Owners manual

11Rack Power Filter: Command Line Interface
Logging on to the Command Line Interface
To access the command line interface, use either a local (serial) connection or a remote (Telnet or SSH)
connection with a computer on the same network as the Rack Power Filter.
Remote access to the command line interface
You can access the command line interface through Telnet or SSH. Telnet is enabled by default. Enabling
SSH disables Telnet.
To enable or disable these access methods, use the Web interface. On the Administration tab, select
Network on the top menu bar, and then the access option under Console on the left navigation menu.
Telnet for basic access. Telnet provides the basic security of authentication by user name and
password, but not the high-security benefits of encryption.
To use Telnet to access the command line interface:
1. From a computer that has access to network on which the Rack Power Filter is installed, at a
command prompt, type
telnet and the IP address for the Rack Power Filter (for example,
telnet 139.225.6.133, when the Rack Power Filter uses the default Telnet port of 23), and
press
ENTER.
If the Rack Power Filter uses a non-default port number (from 5000 to 32768), you must
include a colon or a space, depending on your Telnet client, between the IP address (or DNS
name) and the port number. (These are commands for general usage: some clients don’t allow
you to specify the port as an argument and some types of Linux might want extra commands).
2. Enter the user name and password (by default, apc and apc for an Administrator, or device and
apc for a Device User).
If you cannot remember your user name or password, see “Recovering from a Lost
Password” on page 8.
SSH for high-security access. If you use the high security of SSL for the Web interface, use SSH for
access to the command line interface. SSH encrypts user names, passwords, and transmitted data. The
interface, user accounts, and user access rights are the same whether you access the command line
interface through SSH or Telnet, but to use SSH, you must first configure SSH and have an SSH client
program installed on your computer.
Local access to the command line interface
For local access, use a computer that connects to the Rack Power Filter through the serial port to access
the command line interface:
1. Select a serial port at the computer and disable any service that uses that port.
2. Connect a serial cable from the selected serial port on the computer to the Serial port on the Rack
Power Filter.
3. Run a terminal program (e.g., HyperTerminal) and configure the selected port for 9600 bps, 8
data bits, no parity, 1 stop bit, and no flow control.
4. Press
ENTER. At the prompts, enter your user name and password.