If you get a certificate chain and handshake like below, you know the server in question supports TLS 1.2/1.3. Run the following command in terminal, replacing with your own domain:įor TLS 1.2: openssl s_client -connect :443 -tls1_2įor TLS 1.3: openssl s_client -connect :443 -tls1_3 Java HotSpot(TM) 64-Bit Server VM (build 23.OpenSSL is a full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols, and is installed on many distributions of Linux by default. Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Here's the Java version: $ /Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/bin/java -version (The problems with SSLv3 predate POODLE by at least 15 years, but Java/Oracle/Developers did not respect basic best practices, so users like you and me are left with cleaning up the mess). Note: since POODLE, I would like to administratively disable SSLv3 system wide.
How do I administratively enable TLS 1.1 and 1.2 system wide?
I'm interested in enabling the protocols on a system wide setting (perhaps through a config file), and not a per-Java-application solution. SunJSSE does not enable TLS 1.1 or TLS 1.2 by default for client Refuse to talk to TLS 1.1 or TLS 1.2 clients. Some servers do not implement forward compatibility correctly and From Java Cryptography ArchitectureĪlthough SunJSSE in the Java SE 7 release supports TLS 1.1 and TLSġ.2, neither version is enabled by default for client connections. Java 7 disables TLS 1.1 and 1.2 for clients.
0 kommentar(er)
