FTP
PASV
RETR
PRET
# Server-side
REPLY PRET 550 unknown command
# Client-side
ftp
FTP RETR PASV with PRET not supported
ftp://%HOSTIP:%FTPPORT/%TESTNUMBER --ftp-pret
# Verify data after the test has been "shot"
USER anonymous
PASS ftp@example.com
PWD
PRET RETR %TESTNUMBER
# we expect that the server doesn't understand PRET
84