# TCP Ping Network Monitor

A PowerShell-based monitoring tool that checks port 80 connectivity for specified IP addresses while simultaneously monitoring network traffic. This tool provides real-time visibility into both web service availability and network bandwidth usage.

## Features

- **Port 80 Connectivity Monitoring**: Tests TCP connections to port 80 on specified IP addresses
- **Parallel Processing**: Uses PowerShell runspaces for efficient concurrent monitoring
- **Network Traffic Analysis**: Monitors upload/download speeds on a specified network interface
- **High Traffic Detection**: Alerts when network traffic exceeds defined thresholds
- **Performance Metrics**: Tracks min/max/mean response times and success rates
- **Traffic Correlation**: Links connection failures with high traffic events

## Getting Started

### Prerequisites

- Windows with PowerShell 3.0 or later
- Administrative privileges (recommended for WMI access to network interface data)
- Network interface named "Intel[R] I210 Gigabit Network Connection _2" (or modify the script to match your interface)

### Installation

1. Download the `Port80Monitor.ps1` script
2. No additional installation required

### Usage

Run the script in PowerShell with administrator privileges:

```powershell
.\TCP_Ping_Monitor.ps1
```

The script will continuously monitor the specified IP addresses and network traffic until manually stopped by pressing `Ctrl+C`.

## Configuration

### IP Addresses

Modify the `$addresses` array at the top of the script to monitor your desired IP addresses:

```powershell
$addresses = @(
    "1.1.1.1",
    "1.0.0.1"
    # Add more IP addresses as needed
)
```

### Network Interface

The script is configured to monitor a specific network interface. Modify the `Get-NetworkTraffic` function to match your system's network interface name:

```powershell
$stats = Get-WmiObject Win32_PerfFormattedData_Tcpip_NetworkInterface | 
         Where-Object {$_.Name -eq "Intel[R] I210 Gigabit Network Connection _2"}
```

To find your network interface names, run:

```powershell
Get-WmiObject Win32_PerfFormattedData_Tcpip_NetworkInterface | Select-Object Name
```

### Traffic Thresholds

The high traffic threshold is set to 80 Mbps for both upload and download. Modify these values as needed:

```powershell
$isHighTrafficNow = ($uploadMbps -gt 80) -or ($downloadMbps -gt 80)
```

And:

```powershell
if ($uploadMbps -gt 80) {
    $trafficStats.HighUploadInstances++
    $uploadAlert = "HIGH UPLOAD ALERT: $([math]::Round($uploadMbps, 2)) Mbps"
}
```

## Console Display

The console display shows:

### Network Traffic Section
- Current download and upload speeds in Mbps
- Count of high traffic instances detected
- Alerts when traffic exceeds thresholds (displayed in red)

### Port 80 Connectivity Section
- **IP Address**: The address being monitored
- **Status**: UP (green) or DOWN (red)
- **Min**: Minimum response time in milliseconds
- **Max**: Maximum response time in milliseconds
- **Mean**: Average response time in milliseconds
- **Success%**: Percentage of successful connections
- **Fails**: Total count of failed connections
- **HTFails**: Count of failures during high traffic periods

## Log Files

The script creates a log file named `network_traffic.log` in the current directory with CSV-formatted data containing:
- Timestamp
- Bytes received per second
- Bytes sent per second
- High download alert flag (true/false)
- High upload alert flag (true/false)

This log can be used for later analysis and correlation between network traffic and service availability.

## Performance Considerations

- The script uses a runspace pool with a maximum of 20 concurrent runspaces, which balances efficiency with system resource usage
- Monitoring frequency is set to approximately 500ms (adjustable via the `Start-Sleep` parameter)
- The script maintains a rolling 60-sample window for calculating statistics

## Advanced Usage

### Monitoring Web Services

This tool is particularly useful for monitoring web services that:
- Run on port 80 (HTTP)
- May be affected by network congestion
- Require continuous availability monitoring

### Network Troubleshooting

Use this tool to:
- Identify correlation between network congestion and service failures
- Detect patterns in high traffic occurrences
- Monitor the impact of network changes on service availability

### Integration with Other Tools

The CSV log file can be:
- Imported into Excel or PowerBI for visualization
- Processed by other monitoring tools
- Used to generate reports on service levels and network performance

## Troubleshooting

Common issues:

1. **WMI Access Errors**: Ensure you're running PowerShell as Administrator
2. **Network Interface Not Found**: Verify the interface name in the `Get-NetworkTraffic` function
3. **Inaccurate Traffic Data**: Some virtualized environments may not report network statistics accurately

## Customization

### Adding Additional Metrics

You can extend the script to monitor additional metrics by:
- Adding new fields to the `$stats` hashtable
- Implementing additional WMI queries in the `Get-NetworkTraffic` function
- Expanding the display to show the new metrics

### Monitoring Different Ports

To monitor a different port (e.g., port 443 for HTTPS):
- Modify the port number in the `$TestPort80ScriptBlock` scriptblock:
```powershell
$result = $tcpClient.BeginConnect($ComputerName, 443, $null, $null)
```

## License

This script is provided as-is with no warranty. Use at your own risk.

## Acknowledgments

- PowerShell runspace pattern for efficient parallel execution
- Windows WMI for providing network performance data