PortScanner

PortScanner is a versatile and efficient multithreaded tool designed to scan ports on remote hosts, providing you with additional information about open ports - banner information, and TLS/SSL verification. This tool is designed to help you assess the security and services of a target system quickly and effectively.

Features

• Multithreaded Scanning: PortScanner uses multithreading to scan ports concurrently, making it faster and more efficient in discovering open ports.

• Banner Printing: It can retrieve banner information from open ports, giving you insights into the services running on those ports.

• TLS/SSL Verification: PortScanner can verify TLS/SSL certificates for secure connections, ensuring that you get complete information about encrypted services.

Usage

To use PortScanner, simply specify the desired flags and provide the IP address or hostname of the target system as an argument. Here are the available flags:

• -v (Verbose mode): Provides detailed output, including banner information and SSL verification details.

• -q (Quick scan for TLS/SSL related ports): Scans common TLS/SSL-related ports.

• -s (Scan system ports): Scans well-known system ports (0-1023).

• -u (Scan user ports): Scans registered user ports (1024-49151).

• -p (Scan private ports): Scans dynamic and/or private ports (49152-65535).

• -a (Scan all ports): Scans all available ports.

• -h (Help): Displays the help message, providing a quick reference to the available flags.

Example usage:

./portscan -q 192.168.1.1

Building the Program

PortScanner can be easily built using the provided Makefile. Before building, make sure you have the following prerequisites installed:

• g++: The C++ compiler is required to build and run the program.

• libcurl4-openssl-dev: This library is essential for handling network operations, including TLS/SSL verification.

Follow these steps to build the program:

1. Clone or download the repository to your local machine.

2. Place the Makefile in the same directory as your source files.

3. Open a terminal and navigate to the directory containing the Makefile.

4. Run make to build your PortScanner program.

5. The compiled binary, named portscan, will be created in the same directory.

Compatibility

PortScanner is designed to work on both macOS and Linux operating systems, providing a consistent and reliable experience across these platforms.

License

This project is licensed under the GNU General Public License v3.0 License - see the LICENSE file for details.

Acknowledgments

• PortScanner is built upon the libcurl library, which provides robust networking capabilities.

• Special thanks to the open-source community for providing valuable tools and libraries.