# nxc > Network service enumeration and exploitation tool. > Some subcommands such as `nxc smb` have their own usage documentation. > More information: . - [L]ist available modules for the specified protocol: `nxc {{smb|ssh|ldap|ftp|wmi|winrm|rdp|vnc|mssql}} -L` - List the options available for the specified module: `nxc {{smb|ssh|ldap|ftp|wmi|winrm|rdp|vnc|mssql}} -M {{module_name}} --options` - Specify an option for a module: `nxc {{smb|ssh|ldap|ftp|wmi|winrm|rdp|vnc|mssql}} -M {{module_name}} -o {{OPTION_NAME}}={{option_value}}` - View the options available for the specified protocol: `nxc {{smb|ssh|ldap|ftp|wmi|winrm|rdp|vnc|mssql}} --help`