The Cygna Labs Sapphire v5 appliance provides basic level performance with superior reliability and security with the convenience of pre-packaged DHCP/DNS/IPAM (DDI) appliances. The Sapphire v5 can be configured and managed using your IPControl implementation (also available on Azure as Sapphire Ev10 or Ev20) to extend your DDI capabilities to Azure. Sapphire appliances are built from the ground up for security and robustness. Our appliances offer numerous security features including a hardened operating system (OS), minimal open ports, uninterruptible boot process, jailed file system, and rate limiting to mitigate denial of service (DOS) attacks, DNSSEC validation, DNS firewall, DNS tunneling detection and shutdown, and DNS response rate limiting, among others.