220 NAS FTP server ready.
530 Login incorrect.
214- The following commands are recognized (* =>'s unimplemented).
   USER    LPRT    MODE    MSOM*   RNTO    SITE    RMD     SIZE    AUTH 
   PASS    EPRT    RETR    MSAM*   ABOR    SYST    XRMD    MDTM    PBSZ 
   ACCT*   PASV    STOR    MRSQ*   DELE    STAT    PWD     MLST    PROT 
   SMNT*   LPSV    APPE    MRCP*   CWD     HELP    XPWD    MLSD    CCC 
   REIN*   EPSV    MLFL*   ALLO    XCWD    NOOP    CDUP    MFMT 
   QUIT    TYPE    MAIL*   REST    LIST    MKD     XCUP    FEAT 
   PORT    STRU    MSND*   RNFR    NLST    XMKD    STOU    OPTS 
214 Direct comments to ftp-bugs@NAS.
211- Extensions supported:
 AUTH TLS
 PBSZ
 PROT
 CCC
 SIZE
 MDTM
 REST STREAM
 MFMT
 TVFS
 MLST modify*;type*;unique*;size*;UNIX.mode*;UNIX.owner*;UNIX.group*;
 MLSD modify*;type*;unique*;size*;UNIX.mode*;UNIX.owner*;UNIX.group*;
 UTF8
211 End.

nginx

HTTP/1.1 200 OK
Server: nginx
Date: Wed, 22 Jan 2025 08:11:40 GMT
Content-Type: text/html
Content-Length: 543
Last-Modified: Wed, 27 Nov 2024 20:21:00 GMT
Connection: keep-alive
Keep-Alive: timeout=20
Accept-Ranges: bytes

nginx

HTTP/1.1 502 Bad Gateway
Server: nginx
Date: Thu, 23 Jan 2025 01:15:33 GMT
Content-Type: text/html
Content-Length: 552
Connection: keep-alive
Keep-Alive: timeout=20

HTTP/1.1 403 Directory Listing Denied
Content-Type: text/plain
Connection: close