为全球加速实例配置HTTPS监听时，支持选择TLS安全策略。系统默认选择tls_cipher_policy_1_0安全策略，若您有更高的安全要求，可以根据需要选择更高等级的TLS安全策略。
TLS安全策略
TLS安全策略包含HTTPS可选的TLS协议版本和配套的加密算法套件。TLS协议版本越高，HTTPS通信的安全性越高，但是相较于低版本TLS协议，高版本TLS协议对浏览器的兼容性较差。TLS安全策略对应的TLS协议版本和配套的加密算法套件如下：
安全策略 | 支持TLS版本 | 支持加密算法套件 |
tls_cipher_policy_1_0 | TLSv1.0、TLSv1.1和TLSv1.2 |
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tls_cipher_policy_1_1 | TLSv1.1和TLSv1.2 |
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tls_cipher_policy_1_2 | TLSv1.2 |
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tls_cipher_policy_1_2_strict | TLSv1.2 |
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tls_cipher_policy_1_2_strict_with_1_3 | TLSv1.2及TLSv1.3 |
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TLS安全策略支持的加密算法套件
安全策略 | tls_cipher_policy_1_0 | tls_cipher_policy_1_1 | tls_cipher_policy_1_2 | tls_cipher_policy_1_2_strict | tls_cipher_policy_1_2_strict_with_1_3 | |
TLS | 1.2、1.1及1.0 | 1.1及1.2 | 1.2 | 1.2 | 1.2及1.3 | |
CIPHER | ECDHE-RSA-AES128-GCM-SHA256 | ✔ | ✔ | ✔ | ✔ | ✔ |
ECDHE-RSA-AES256-GCM-SHA384 | ✔ | ✔ | ✔ | ✔ | ✔ | |
ECDHE-RSA-AES128-SHA256 | ✔ | ✔ | ✔ | ✔ | ✔ | |
ECDHE-RSA-AES256-SHA384 | ✔ | ✔ | ✔ | ✔ | ✔ | |
AES128-GCM-SHA256 | ✔ | ✔ | ✔ | - | - | |
AES256-GCM-SHA384 | ✔ | ✔ | ✔ | - | - | |
AES128-SHA256 | ✔ | ✔ | ✔ | - | - | |
AES256-SHA256 | ✔ | ✔ | ✔ | - | - | |
ECDHE-RSA-AES128-SHA | ✔ | ✔ | ✔ | ✔ | ✔ | |
ECDHE-RSA-AES256-SHA | ✔ | ✔ | ✔ | ✔ | ✔ | |
AES128-SHA | ✔ | ✔ | ✔ | - | - | |
AES256-SHA | ✔ | ✔ | ✔ | - | - | |
DES-CBC3-SHA | ✔ | ✔ | ✔ | - | - | |
TLS_AES_128_GCM_SHA256 | - | - | - | - | ✔ | |
TLS_AES_256_GCM_SHA384 | - | - | - | - | ✔ | |
TLS_CHACHA20_POLY1305_SHA256 | - | - | - | - | ✔ | |
TLS_AES_128_CCM_SHA256 | - | - | - | - | ✔ | |
TLS_AES_128_CCM_8_SHA256 | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES128-GCM-SHA256 | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES256-GCM-SHA384 | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES128-SHA256 | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES256-SHA384 | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES128-SHA | - | - | - | - | ✔ | |
ECDHE-ECDSA-AES256-SHA | - | - | - | - | ✔ | |
上表中的✔表示支持，-表示不支持。
选择TLS安全策略
在您添加或者配置HTTPS监听时，系统默认选择tls_cipher_policy_1_0安全策略。您可以通过修改高级配置选择TLS安全策略。具体操作，请参见添加HTTP或HTTPS协议监听。