When you create or configure an HTTPS listener for a high-performance Classic Load Balancer (CLB) instance, you can select a Transport Layer Security (TLS) security policy.

Select a TLS security policy

When you create or configure an HTTPS listener, you can modify the advanced settings on the SSL Certificates page and select a TLS security policy. For more information, see Add an HTTPS listener. Configure a listener

TLS security policies

A TLS security policy contains TLS protocol versions and cipher suites that are available for HTTPS.

TLS security policy Feature Supported TLS version Supported cipher suite
tls_cipher_policy_1_0 Provides optimal compatibility and basic security TLS 1.0, TLS 1.1, and TLS 1.2 ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-SHA256, ECDHE-ECDSA-AES256-SHA384, 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-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA, AES128-SHA, AES256-SHA, and DES-CBC3-SHA
tls_cipher_policy_1_1 Provides high compatibility and standard security TLS 1.1 and TLS 1.2 ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-SHA256, ECDHE-ECDSA-AES256-SHA384, 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-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA, AES128-SHA, AES256-SHA, and DES-CBC3-SHA
tls_cipher_policy_1_2 Provides high compatibility and advanced security TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-SHA256, ECDHE-ECDSA-AES256-SHA384, 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-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA, AES128-SHA, AES256-SHA, and DES-CBC3-SHA
tls_cipher_policy_1_2_strict Supports only perfect forward secrecy (PFS) cipher suites and provides premium security TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-SHA256, ECDHE-ECDSA-AES256-SHA384, ECDHE-RSA-AES128-GCM-SHA256, ECDHE-RSA-AES256-GCM-SHA384, ECDHE-RSA-AES128-SHA256, ECDHE-RSA-AES256-SHA384, ECDHE-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, and ECDHE-RSA-AES256-SHA
tls_cipher_policy_1_2_strict_with_1_3 Supports only PFS cipher suites and provides premium security TLS 1.2 and TLS 1.3 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-RSA-AES128-GCM-SHA256, ECDHE-RSA-AES256-GCM-SHA384, ECDHE-RSA-AES128-SHA256, ECDHE-RSA-AES256-SHA384, ECDHE-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, and ECDHE-RSA-AES256-SHA
Note TLS 1.3 is supported in the following regions:
  • UK (London)
  • China (Qingdao)
  • China (Hohhot)
  • China (Chengdu)
  • Singapore (Singapore)
  • Japan (Tokyo)
  • India (Mumbai)
  • Australia (Sydney)
  • Malaysia (Kuala Lumpur)
  • US (Silicon Valley)
  • US (Virginia)
  • Germany (Frankfurt)
  • UAE (Dubai)
hybrid_cipher_policy_1_0 Provides high compatibility and premium security Supports SM and international cipher suites ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-SHA256, ECDHE-ECDSA-AES256-SHA384, 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-ECDSA-AES128-SHA, ECDHE-ECDSA-AES256-SHA, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA, AES128-SHA, AES256-SHA, DES-CBC3-SHA, and ECC-SM2-WITH-SM4-SM3

Cipher suites supported by TLS security policies

TLS security policy 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, and 1.0 1.1 and 1.2 1.2 1.2 1.2 and 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 - - - -
Note The ✔ sign in the preceding table indicates that a cipher suite is supported, while the - sign indicates that a cipher suite is not supported.