Fed0t Posted October 23, 2011 Report Posted October 23, 2011 NMAP(Network Mapper) is one of the most basic & advanced fingerprinting tool.I recommend this tool to everyone.Basically NMAP is port scanner with advanced features like host identification topology etcThe six port states recognized by NmapOPEN An application is actively accepting TCP connections, UDP datagrams or SCTP associations on this port. Finding these is often the primary goal of port scanning. Security-minded people know that each open port is an avenue for attack. Attackers and pen-testers want to exploit the open ports, while administrators try to close or protect them with firewalls without thwarting legitimate users. Open ports are also interesting for non-security scans because they show services available for use on the network. CLOSED Quote
