NetConnect - TCP/UDP Connection Testing Tool

NetConnect is a simple command-line tool that allows you to create TCP/UDP ports on a server and check connectivity with other servers via multiple ports. It provides both interactive menu-driven interactions and support for command-line inputs.

Features

• Create TCP/UDP ports on a server.
• Check connectivity with other servers via multiple ports.
• Supports both interactive menu-driven interactions and command-line inputs.
• Includes a help option to display usage information.
• Network hop checking to trace the route of failed connections.
• Automatic shutdown of created ports on exit.
• Duration option to keep the ports up for a specified time (default: 5 minutes).

Requirements

• For Bash version: Linux/Unix-based system.
• For Perl version: Perl interpreter.
• For Python version: Python 3.
• For PowerShell version: Windows OS (PowerShell is built into Windows and does not have any additional dependencies).

Usage

Bash Version

./netconnect.sh

Perl Version

perl netconnect.pl

Python Version

python3 netconnect.py

PowerShell Version

.\netconnect.ps1

Command-Line Options

Each version of the NetConnect tool supports command-line options to create ports and test connections separately. If no duration is provided, the default duration is 5 minutes (300 seconds).

Bash

To create ports on the local computer

./netconnect.sh -c <PORT_1> <PORT_2> ...

To test connections with multiple servers or a range of IP addresses and ports from the local computer

./netconnect.sh -t <REMOTE_SERVER1-REMOTE_SERVER2> -p <PORT_1> <PORT_2> ...

Perl

To create ports on the local computer

perl netconnect.pl -c <PORT_1> <PORT_2> ...

To test connections with multiple servers or a range of IP addresses and ports from the local computer

perl netconnect.pl -t <REMOTE_SERVER1-REMOTE_SERVER2> -p <PORT_1> <PORT_2> ...

Python

To create ports on the local computer

python3 netconnect.py -c <PORT_1> <PORT_2> ...

To test connections with multiple servers or a range of IP addresses and ports from the local computer

python3 netconnect.py -t <REMOTE_SERVER1-REMOTE_SERVER2> -p <PORT_1> <PORT_2> ...

PowerShell

To create ports on the local computer

.\netconnect.ps1 -c <PORT_1> <PORT_2> ...

To test connections with multiple servers or a range of IP addresses and ports from the local computer

.\netconnect.ps1 -t <REMOTE_SERVER1-REMOTE_SERVER2> -p <PORT_1>,<PORT_2>,...

Examples

1. Create ports 8080 and 9000 on the local computer using PowerShell:

.\netconnect.ps1 -c 8080 9000

2. Test connectivity to ports 22, 80, and 443 on multiple servers (192.168.1.100, 203.0.113.10) using Bash:

./netconnect.sh -t 192.168.1.100-203.0.113.10 -p 22 80 443

3. Test connectivity to ports 80 and 443 on a range of IP addresses (192.168.1.100-192.168.1.110) using Python:

python3 netconnect.py -t 192.168.1.100-192.168.1.110 -p 80 443

Help Option

To display usage information and help, use the -h or --help option with any version of the script:

./netconnect.sh -h

perl netconnect.pl -h

python3 netconnect.py -h

.\netconnect.ps1 -h

License

This project is licensed under the MIT License - see the LICENSE file for details.