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Read security and authorization standards and protocols here.
Configuration Settings:
Goto Settings (formerly Global Properties from 1.8 downwards) in your OpenMRS server Administration > Advanced Settings and navigate to section having properties prefixed with security.*.
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- security.passwordCannotMatchUsername
- security.passwordCustomRegex
- security.passwordMinimumLength
- security.passwordRequiresDigit
- security.passwordRequiresNonDigit
- security.passwordRequiresUpperAndLowerCase .
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Save settings and your are done!