ftp> open nomads.ncdc.noaa.gov
Connected to nomads.ncdc.noaa.gov.
220 ::ffff:205.167.25.166 FTP server ready
User (nomads.ncdc.noaa.gov:(none)): 
331 Anonymous login ok, send your complete email address as your password

530 Sorry, the maximum number of allowed clients (30) are already connected.

ftp> cd /modeldata/cfsv2_forecast_6-hourly_9mon_flxf/
Not connected.
ftp> cd 2019            			
Not connected.
ftp> cd 201903         			 
Not connected.
ftp> dir                 			
Not connected.
ftp> quit