On 2018-09-17 11:23, Gabriele Bulfon wrote: > That may be a possibility, but given that I cannot upgrade at the > moment, how can I check this and maybe change the required cipher to > match? Debugging SSL problems is not really something I do regularly, but you may want to see if changing the settings in the java.security policy helps. Settings to try are: jdk.tls.disabledAlgorithms jdk.certpath.disabledAlgorithms For reference: Java 8 Update 31, disabled SSLv3: http://www.oracle.com/technetwork/java/javase/8u31-relnotes-2389094.html, Java 8 Update 51, disabled some cipher suites, and limitations for DH keys where added: http://www.oracle.com/technetwork/java/javase/8u51-relnotes-2587590.html, similar for Java 8 Update 60: http://www.oracle.com/technetwork/java/javase/8u60-relnotes-2620227.html Java 8 update 71 disabled MD5 hash validation of certificates Java 8 update 121 added restrictions on DSA keysize: http://www.oracle.com/technetwork/java/javase/8u121-relnotes-3315208.html Java 8 Update 141 disabled SHA-1 hashes for the certificate chain: http://www.oracle.com/technetwork/java/javase/8u141-relnotes-3720385.html Java 8 update 161 added limitations for DH keys, made some changes to certificate validation and disabled a number of cipher suites: http://www.oracle.com/technetwork/java/javase/8u161-relnotes-4021379.html Java 8 update 171 disabled some ciphersuites: http://www.oracle.com/technetwork/java/javase/8u171-relnotes-4308888.html Mark
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