GFI LANguard Network Security Scanner (LANNSS) is a tool to audit network security and proactively secure it. GFI LANguard N.S.S. is free for non-commercial use! LANNSS scans entire networks from a 'hacker's' perspective, and analyses machines for open ports, shares, security alerts/vulnerabilities, service pack level, installed hotfixes and other NETBIOS information such as hostname, logged on
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