Netezza default ports - learn Reading Time: < 1 minute
    Port number 5480         nzsql, postgres,   NzAdmin tools and for ODBC & JDBC connections   
    Port number 5481         CLI and NzAdmin   tool messaging connections   
    Port number 5483         nzbackup and   nzrestore commands   
    Port number 5482         NzLoad in NPS version 3.1 and lower. For NPS   versions higher than 3.1, (no longer used)   

Netezza uses ssh port 22 for Netezza support team to remotely connect to your server to work on issues. Most large corporations dont open this port up based on their security to policy. Also, for IBM to have ftp access to your box to copy Netezza logs, etc (while working on PMR’s) you have to open ftp port 20 & 21.