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Files Date: 2002-04-27

Nmap Scanning Utility 2.54 BETA 33
Posted Apr 27, 2002
Authored by Fyodor | Site insecure.org

Nmap is a utility for port scanning large networks, although it works fine for single hosts. Sometimes you need speed, other times you may need stealth. In some cases, bypassing firewalls may be required. Not to mention the fact that you may want to scan different protocols (UDP, TCP, ICMP, etc.). Nmap supports 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 some packet filters), TCP ACK and Window scanning, UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Direct (non portmapper) RPC scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap also 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. Screenshot available here.

Changes: This version contains a huge OS fingerprint update - More than 100 added or changed. Applied fix for an important RPC scanning bug and a nasty OS fingerprinting bug. Does not show uptime when obviously spoofed (eg OpenBSD 3.0).
tags | tool, remote, udp, tcp, protocol, nmap
systems | unix
SHA-256 | d710c16d29c3fa4e2d2a04386cab730494d0118456b7f3e2c25f158f13ef49b7
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