🔍 Advanced Nmap Service Scanner – Bash Script

This blog post introduces a powerful Bash script designed to automate and streamline network service scanning using Nmap. The script uses service-specific plugins, checks only open ports, logs results with timestamps, and outputs color-coded terminal feedback.

📂 View it on GitHub: github.com/ElusiveHacker/Tanker

🚀 Features

✅ Scans only open ports for efficiency
📜 Uses Nmap plugins/scripts tailored to each service
🎨 Color-coded terminal output:
- 🟡 Yellow for open ports
- 🔵 Blue for closed/filtered ports
📅 Start and end time displayed and logged
🕒 Total scan duration shown in the report
🗂️ Full report saved in scan_report.txt

⚙️ Requirements

A Linux/Unix system with bash installed
Nmap installed and in your $PATH

📦 Services Scanned

The script includes a pre-configured list of commonly scanned services:

Service	Port	Protocol	Nmap Script(s)
telnet	23	TCP	telnet-ntlm-info
ssh	22	TCP	ssh2-enum-algos
msrpc	135	TCP	msrpc-enum
nbstat	137	TCP	nbstat
ldap	389	TCP	ldap-rootdse
http	80	TCP	http-headers
smtp	25	TCP	smtp-open-relay, smtp-strangeport
wsman	5985	TCP	http-headers

🛠️ How to Use

1️⃣ Give execute permission and run the script:

chmod +x nmap_service_scanner.sh
./nmap_service_scanner.sh

2️⃣ When prompted, enter a valid IP or CIDR:

Enter an IP address or CIDR range: 192.168.1.0/24

📄 Output & Report

🖥️ Terminal output is color-coded for quick review
📝 All detailed results (including plugin output) are saved to scan_report.txt
⏱️ Includes:
- Start time
- End time
- Total duration in seconds

📌 Notes

➡️ UDP scans are slower and depend on the defined services. You can extend or modify the service list directly inside the script.

🧑‍💻 About

This tool was developed to simplify focused Nmap scanning for sysadmins, security testers, and red teams. Feel free to fork, improve, or suggest enhancements!

🔗 GitHub Repository: github.com/ElusiveHacker/Tanker