--tls-version="TLSv1.3" --tls-version="TLSv1,TLSv1.2" --tls-version="TLSv1.1,TLSv1.3" These values do have holes and should not be used: Connecting to the MySQL Server Using Command Options For details, see Section 6.3.2, “Encrypted Connection TLS Protocols and Ciphers” . To specify which TLS protocols the server permits, set the  tls_version  system variable. This section describes options that enable client programs to control use of compression for connections to the server. For additional information and examples showing how to use them, see Section 4.2.8, “Connection Compression Control” . Command Options for Connection Compression Table 4.5 Connection-Compression Option Summary Option Name Description Introduced Deprecated --compress Compress all information sent between client and server 8.0.18 --compression-algorithms Permitted compression algorithms for connections to server 8.0.18 --zstd-compression-level Compression level for connections to server that use zstd compression 8.0.18 • --compress ,  -C • --compression-algorithms= value • --zstd-compression-level= level Compress all information sent between the client and the server if possible. As of MySQL 8.0.18, this option is deprecated. Expect it to be removed in a future version of MySQL. See Configuring Legacy Connection Compression. The permitted compression algorithms for connections to the server. The available algorithms are the same as for the  protocol_compression_algorithms  system variable. The default value is uncompressed . This option was added in MySQL 8.0.18. The compression level to use for connections to the server that use the  zstd  compression algorithm. The permitted levels are from 1 to 22, with larger values indicating increasing levels of compression. The default  zstd  compression level is 3. The compression level setting has no effect on connections that do not use  zstd  compression. This option was added in MySQL 8.0.18. 4.2.4 Connecting to the MySQL Server Using Command Options 364