FTP Server Online Tester
This tool is useful to test authentication, connectivity, encryption and mode of any File Transfer Protocol server reachable over IPv4 and IPv6.
lftp -e nlist to perform a directory listing query which works for linux servers, windows servers, etc.
The default mode is Passive Mode EPSV, which requires a more open firewall than Active Mode PASV.
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When saving the test results, no login information will be stored.