Startup-Config: Permanent Configuration File
The Startup-Config is the file containing permanent and persistent configurations of a device, stored in NVRAM (Non-Volatile Random Access Memory).
To view the files present in the Flash memory, you can execute the following command:
Router#show flashEnhancing Security on IOS File in Flash Memory
Security measures can be implemented to restrict certain operations like viewing, copying, modifying, or deleting the IOS file present in the Flash memory while in privileged mode.
To prevent unauthorized operations on the IOS file in Flash memory:
Router(config)#secure boot-imageStrengthening Security on Startup-config File (Permanent Configuration File in NVRAM)
To enhance security and prevent unauthorized access or modifications to the Startup-config file in NVRAM:
Router(config)#secure boot-configFlash Memory Security Measures:
It’s critical to secure the IOS file within the Flash memory as it contains the operating system. By using the secure boot-image command, it prevents unauthorized changes or deletions of the IOS file, thereby ensuring the integrity and authenticity of the operating system.
NVRAM Protection:
Protecting the Startup-config file in NVRAM is equally important. Enabling the secure boot-config command enhances the security of this file, safeguarding critical device configurations against unauthorized alterations, ensuring stability, and preventing potential security breaches.