Security/Server Side TLS - MozillaWikiThe ordering of cipher suites in the Old configuration is very important, as it determines the priority with which algorithms are selected. OpenSSL will ignore cipher suites it doesn't understand, so always use the full set of cipher suites below, in their recommended order. The use of the Old configuration with modern versions of OpenSSL may require custom builds with support for deprecated ciphe
httpsだからというだけで安全？調べたら怖くなってきたSSLの話!？ - Qiita
