<#
.SYNOPSIS
IP Configuration Toolkit

.DESCRIPTION
This script provides comprehensive analysis and management options for IP configurations on Windows systems.

.NOTES
File Name      : IPConfigToolkit.ps1
Author         : [Your Name]
Prerequisite   : PowerShell V5.1 or later, and appropriate admin rights
Version        : 1.0
Date           : [Current Date]

.EXAMPLE
.\IPConfigToolkit.ps1
#>

# Global variables
$global:reportPath = "$env:USERPROFILE\Desktop\IP_Config_Analysis_Report_$(Get-Date -Format 'yyyyMMdd_HHmmss').html"
$global:targetComputer = $env:COMPUTERNAME  # Default to local machine

function Show-Menu {
    Clear-Host
    Write-Host "=== IP Configuration Toolkit ===" -ForegroundColor Cyan
    Write-Host "Current Target Computer: $global:targetComputer"
    Write-Host "1. Set Target Computer"
    Write-Host "2. Get IP Configuration"
    Write-Host "3. Analyze Network Adapters"
    Write-Host "4. Check DNS Settings"
    Write-Host "5. Perform Network Connectivity Tests"
    Write-Host "6. View Routing Table"
    Write-Host "7. Check Network Shares"
    Write-Host "8. Analyze Open Ports"
    Write-Host "9. View Network Statistics"
    Write-Host "10. Generate Comprehensive HTML Report"
    Write-Host "11. Exit"
}

function Set-TargetComputer {
    $computer = Read-Host "Enter the target computer name (or press Enter for localhost)"
    if ([string]::IsNullOrWhiteSpace($computer)) {
        $global:targetComputer = $env:COMPUTERNAME
    } else {
        $global:targetComputer = $computer
    }
    Write-Host "Target computer set to: $global:targetComputer" -ForegroundColor Green
}

function Get-IPConfiguration {
    Write-Host "`nGathering IP Configuration..." -ForegroundColor Yellow
    try {
        $ipConfig = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-NetIPConfiguration | Select-Object InterfaceAlias, IPv4Address, IPv6Address, DNSServer
        }
        $ipConfig | Format-Table -AutoSize
        return $ipConfig
    }
    catch {
        Write-Host "Error getting IP configuration: $_" -ForegroundColor Red
        return $null
    }
}

function Analyze-NetworkAdapters {
    Write-Host "`nAnalyzing Network Adapters..." -ForegroundColor Yellow
    try {
        $adapters = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-NetAdapter | Select-Object Name, InterfaceDescription, Status, LinkSpeed, MacAddress
        }
        $adapters | Format-Table -AutoSize
        return $adapters
    }
    catch {
        Write-Host "Error analyzing network adapters: $_" -ForegroundColor Red
        return $null
    }
}

function Check-DNSSettings {
    Write-Host "`nChecking DNS Settings..." -ForegroundColor Yellow
    try {
        $dnsSettings = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-DnsClientServerAddress | Select-Object InterfaceAlias, ServerAddresses
        }
        $dnsSettings | Format-Table -AutoSize
        return $dnsSettings
    }
    catch {
        Write-Host "Error checking DNS settings: $_" -ForegroundColor Red
        return $null
    }
}

function Perform-NetworkConnectivityTests {
    Write-Host "`nPerforming Network Connectivity Tests..." -ForegroundColor Yellow
    try {
        $results = @()
        $testTargets = @("8.8.8.8", "www.google.com", $global:targetComputer)
        foreach ($target in $testTargets) {
            $pingResult = Test-Connection -ComputerName $target -Count 4 -ErrorAction SilentlyContinue
            $results += [PSCustomObject]@{
                Target = $target
                Successful = if ($pingResult) { $true } else { $false }
                AverageResponseTime = if ($pingResult) { ($pingResult | Measure-Object -Property ResponseTime -Average).Average } else { "N/A" }
            }
        }
        $results | Format-Table -AutoSize
        return $results
    }
    catch {
        Write-Host "Error performing network connectivity tests: $_" -ForegroundColor Red
        return $null
    }
}

function View-RoutingTable {
    Write-Host "`nViewing Routing Table..." -ForegroundColor Yellow
    try {
        $routes = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-NetRoute | Select-Object DestinationPrefix, NextHop, RouteMetric, InterfaceAlias
        }
        $routes | Format-Table -AutoSize
        return $routes
    }
    catch {
        Write-Host "Error viewing routing table: $_" -ForegroundColor Red
        return $null
    }
}

function Check-NetworkShares {
    Write-Host "`nChecking Network Shares..." -ForegroundColor Yellow
    try {
        $shares = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-SmbShare | Select-Object Name, Path, Description
        }
        $shares | Format-Table -AutoSize
        return $shares
    }
    catch {
        Write-Host "Error checking network shares: $_" -ForegroundColor Red
        return $null
    }
}

function Analyze-OpenPorts {
    Write-Host "`nAnalyzing Open Ports..." -ForegroundColor Yellow
    try {
        $openPorts = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            Get-NetTCPConnection | Where-Object State -eq 'Listen' | Select-Object LocalAddress, LocalPort, State, OwningProcess
        }
        $openPorts | Format-Table -AutoSize
        return $openPorts
    }
    catch {
        Write-Host "Error analyzing open ports: $_" -ForegroundColor Red
        return $null
    }
}

function View-NetworkStatistics {
    Write-Host "`nViewing Network Statistics..." -ForegroundColor Yellow
    try {
        $stats = Invoke-Command -ComputerName $global:targetComputer -ScriptBlock {
            $tcpStats = Get-NetTCPConnection | Group-Object State | Select-Object Name, Count
            $ipStats = Get-NetIPv4Protocol | Select-Object DefaultHopLimit, NeighborCacheLimit, RouteCacheLimit
            return @{
                TCPConnections = $tcpStats
                IPv4Stats = $ipStats
            }
        }
        $stats.TCPConnections | Format-Table -AutoSize
        $stats.IPv4Stats | Format-List
        return $stats
    }
    catch {
        Write-Host "Error viewing network statistics: $_" -ForegroundColor Red
        return $null
    }
}

function Generate-HTMLReport {
    param([hashtable]$AllResults)

    Write-Host "`nGenerating Comprehensive HTML Report..." -ForegroundColor Yellow
    $reportContent = @"
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>IP Configuration Analysis Report</title>
    <style>
        body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #0078D4; }
        table { border-collapse: collapse; width: 100%; margin-bottom: 20px; }
        th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
        th { background-color: #f2f2f2; }
        .warning { color: orange; }
        .critical { color: red; }
    </style>
</head>
<body>
    <h1>IP Configuration Analysis Report</h1>
    <p>Generated on: $(Get-Date)</p>
    <p>Target Computer: $global:targetComputer</p>

    <h2>IP Configuration</h2>
    $($AllResults.IPConfig | ConvertTo-Html -Fragment)

    <h2>Network Adapters</h2>
    $($AllResults.NetworkAdapters | ConvertTo-Html -Fragment)

    <h2>DNS Settings</h2>
    $($AllResults.DNSSettings | ConvertTo-Html -Fragment)

    <h2>Network Connectivity Tests</h2>
    $($AllResults.ConnectivityTests | ConvertTo-Html -Fragment)

    <h2>Routing Table</h2>
    $($AllResults.RoutingTable | ConvertTo-Html -Fragment)

    <h2>Network Shares</h2>
    $($AllResults.NetworkShares | ConvertTo-Html -Fragment)

    <h2>Open Ports</h2>
    $($AllResults.OpenPorts | ConvertTo-Html -Fragment)

    <h2>Network Statistics</h2>
    <h3>TCP Connections</h3>
    $($AllResults.NetworkStats.TCPConnections | ConvertTo-Html -Fragment)
    <h3>IPv4 Statistics</h3>
    $($AllResults.NetworkStats.IPV4Stats | ConvertTo-Html -Fragment)
</body>
</html>
"@

    $reportContent | Out-File -FilePath $global:reportPath
    Write-Host "Report generated and saved to: $global:reportPath" -ForegroundColor Green
}

# Main program loop
$allResults = @{}

do {
    Show-Menu
    $choice = Read-Host "`nEnter your choice (1-11)"

    switch ($choice) {
        "1" { Set-TargetComputer }
        "2" { $allResults.IPConfig = Get-IPConfiguration }
        "3" { $allResults.NetworkAdapters = Analyze-NetworkAdapters }
        "4" { $allResults.DNSSettings = Check-DNSSettings }
        "5" { $allResults.ConnectivityTests = Perform-NetworkConnectivityTests }
        "6" { $allResults.RoutingTable = View-RoutingTable }
        "7" { $allResults.NetworkShares = Check-NetworkShares }
        "8" { $allResults.OpenPorts = Analyze-OpenPorts }
        "9" { $allResults.NetworkStats = View-NetworkStatistics }
        "10" { Generate-HTMLReport -AllResults $allResults }
        "11" { Write-Host "Exiting program..." -ForegroundColor Yellow; break }
        default { Write-Host "Invalid choice. Please try again." -ForegroundColor Red }
    }

    if ($choice -ne "11") {
        Read-Host "`nPress Enter to continue..."
    }
} while ($choice -ne "11")

This IP Configuration Toolkit includes:

1. A menu-driven interface for easy navigation.
2. Functions to analyze and manage various aspects of IP configurations:
   • IP Configuration retrieval
   • Network Adapter analysis
   • DNS Settings check
   • Network Connectivity Tests
   • Routing Table view
   • Network Shares check
   • Open Ports analysis
   • Network Statistics view
3. Option to set a target computer (local or remote)
4. HTML report generation for easy sharing and viewing of results

Key features:

• Comprehensive IP configuration information gathering
• Detailed analysis of network adapters
• DNS settings review
• Network connectivity tests to key targets
• Routing table examination
• Network shares enumeration
• Open ports analysis for security review
• Network statistics overview

This tool is particularly useful for:

• Network administrators troubleshooting IP configuration issues
• System administrators performing network health checks
• IT professionals analyzing network setups on remote systems
• Security analysts reviewing open ports and network configurations

To use this script effectively:

1. Run PowerShell as an administrator
2. Ensure you have the necessary permissions to query network information on the target computer
3. For remote computer analysis, make sure you have appropriate network access and permissions
4. Review the generated HTML report for a comprehensive overview of the IP configuration and network status

This script provides a thorough analysis of IP configurations and related network settings, helping to identify potential issues, misconfigurations, or areas that need attention. It’s designed to give administrators a quick but comprehensive view of a system’s network configuration and status.