Network Testing Script

This PowerShell script is designed to perform parallel network tests based on a CSV configuration file. It allows network administrators to check the availability of TCP ports, perform ping tests, and resolve DNS names against specified servers. The results are color-coded for quick identification of successes and failures.

Features

• TCP Port Testing: Checks if a TCP port is open on a specified target with a custom timeout.
• Ping Testing: Verifies if a target is reachable via ping.
• DNS Resolution Testing: Tests if a DNS server can resolve a specified hostname and displays the resolved IP address.
• Parallel Execution: Tests are run in parallel to optimize performance and reduce execution time.
• CSV Configuration: Tests are configured through a CSV file, making it easy to adjust and extend the test cases.

Usage

Script Parameters

• -CsvFilePath: Path to the CSV file containing the test configuration.

CSV File Format

The CSV file should have the following columns:

• Name: A descriptive name for the test.
• Target: The target IP address or DNS server.
• TestType: The type of test to perform (TCP, Ping, or DNS).
• ExpectedResult: Expected result of the test (1 for success, 0 for failure).

Example CSV file:

Name,Target,TestType,ExpectedResult
Cloudflare,1.1.1.1,Ping,1
Cloudflare,1.1.1.1,DNS,1
Google,1.1.1.1,Ping,1
Google,1.1.1.1,DNS,1
Google Website,google.com,443,1
YouTube Website,youtube.com,443,1

Running the Script

Run the script in PowerShell by providing the path to the CSV file:

.\PortCheck.ps1 -CsvFilePath .\example.csv

Output

The script provides color-coded output indicating the success or failure of each test:

• Green: Test successful
• Red: Test failed
• Yellow: Unknown test type

Example output:

.\PortCheck.ps1 -CsvFilePath example.csv

Test successful: Cloudflare (1.1.1.1) is reachable with ping
Test successful: google.com resolved by DNS server 1.1.1.1 with IP 2a00:1450:401b:808::200e 142.251.143.78
Test successful: Google (1.1.1.1) is reachable with ping
Test successful: google.com resolved by DNS server 1.1.1.1 with IP 2a00:1450:401b:808::200e 216.58.208.206
Test successful: Google Website (google.com) on Port 443 is reachable
Test successful: YouTube Website (youtube.com) on Port 443 is reachable

Contributing

If you have suggestions or improvements, feel free to submit a pull request or open an issue.