220 DS6122 FTP server ready.
530 User anonymous unknown.
214-
    The following commands are recognized.
    (`-' = not implemented, `+' = supports options)
    USER    REIN-   TYPE    ALLO    MKD     HELP    MIC     MLST+   MSND-
    PASS    PORT    STRU    REST    PWD     NOOP+   CONF    MLSD    MSOM-
    ACCT-   LPRT    MODE    RNFR    LIST    AUTH    ENC     MAIL-   XCUP
    CWD     EPRT    RETR    RNTO    NLST    ADAT    FEAT    MLFL-   XCWD
    CDUP    PASV    STOR    ABOR    SITE    PROT    OPTS    MRCP-   XMKD
    SMNT-   LPSV    STOU    DELE    SYST    PBSZ    MDTM    MRSQ-   XPWD
    QUIT    EPSV    APPE    RMD     STAT    CCC     SIZE    MSAM-   XRMD
214 Direct comments to ftp-bugs@DS6122.
211-Features supported
 MDTM
 MLST Type*;Size*;Modify*;Perm*;Unique*;
 REST STREAM
 SIZE
 TVFS
211 End

nginx1.21.0

404 Not Found

HTTP/1.1 404 Not Found
Server: nginx/1.21.0
Date: Tue, 01 Apr 2025 03:45:25 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 196
Connection: keep-alive