How FastIpScan Cuts Network Discovery Time in Half

FastIpScan Tutorial: Quick IP Sweeps and Live Host Detection

What FastIpScan does

FastIpScan is a lightweight network-scanning tool designed for rapid IP sweeps and quick detection of live hosts on local networks and ranges you specify. It prioritizes speed and low resource use while providing useful output for inventory, troubleshooting, and basic reconnaissance.

When to use it

• Rapidly discover active devices on a LAN
• Verify DHCP or subnet allocations after changes
• Quickly find hosts before running deeper scans (port/service discovery)
• Routine network inventory checks

Safety and legality

Only scan networks you own or have explicit permission to test. Unauthorized scanning can violate policies or laws.

Installation (Linux/macOS/Windows)

1. Download the latest release from the official project page or install via package manager if available.
2. Make the binary executable (Linux/macOS):

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   chmod +x fastipscan 

3. Move to a directory in PATH (optional):

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   sudo mv fastipscan /usr/local/bin/ 

Basic usage

Run a quick sweep of a subnet:

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fastipscan 192.168.1.0/24 

Scan a range:

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fastipscan 192.168.1.100-192.168.1.200 

Scan multiple targets:

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fastipscan 10.0.0.0/24 192.168.1.0/24 

Common options (examples)

• Set concurrency (threads) for faster scans:

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fastipscan -t 200 192.168.1.0/24 

• Specify timeout (milliseconds):

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fastipscan –timeout 300 192.168.1.0/24 

• Output formats (plain, JSON, CSV):

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fastipscan –format json 10.0.0.0/24 > results.json 

• Perform ICMP-only sweep:

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fastipscan –icmp 192.168.1.0/24 

• Perform TCP SYN ping to a port (e.g., 80):

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fastipscan –syn –port 80 192.168.1.0/24 

Interpreting results

Typical output shows IP, latency, and status (alive/dead). For JSON/CSV, columns include timestamp, ip, rttms, method (ICMP/TCP), and hostname (if reverse DNS found). Use results to:

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fastipscan -t 300 192.168.0.0/22 –format csv > scan.csv 

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grep alive scan.csv | cut -d, -f2 > livehosts.txt 

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nmap -iL live_hosts.txt -sT -Pn