To configure TLS security settings on both the Client side and the Server side, proceed to TLS security settings.

Figure 403: <Protocol> Control > Settings > TLS security settings - configuring TLS security settings

• Cipher strength specifies the cipher string OpenSSL will use. The following options are possible:

  • Recommended: this setting only uses ciphers with adequate security level.

  • Custom: this setting allows you to specify the list of ciphers you want to permit SPS to use in the connection. This setting is only recommended to ensure compatibility with older systems. For more details on customizing this list, check the 'openssl-ciphers' manual page on your SPS appliance.

    For example: ALL:!aNULL:@STRENGTH

• Minimum TLS version specifies the minimal TLS version SPS will offer during negotiation. The following options are possible:

  • TLS 1.2: this setting only offers TLS version 1.2 during the negotiation. This is the recommended setting.

  • TLS 1.1: this setting offers TLS version 1.1 and later versions during the negotiation.

  • TLS 1.0: this setting offers TLS version 1.0 and later versions during the negotiation.