MikroTik router ftpd6.43.8

220 66 FTP server (MikroTik 6.43.8) ready
530 Login incorrect
500 'HELP': command not understood
500 'FEAT': command not understood

HTTP/1.1 407 Proxy Authentication Required
Proxy-Authenticate: Digest realm="proxy", nonce="6626d657", qop="auth"
Content-Type: text/html
Cache-Control: no-cache
Content-Length: 166