For anyone wondering, Wikipedia has a nice table that show which browser support TLS 1.1/1.2, and which don't. https://en.wikipedia.org/wiki/Transport_Layer_Se

For anyone wondering, Wikipedia has a nice table that show which browser support TLS 1.1/1.2, and which don't. https://en.wikipedia.org/wiki/Transport_Layer_Security#Web_browsers https://en.wikipedia.org/wiki/Transport_Layer_Security#Web_b... Basically: - Chrome Stable support TLS 1.1, Chrome Beta/Canary support TLS 1.2 - Firefox Stable support TLS 1.0. You can enable TLS 1.1 by setting "security.tls.version.max" to "2" in about:config. Support is not considered stable, and you might have some problems: https://bugzilla.mozilla.org/show_bug.cgi?id=733647 https://bugzilla.mozilla.org/show_bug.cgi?id=733647 - Firefox Aurora/Nightly supports TLS 1.0. You can enable TLS 1.1/1.2 by setting "security.tls.version.max" to "3" in about:config. Like Firefox Stable, support is not considered stable and you might have some problems. - Opera 15 support TLS 1.1. - Opera 12 support TLS 1.0. You can enable TLS 1.1/1.2 by checking "Enable TLS v1.1" and "Enable TLS v1.2" in opera:config - IE 10 support TLS 1.0. You can enable TLS 1.1/1.2 by enabling them in Windows, and forcing IE to use them. See http://netsekure.org/2009/10/tls-1-2-in-windiows-7/ http://netsekure.org/2009/10/tls-1-2-in-windiows-7/ You can use sites like https://sni.velox.ch/ https://sni.velox.ch/ and https://cc.dcsec.uni-hannover.de/ https://cc.dcsec.uni-hannover.de/ to see which version of TLS is your browser using.