421-For your safety only secure SFTP connections are allowed.\n421-Please use SFTP to connect to your webspace.\n421-How to use SFTP with your webspace and client?\n421-Check the IONOS Control Center and IONOS Help Center - just search for SFTP.\n

nginx1.27.4

HTTP/1.1 403 Forbidden
Content-Type: text/html; charset=iso-8859-1
Content-Length: 321
Connection: keep-alive
Keep-Alive: timeout=15
Server: nginx/1.27.4
Date: Tue, 18 Mar 2025 19:36:37 GMT

nginx

HTTP/1.1 400 Bad Request
Server: nginx
Date: Tue, 18 Mar 2025 05:44:21 GMT
Content-Type: text/html
Content-Length: 650
Connection: close