FTP
229 Entering Extended Passive Mode
Entering Extended Passive Mode. The server provides only a port number for the data connection, using the same IP as the control connection. Works with both IPv4 and IPv6.
When You See This Code
After issuing the EPSV command. The server responds with a port number in the format (|||port|) for the client to connect to.
How to Fix
No fix needed — connect to the server's control IP on the provided port. If it fails, try falling back to PASV (227) or check firewall rules.