Enhanced Network Scanner

A professional-grade network analysis and security assessment tool for authorized network administrators and security professionals. This tool helps identify devices, services, and potential security issues within your network infrastructure.

⚠️ Important Notice

This tool is for AUTHORIZED USE ONLY. You must have explicit permission to scan any network. Unauthorized scanning may be illegal and unethical.

Features

Core Functionality

• Network Discovery: Advanced ARP-based device detection
• OS Detection: Operating system fingerprinting
• Service Analysis: Port scanning and service identification
• Device Information:
  • MAC address vendor lookup
  • Hostname resolution
  • Response time analysis
  • Gateway detection

Security Assessment

• Port Analysis: Identifies open ports and running services
• Service Fingerprinting: Banner grabbing and service version detection
• Network Topology: Maps network structure and identifies key devices
• Vulnerability Checking: Basic security configuration assessment
• Security Logging: Comprehensive security event logging

Output Features

• Real-time Display: Live scanning progress and results
• Multiple Formats: CSV and JSON export options
• Detailed Logging: Comprehensive activity logging
• Custom Reports: Configurable output formats

Requirements

System Requirements

• Python 3.8 or higher
• Administrator/root privileges for full functionality
• Network access permissions

Installation

# Clone the repository
git clone https://github.com/yourusername/NetworkScanner.git
cd NetworkScanner

# Install dependencies
pip install -r requirements.txt

Usage Guide

Basic Commands

1. Basic Network Scan:

python network_scanner.py 192.168.1.0/24

2. Advanced Scan with Custom Ports:

python network_scanner.py 192.168.1.0/24 -s 2 -p 80 443 3389 8080

3. Full Security Assessment:

python network_scanner.py 192.168.1.0/24 --security-check --format json

Command Line Arguments

Argument	Description	Example
network	Target network in CIDR notation	192.168.1.0/24
-s, --stealth	Stealth level (1-3)	-s 2
-p, --ports	Specific ports to scan	-p 80 443 8080
-f, --format	Output format (csv/json)	-f json
--security-check	Enable security assessment	--security-check

Output Files

1. Scan Results:

   • scan_results_[timestamp].csv: Detailed CSV report
   • scan_results_[timestamp].json: JSON formatted data
   • network_scan.log: Complete scan log

2. Security Reports:

   • security_assessment_[timestamp].txt: Security findings
   • vulnerability_report_[timestamp].txt: Potential vulnerabilities

Log File Locations

./logs/
  ├── network_scan.log       # Main application log
  ├── security_events.log    # Security-related events
  └── error.log             # Error tracking

Security Assessment Features

1. Port Security

• Open port detection
• Service identification
• Common misconfiguration checks
• Default credential testing (requires authorization)

2. Network Analysis

• Device enumeration
• Service mapping
• Network topology
• Gateway configuration

3. Security Checks

• Default port detection
• Service version analysis
• Basic vulnerability assessment
• Configuration review

Best Practices

1. Authorization:

   • Always obtain written permission before scanning
   • Document all scanning activities
   • Follow organization's security policies

2. Network Impact:

   • Use appropriate stealth levels
   • Schedule intensive scans during off-hours
   • Monitor network performance

3. Data Handling:

   • Secure scan results
   • Remove sensitive data from reports
   • Follow data retention policies

Logging and Monitoring

Log Types

1. Network Scan Log:

   • Device discoveries
   • Port scan results
   • Service detections

2. Security Event Log:

   • Potential vulnerabilities
   • Configuration issues
   • Security alerts

3. Error Log:

   • Scan failures
   • Connection issues
   • System errors

Log Format

[TIMESTAMP] [LEVEL] [COMPONENT] Message
Example: [2024-03-14 15:30:45] [INFO] [PortScanner] Found open port 80 on 192.168.1.100

License

MIT License

Copyright (c) 2024 Network Scanner

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

1. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

2. Authorization and Ethical Use:

   • Users must obtain explicit permission before scanning any network
   • The tool shall not be used for malicious purposes
   • Users must comply with all applicable laws and regulations

3. Disclaimer: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

Support

• GitHub Issues: Report bugs and feature requests
• Documentation: Wiki and inline code documentation
• Community: Discussions and contributions welcome

Remember to always use this tool responsibly and legally!