FTP
PASV
RETR
# Server-side
REPLY PASS 633 XXXXXXXX\x00\x00XXXXXXXX
# Client-side
ftp
GSS-API
FTP with 633 response before gss initialized
ftp://%HOSTIP:%FTPPORT/%TESTNUMBER
# Verify data after the test has been "shot"
USER anonymous
PASS ftp@example.com
# 67 == CURLE_LOGIN_DENIED
67