APC AP8868 User's Guide download pdf (Page 72)

64Metered Rack PDU User Guide

Console

Path: Administration > Network > Console >

options

Note: To use SSH, you must have an SSH client installed. Most Linux and other UNIX

platforms

include an SSH client, but Microsoft Windows operating systems do not. Clients are available from

various vendors.

Option Description

access Choose one of the following for access by Telnet or Secure SHell (SSH):

• Disable: Disables all access to the command line interface.

• Enable Telnet (the default): Telnet transmits user names, passwords, and data without

encryption.

• Enable SSH: SSH transmits user names, passwords, and data in encrypted form, providing

protection from attempts to intercept, forge, or alter data during transmission.

Configure the ports to be used by these protocols:

•

Telnet Port: The Telnet port used to communicate with the Rack PDU (23 by default). You can

change the port setting to any unused port from 5000 to 32768 for additional security. Users must

then use a colon (:) or a space, as required by your Telnet client program, to specify the non-

default port. For example, for port 5000 and an IP address of 152.214.12.114, your Telnet client

requires one of the these commands:

telnet 152.214.12.114:5000

telnet 152.214.12.114 5000

• SSH Port: The SSH port used to communicate with the Rack PDU (22 by default). You can

change the port setting to any unused port from 5000 to 32768 for additional security. See the

documentation for your SSH client for the command line format required to specify a non-default

port.

ssh host

key

Status indicates the status of the host key (private key):

• SSH Disabled: No host key in use: When disabled, SSH cannot use a host key.

• Generating: The Rack PDU is creating a host key because no valid host key was found.

• Loading: A host key is being activated on the Rack PDU.

• Valid: One of the following valid host keys is in the /ssh directory (the required location on the

Rack PDU):

•A 1024-bit or 2048-bit host key created by the Security Wizard

•A 2048-bit RSA host key generated by the Rack PDU

Add or Replace: Browse to and upload a host key file created by the Security Wizard.

To use the APC Security Wizard, see the Security Handbook, available at www.apc.com.

Note:To reduce the time required to enable SSH, create and upload a host key in advance. If you

enable SSH with no host key loaded, the

Rack PDU takes up to one minute to create a

host key, and the SSH server is not accessible during that time.

Remove: Remove the current host key.

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APC AP8868 User's Guide Page 72

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