A
cipher suite is a named combination of algorithms used in TLS: key exchange + authentication + encryption + MAC. Example: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384.
TLS 1.3 reduced cipher suites to only strong options. Weak cipher suites (RC4, DES, MD5) must be disabled. Always configure TLS to offer only strong cipher suites.