GFI LANguard Network Security Scanner checks networks for possible security vulnerabilities by scanning the entire network for missing security patches, services packs, open shares, open ports, unused user accounts and more. With this information (displayed in customizable reports), administrators can easily lock down their network against hackers. GFI LANguard Network Security Scanner is also a complete patch management solution. It can remotely deploy missing patches and service packs in applications and operating systems. The GFI LANguard Network Security Scanner is the leading Windows security scanner.