[Original] Introduction to NMAP network port scanning tools

[Original] Introduction to NMAP network port scanning tools

I NMAP Introduction

NMAP is a port scanning tool for large networks, although it is also suitable for single-host scanning. In different situations, you may need to hide, scan across the firewall, or use different protocols for scanning, such as UDP, TCP, and ICMP. It supports: vanilla TCP connect scan, tcp syn (semi-open) scan, tcp fin, Xmas, or null (hidden) scan, tcp ftp Proxy (springboard) scan, SYN/fin ip Fragment scan (through some packet filters), tcp ack and window scan, UDP listening ICMP port cannot deliver scan, ICMP scan (crazy Ping), TCP Ping scanning, direct RPC scanning (no port ing), TCP/IP fingerprint recognition remote operating system, and reverse Identity Authentication scanning. NAMP also supports performance and reliability statistics, such as dynamic latency computing, packet timeout and forwarding, parallel port scanning, and detection of lower-layer hosts through parallel Ping.

 

2. Official Website

Http://nmap.org/download

Download Windows Version: nmap-6.25-setup.exe

3. Installation (omitted)

Iv nmap Functions

(1) Ping Scanning)

(2) Port Scanning)

(3) Stealth Scanning)

(4) UDP scan (UDP scanning)

(5) OS Fingerprinting)

(6) ident scan (ident scannining)

5. Explanation of NMAP commands (omitted)

There are a large number of NMAP command lines. If you want to query details, we recommend that you check Baidu Library!