APC AP7900 manual Switched Rack PDU

Switched Rack PDU

USER’S GUIDE

®

–Do not enable both versions of SSH unless you require that both be activated at the same time. (Security protocols use extensive processing power.)

To use SSH, you must have an SSH client installed. Most Linux and other UNIX® platforms include an SSH client as part of their installation, but Microsoft Windows operating systems do not. SSH clients are available from various vendors.

•Configure the port settings for Telnet and SSH.

•Select one or more data encryption algorithms for SSH version 1, SSH version 2, or both.

•In the Web interface, specify a host key file previously created with the APC Security Wizard and load it to the Rack PDU.

From a command line interface, such as the command prompt on Windows operating systems, you can use FTP or Secure CoPy (SCP) to transfer the host key file. You must transfer the file to location /sec on the Rack PDU.

If you do not specify a host key file, the Switched Rack PDU generates an RSA host key of 768 bits, instead of the 1024-bit RSA host key that the Wizard creates. The Rack PDU can take up to 5 minutes to create this host key, and SSH is not accessible during that time.

•Display the fingerprint of the SSH host key for SSH versions 1 and 2. Most SSH clients display the fingerprint at the start of a session. Compare the fingerprint displayed by the client to the fingerprint that you recorded from the Web interface or control console of the Rack PDU.

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