This section explains the preparations and information necessary for maintenance.
Maintenance work requires a FTP server. Set up the FTP server environment beforehand.
During maintenance operations, there are cases where the operator's device needs to connect to NS Appliances.
Default ports used for connection in these cases differ depending on the connection protocol as follow:
When connecting from a Telnet client device
23/tcp
When connecting from a SSHv2 client device
22/tcp
