Diffie-Hellman Key Exchange Insufficient Group Strength

To address this security issue two thing need to be done, firstly an SSL certificate with a key length of 2048 bits needs to be added to the keystore and secondly a directive needs to be added to the system.properties file.

To add the directive to the system.properties file:

Stop the service

edit the system.properties file located in the Program Files\RF Code\CenterScape\conf directory (note you must run Notepad or an other editor as administrator)

Add the following line to the file:   

https.exclude.cipher.suites=TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_256_GCM_SHA384

Save the file

Restart the service.