CLI we can check whether it is running properly ?

Can we try

1. Ping it - DNS Resolution
2. telnet servername.domain.com ?

For telnet, do we need to specify the port ? Should it be Port 20 or 21 ? Is there anyway to check SSL ?

Thanks

Answer 1

Hi @TonyJK ,

When you create a ftp site, IIS will ask you set port. If you don't set it, the default port is 21. If you choose FTPS protocal, the default port is 22.
You need to specify the port in telnet command, like telnet servername.domain.com 21.

Windows provides FTP command line for remote client test connection.

C:\>ftp <ServerName>  
Connected to <ServerName>.  
220 <ServerName> Microsoft FTP Service (Version 4.0).  
User (<ServerName>:(none)): anonymous  
331 Anonymous access allowed, send identity (e-mail name) as password.  
Password:  
230 Anonymous user logged in.  
ftp>  

Common command line statements also apply to ftp viewing and modifying folders.

• dir View the list of files and folders.
• cd Change to a different folder.
• get, put Copy files.
• by End the FTP session.

More FTP command line can refer to this docs.

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Best regards,
Bruce Zhang