APC ACRC501 Manuel D’Utilisation

You can use either a local (serial) connection, or a remote (Telnet or SSH) connection to access the 
control console.

Use case-sensitive user name and password entries to log on (by default, apc and apc for an 
Administrator, or device and apc for a Device User). A Read-Only User cannot access the control 
console. 

You can access the control console through Telnet or Secure SHell (SSH), depending on which is 
enabled. (An Administrator can enable these access methods through the Telnet/SSH option of the 
Network menu.) By default, Telnet is enabled. Enabling SSH automatically disables Telnet.

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 control console 
from any computer on the same subnet:

1. At a command prompt, type 

telnet

 and the System IP address for the cooling unit (when the 

cooling unit uses the default Telnet port of 23), and press 

E

NTER

. For example: 

telnet 139.225.6.133

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 use the high security of SSL for the Web interface, use Secure 

SHell (SSH) for access to the control console. SSH encrypts user names, passwords, and transmitted 
data. 
The interface, user accounts, and user access rights are the same whether you access the control console 
through SSH or Telnet, but to use SSH, you must first configure SSH and have a SSH client program 
installed on your computer.

If you cannot remember your

 user name or password, s

Note: If the cooling unit uses a non-default port number (between 5000 and 
32767), you need to include a colon or a space (depending on your Telnet client) 
between the IP address and the port number.