Configuration file handling task list
83
IPLink Software Configuration Guide
7 • Configuration file handling
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Deleting a specified configuration
This procedure describes how to delete configuration files from the IPLink flash memory region nvram:.
Mode: Administrator execution
Example:
Deleting a specified configuration
The following example shows how to delete a specific configuration from among a set of three available config-
urations in Flash memory. The configuration named minimal is to be deleted, since it is no longer used.
1. Use the command
show nvram:
to list all available configurations.
IPLink#show nvram:
Persistent configurations:
backup
minimal
startup-config
factory-config
2. Delete the configuration named minimal explicitly.
IPLink#erase nvram:minimal
3. Enter again the command
show nvram:
to check if the selected configuration was deleted successfully
from the set of available configurations.
IPLink#show nvram:
Persistent configurations:
backup
startup-config
factory-config
Encrypted file download
This section explains the encrypted configuration download feature of IPLink software.
TFTP as a configuration download mechanism has the advantage of being extremely simple (trivial) and appli-
cable in any network without any requirements for specialized management servers or applications. It has the
disadvantage of being completely insecure.
The security hole of downloading complete configurations—which may contain IP addresses, login names and
passwords for PPP or VoIP registrations—using TFTP becomes particularly pressing in combination with the
auto-provisioning feature which allows large scale distribution of configurations in entire networks.
To alleviate this problem and maintain the simplicity of TFTP downloads support for encrypted configuration
file downloads is introduced.
Goal:
Prevent maliciously intercepted configurations to be readable by unauthorized users.
Step
Command
Purpose
1
node#show nvram:
Lists the loaded configurations
2
node#erase name
Deletes the configuration
name
from the flash memory.