vsftpd FTP daemon in Red Hat Linux 9 is not compiled against TCP wrappers (tcp_wrappers) but is installed as a standalone service, which inadvertently prevents vsftpd from restricting access as intended.Referenceshttp://www.securityfocus.com/bid/7253https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A634http://www.redhat.com/support/errata/RHSA-2003-084.html