I had wss working with self signed certs and I'm now trying to move to certs from Letsencrypt. I have something working. Connecting to https://myip:port/ I get the green padlock in chrome, but on close inspection Chrome tells me: Your connection to https://myip:port/ is encrypted using an obsolete cipher suite. The connection uses TLS 1.2 The connection is encrypted and authenticated using AES_128_GCM and uses RSA as the key exchange mechanism" Screenshot here: http://imgur.com/tERQUXw When trying to establish a secure websocket with the verto library I get jquery.jsonrpcclient.js:285 WebSocket connection to 'wss://xxx.xxx.xxx.xxx:xxx' failed: WebSocket opening handshake was canceled When inspecting https://webrtc.freeswitch.org:8082/ with Chrome I get the same complaint as with my Letsencrypt certs but verto still works over there. So there's something else that I'm doing wrong. In the FS CLI i get this 2016-05-05 15:15:29.875866 [INFO] mod_verto.c:3997 myip:57884 Client Connect. 2016-05-05 15:15:29.895849 [INFO] mod_verto.c:1973 myip:57884 Starting client thread. 2016-05-05 15:15:29.975863 [DEBUG] mod_verto.c:1820 myip:57884 WS SETUP FAILED [] Any ideas on what else to try? Oivvio