nmap v2.05 - The Network Mapper - nmap is a utility for port scanning large networks, although it works fine for single hosts. General features include: Vanilla TCP connect() scanning, TCP SYN (half open) scanning, TCP FIN, Xmas, or NULL (stealth) scanning, TCP ftp proxy (bounce attack) scanning, SYN/FIN scanning using IP fragments (bypasses packet filters), UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap supports a number of performance and reliability features such as dynamic delay time calculations, packet timeout and retransmission, parallel port scanning, detection of down hosts via parallel pings. Nmap also offers flexible target and port specification, decoy scanning, determination of TCP sequence predictability characteristics, and output to machine parseable or human readable log files. This latest release features: Over 25% more OS fingerprints, Nmap now comes with its own nmap-services, Increased the maximum number of OS guesses nmap will make, Random number generation now takes advantage of the /dev/urandom or /dev/random, Machine parseable logs are now more machine parseable, nmap-fingerprintinting-article, CHANGELOG file, updated docs, many bugfixes, code optimizations, much more. This is one of the most useful security tools ever created. Your security/network toolbag is incomplete without nmap! Check out the nmap directory for lots of nmap "add-ons" and accessories.
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