Configuring Appliances for FIPS-Compliant Cryptography : Enabling FIPS mode
  
Enabling FIPS mode
FIPS mode ensures the system uses only FIPS-compliant encryption algorithms.
After you install the FIPS license, you can enable FIPS mode.
Before you can enable FIPS mode, you need to ensure passwords for user accounts use FIPS-compliant encryption. For details, see Account passwords.
To enable FIPS mode, connect to the CLI and enter these commands:
amnesiac > enable
amnesiac # configure terminal
amnesiac (config) # fips enable
You must save the configuration and reload the system to enable FIPS mode.
amnesiac (config) # write memory
amnesiac (config) # reload
Rebooting...
amnesiac (config) # 
Restarting the system initializes supported features with any FIPS-specific settings and data.