Table of Contents Table of Contents Title and Copyright Information About This Guide Revision History 1 ISR Security Overview Secure Installation Critical Security Services and Settings Creating and Using a Non-Root User Account File Permissions Secure Passwords Firewalld Configuration Overview ISR Firewalld Configuration Modifying ISR Firewalld Configuration ISR Port Usage ISR Certificates Imported Certificates for Secure Communications Signing Keys Additional CSR Details Examples of Generating ISR Component CSRs Managing Expired Keys and Certificates Checking the Expiration Dates of ISR Keys RSS Dashboard FACE Updating Expiring Self-Signed Keys Expiring RSS Certificate Expiring Dashboard Certificate Expiring FACE Certificate Configuring Reduced Security Configuring FACE API Reduced Security ISR Dashboard Cookies Customizing a Log In Banner Supported Ciphers