The Health Check feature enables you to view the key security settings in your organization, such as login access policies, password policies, and so on, and compare these settings to the security standards recommended by Salesforce.
To access the Health Check settings, navigate to Setup | Security Controls | Health Check where you will be presented with a page as shown in the following screenshot:
The Health Check page displays actual, and Salesforce recommended, values for the following security controls: Login Access Policies; Network Access; Password Policies; Remote Site Settings; Session Settings.
Within the page, High-Risk and Medium-Risk settings are shown with details about how they compare against the Salesforce recommended (standard) values. Links are provided within this screen so you can modify any of the given security settings along with a summary health check score that shows how your instance compares to the standard baseline recommended by Salesforce...