# Infrastructure security in Amazon IoT SiteWise
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As a managed service, Amazon IoT SiteWise is protected by Amazon global network security. For information about Amazon security services and how Amazon protects infrastructure, see [Amazon Cloud Security](https://www.amazonaws.cn/security/). To design your Amazon environment using the best practices for infrastructure security, see [Infrastructure Protection](https://docs.amazonaws.cn/wellarchitected/latest/security-pillar/infrastructure-protection.html) in *Security Pillar Amazon Well‐Architected Framework*.

You use Amazon published API calls to access Amazon IoT SiteWise through the network. Clients must support the following:
+ Transport Layer Security (TLS). We require TLS 1.2 and recommend TLS 1.3.
+ Cipher suites with perfect forward secrecy (PFS) such as DHE (Ephemeral Diffie-Hellman) or ECDHE (Elliptic Curve Ephemeral Diffie-Hellman). Most modern systems such as Java 7 and later support these modes.

SiteWise Edge gateways, which run on Amazon IoT Greengrass, use X.509 certificates and cryptographic keys to connect and authenticate to the Amazon Cloud. For more information, see [Device authentication and authorization for Amazon IoT Greengrass](https://docs.amazonaws.cn/greengrass/v1/developerguide/device-auth.html) in the *Amazon IoT Greengrass Version 1 Developer Guide*.