![]() I noticed that the PORT command's address you're using is in the 100.64.0.0/10 network which is in RFC 6598: You stated that you can't use passive mode: that usually means the FTP's server side is behind a restrictive (local or on the network path) firewall which has no configuration to allow the FTP server to open temporary random listening ports corresponding to the output of the PASV command. But the difficulty is now reversed: that's the server's firewall side which must cope with the random port chosen by the server when transmitting the PASV command's answer containing the IP and port. The PASV command instead makes the client initiate connections twice to the server: one for command and one for every data transfer. The FTP protocol, written before today's concept of firewall existed is quite complex: while the client connects to the server for commands, for data transfers (including the output of the LIST command, but not the output of the PWD command which is directly in the command connection) in so-called active mode that is the server which initiates the connection (usually from port 20, to a random port chosen by the client).Īll this makes it difficult for "dumb" firewalls to let FTP work with the PORT command. If it is an issue on my end, what can I try to fix it? ![]() Is this likely to be an issue with my end (the client) or the FTPĢ. The question I therefore have is in two parts:ġ. This is the first time I've been required to use active mode when connecting. I can connect to a regular FTP server in passive mode without issue. I've also checked that there is nothing blocked in iptables. Likewise, I've verified that UFW is inactive from running: However, when enabling passive mode I am met with the following problem: Probably worth mentioning I can successfully run pwd and I can change directories with cd given I already know the name of two directories.įtp: setsockopt (ignored): Permission deniedįrom doing a lot of googling I saw a variety of suggestions such as enabling passive mode, and checking my firewall. Here is a screenshot of my terminal window: I can connect to the FTP server, however, when running it in debug mode by passing the -d flag to the ftp command, I am met with errors when attempting to list files. I have tried this with Filezilla by enabling active ftp and also via the command line. I need to connect to an FTP server where the connection needs to be in active mode. Now you should be able to login as root with your SSH keys.I'm currently running Ubuntu 19:10 as my primary operating system. If the SFTP Protocol is specified, it is possible to specify the Logon Type as "Key File" and specify the location of the private key file ( my-ssh-key). This is done (I believe) in the profile settings in the Site Manager of the FileZilla client. Copy the contents of my-ssh-key.pub into this file: /root/.ssh/authorized_keys (using sudo access).Ĭonfigure FileZilla to use Key logon. ![]() Login to Ubuntu with your account with sudo access. Generate an SSH keypair, if you don't have one (can be done with this command: ssh-keygen -t rsa -b 2048 -f my-ssh-key - this will generate 2 files: my-ssh-key and my-ssh-key.pub). In order for you to log in as root with FileZilla (or any other SFTP tool), you need to setup SSH key authentication. ![]() Root access with password is disabled by default on Ubuntu. Disclaimer: I'm not an expert on FileZilla, so for specific instructions please refer to FileZilla documentation.
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