(A multi-threaded, plugin-enabled vulnerability scanner. The main functions of X-Scan are any support for NASL (Nessus Attack Scripting Language: NessusAttackScriptingLanguage), view service type, remote operating system type (version) view, weak username/password matching, etc. The latest version can be obtained here. Please note that this is a Chinese website (the original text is in English, so the original author reminds English readers that this is a Chinese website). This tool is quite special and may report poison, please download and use it carefully if you don't know it.)