220 (vsFTPd 3.0.2)
530 Login incorrect.
530 Please login with USER and PASS.
211-Features:
 EPRT
 EPSV
 MDTM
 PASV
 REST STREAM
 SIZE
 TVFS
 UTF8
211 End

nginx

HTTP/1.1 502 Bad Gateway
Server: nginx
Date: Wed, 08 Jan 2025 02:08:01 GMT
Content-Type: text/html
Content-Length: 552
Connection: keep-alive

MySQL5.5.62-log

MySQL:
  Protocol Version: 10
  Version: 5.5.62-log
  Capabilities: 63487
  Server Language: 8
  Server Status: 2
  Extended Server Capabilities: 32783
  Authentication Plugin: mysql_native_password