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122. SFTP usually uses port 22 but can be configured to run on nearly any port. Port 22 is generally used for connection via SSH. SFTP is just one of protocols which can be run over SSH (others include virtual terminal). In fact, the SFTP is independent and can be run even without using SSH. SFTP is sometimes called "Secure FTP" which leads to ...
SFTP (SSH File Transfer Protocol) only needs port 22 and no other port, therefore is very firewall friendly, and highly secure thanks to the encryption layer provided by the SSH connection. FTPS is highly secure thanks to the encapsulation within a SSL channel, but it requires quite a few open ports to operate (990 for the control channel, 989 ...
This is how the FTP client knows you need to create a secure connection, and why I keep repeating that the port number is irrelevant. Continue to use your username and password as you've set it up (I am using anonymous and no password), and insert your port number at the end, though if you are using the FTPS default of 990, Filezilla tends to ...
3. passive mode FTPS would use a control port over port# 1024 and so it would work better with a firewall than non-passive. the client tells port 21 what upper-bound port to open and so you can configure the client to say "control is on port 2000 or 2001" and then the server will open outbound port 2000 or 2001. most FTP clients support ...
Also I did eventually get a functioning setup by setting the chroot location to %h, and then mounting the /var/www/html inside /home/ftp/. Now I can connect with SFTP. But I do still also see the .ssh folder in /home/ftp, and of course I can't make that inaccessible, or
3. Because FTP utilizes a dynamic secondary port (for data channels), many firewalls were designed to snoop FTP protocol control messages in order to determine what secondary data connections they need to allow. However, if the FTP control connection is encrypted using TLS/SSL, the firewall cannot determine the TCP port number of a data ...
13. As others have pointed out, changing the port number does not offer you much security. I'd like to add that changing the port number may actually be detrimental to your security. Imagine the following simplified scenario. A cracker scans 100 hosts.
2. The client is apparently operating under the assumption that SFTP is like regular FTP in that it has separate control and data connections. For SFTP this is not the case, only port 22 is needed on the SFTP server and everything gets multiplexed on that one port. SFTP and FTP are similar only with regard to their use-case.
Default: 0 (use any port) pasv_min_port. The minimum port to allocate for PASV style data connections. Can be used to specify a narrow port range to assist firewalling. Default: 0 (use any port) If you set both ports to the same, e.g. pasv_max_port=12345, pasv_min_port=12345, you may be able to get what you are after.
3. The problem with FTP over TLS with both firewalls and NAT appliances is two-fold, with both firewall and NAT problems. FTP is a crappy protocol that requires two connections: in passive FTP that is initially one control connection to a default port, TCP 21. to actually transfer data (and getting a directory listing is a data transfer) the ...