Supported TLS cipher suites

AtScale supports a few sets of TLS 1.2 cipher suites: one for the Web front-end, one for the engine, and one for LDAPS connections.

Front-end

The AtScale front-end application supports these cipher suites:

• TLS_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256

info

Important: It is not recommended to use the TLS_RSA_WITH_AES_256_GCM_SHA384 cipher.

If you need to configure which of these are enabled:

1. Log in to the system where AtScale is installed.

2. Open the /opt/atscale/current/conf/modeler/app.conf file with a text editor.

3. Add the http.ssl.cipherSuites setting, as shown in the example below; or update it, if it is present:

   http.ssl.cipherSuites="TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256"

   Note the following:

   • This is an example with two suites specified. Set your own suites as needed.
   • The suites must be separated with comma signs (,).
   • The list of suites must be in quotes, as shown in the example.

AtScale engine

The following JVM cipher suites are supported by the AtSale Engine:

• TLS_DHE_DSS_WITH_AES_128_CBC_SHA
• TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
• TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
• TLS_DHE_DSS_WITH_AES_256_CBC_SHA
• TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
• TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
• TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
• TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_128_CBC_SHA256
• TLS_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA256
• TLS_RSA_WITH_AES_256_GCM_SHA384

LDAPS

AtScale supports the following cipher suites as a client for LDAPS sessions triggered by NTLM requests:

• TLS_AES_128_GCM_SHA256
• TLS_AES_256_GCM_SHA384
• TLS_CHACHA20_POLY1305_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
• TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV