The possibly upgraded firewall does not do that anymore. Previously the internal firewall automatically opened FTP data connection ports by inspecting FTP control connection traffic. So the existing firewall rules or NAT rules no longer match. Other things that could have happened during the upgrade (with decreasing order of probability - subjective).įTP data connection ports in server firewall were closed.įTP data connection port range changed in the FTP server. You actually have to do it, even if it has not changed, as the server is clearly misconfigured. If the IP address has changed, you have to reconfigure the FTP server to the new IP address. The FTP server reports 23.97.97.140 in the PASV response. Side note: in my Azure FTP settings there is an Alert at the right which says that "to accept passive connections when you are using FTP over SSL (FTPS), or when your Firewall does not filter packets, configure the external IPv4 address of your firewall." We can access to the server without trouble with another FTP program developed by a client (which doesn´t let us choose the Transfer Mode and we don´t know the default mode it uses) and also by command line. Response: 150 Opening BINARY mode data connection.Įrror: Connection timed out after 20 seconds of inactivityĮrror: Failed to retrieve directory listing Status: Insecure server, it does not support FTP over TLS. Status: Connection established, waiting for welcome message. Log we get when trying to access in 'Passive' mode: Status: Resolving address of Our connection settings in FileZilla are the following: In order to do this, we turned it off, configured the new settings through Azure Portal and ,after the update, turned it back on.īefore the update, we could access the server using Filezilla with Transfer Mode in 'Default' but NOW, it only let us connect by selecting the 'Active' Mode.Īfter the update, we didn´t change Firewall/Server/FileZilla or any kind of settings. We've recently upgraded our Azure server to the package A5 (2 cores, 14gb RAM).
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