[openvpn] TLS error: Unsupported protocol
openvpn 연결시 “TLS error: Unsupported protocol” 오류 발생 상황 openvpn server version : 2.3 openvpn client verser : 2.4(latest) 에러메세지 Oct 23 14:45:05 localhost openvpn[5897]: TLS error: Unsupported protocol. This typically indicates that client and server have no common TLS version enabled. This can be caused by mismatched tls-version-min and tls-version-max options on client and server. If your OpenVPN client is between v2.3.6 and v2.3.2 try adding tls-version-min 1.0 to the client configuration to use TLS 1.0+ instead of TLS 1.0 only Oct 23 14:45:05 localhost openvpn[5897]: OpenSSL: error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol Oct 23 14:45:05 localhost openvpn[5897]: TLS_ERROR: BIO read tls_read_plaintext error Oct 23 14:45:05 localhost openvpn[5897]: TLS Error: TLS object -> incoming plaintext read error Oct 23 14:45:05 localhost openvpn[5897]: TLS Error: TLS handshake failed Oct 23 14:45:05 localhost openvpn[5897]: Fatal TLS error (check_tls_errors_co), restarting Oct 23 14:45:05 [ more… ]
