Hello, Currently we are using TLS for client/server communication, I would like to do debug using wireshark but got problem in decrypting. I have seen Server Hello with only one single Cipher Suite of ECDHE, I've tried changing "vars" into AES256-SHA, though with the same result; I wonder if anything had been missed or I'm in a wrong way? Below is the detail, TKS for any advice. Scenario: Client --> Kamailio PSTN --> External in FreeSWITCH FreeSWITCH version: 1.6.20-37-987c9b9~64bit (-37-987c9b9 64bit) ----------------------------Wireshark debug---------------------------- private key: agent.pem FreeSWITCH to Kamailio Cipher Suite : TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014) ----------------------------vars.xml--------------------------------------- <X-PRE-PROCESS cmd="set" data="sip_tls_ciphers=AES256-SHA"/> Best Regards, Rex Lin