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Viewing: scan_network.ps1

$ErrorActionPreference = 'SilentlyContinue'
$ProgressPreference = 'SilentlyContinue'

# Get the primary network interface (the one with a real default gateway)
# Works for Ethernet, Wi-Fi, WLAN, and any adapter name/language.
$gwConfig = Get-NetIPConfiguration | Where-Object {
    $_.IPv4DefaultGateway -and $_.IPv4DefaultGateway.NextHop -ne '0.0.0.0'
} | Select-Object -First 1

$cidrStr = ''
$gwIp = ''
$primaryIfIdx = $null

if ($gwConfig) {
    $gwIp = $gwConfig.IPv4DefaultGateway.NextHop
    $primaryIfIdx = $gwConfig.InterfaceIndex

    $addr = Get-NetIPAddress -InterfaceIndex $primaryIfIdx -AddressFamily IPv4 -ErrorAction SilentlyContinue |
        Where-Object { $_.IPAddress -notlike '169.254.*' -and $_.IPAddress -ne '127.0.0.1' } |
        Select-Object -First 1
    if ($addr) {
        $cidrStr = $addr.IPAddress + '/' + $addr.PrefixLength
    }
}

# Get neighbors (merge global + interface-specific for WiFi compatibility)
$neighbors = Get-NetNeighbor -AddressFamily IPv4 | Where-Object {
    $_.LinkLayerAddress -ne '00-00-00-00-00-00' -and
    $_.LinkLayerAddress -ne '' -and
    $_.LinkLayerAddress -ne 'FF-FF-FF-FF-FF-FF' -and
    $_.IPAddress -notlike '169.254.*' -and
    $_.IPAddress -ne '127.0.0.1' -and
    $_.IPAddress -notlike '224.*' -and
    $_.IPAddress -notlike '239.*' -and
    $_.IPAddress -ne '255.255.255.255' -and
    $_.IPAddress -notlike '*.255' -and
    ($_.State -eq 'Reachable' -or $_.State -eq 'Stale' -or $_.State -eq 'Permanent' -or $_.State -eq 'Delay' -or $_.State -eq 'Probe')
}

if ($primaryIfIdx) {
    $ifNeighbors = Get-NetNeighbor -InterfaceIndex $primaryIfIdx -AddressFamily IPv4 -ErrorAction SilentlyContinue | Where-Object {
        $_.LinkLayerAddress -ne '00-00-00-00-00-00' -and
        $_.LinkLayerAddress -ne '' -and
        $_.LinkLayerAddress -ne 'FF-FF-FF-FF-FF-FF' -and
        $_.IPAddress -notlike '169.254.*' -and
        $_.IPAddress -ne '127.0.0.1' -and
        $_.IPAddress -notlike '224.*' -and
        $_.IPAddress -notlike '239.*' -and
        $_.IPAddress -ne '255.255.255.255' -and
        $_.IPAddress -notlike '*.255' -and
        ($_.State -eq 'Reachable' -or $_.State -eq 'Stale' -or $_.State -eq 'Permanent' -or $_.State -eq 'Delay' -or $_.State -eq 'Probe')
    }
    if ($ifNeighbors) {
        $seenIPs = @{}
        $merged = @()
        foreach ($n in $neighbors) {
            if (-not $seenIPs.ContainsKey($n.IPAddress)) {
                $merged += $n
                $seenIPs[$n.IPAddress] = $true
            }
        }
        foreach ($n in $ifNeighbors) {
            if (-not $seenIPs.ContainsKey($n.IPAddress)) {
                $merged += $n
                $seenIPs[$n.IPAddress] = $true
            }
        }
        $neighbors = $merged
    }
}

# Build device list
$devs = @()
foreach ($n in $neighbors) {
    $devs += @{ IP = $n.IPAddress; MAC = $n.LinkLayerAddress }
}

# Get adapter info for the primary interface
$adapterInfo = $null
if ($primaryIfIdx) {
    $adapter = Get-NetAdapter -InterfaceIndex $primaryIfIdx -ErrorAction SilentlyContinue
} else {
    $adapter = Get-NetAdapter | Where-Object Status -eq Up | Sort-Object LinkSpeed -Descending | Select-Object -First 1
}
if ($adapter) {
    $mediaType = 'Ethernet'
    if ($adapter.Name -match 'Wi-Fi|WiFi|WLAN|Wireless' -or $adapter.InterfaceDescription -match 'Wi-Fi|WiFi|Wireless|802\.11') {
        $mediaType = 'Wi-Fi'
    }
    $adapterInfo = @{
        Name      = $adapter.Name
        Desc      = $adapter.InterfaceDescription
        Mac       = $adapter.MacAddress
        Speed     = $adapter.LinkSpeed
        MediaType = $mediaType
        IfIndex   = $adapter.InterfaceIndex
    }
}

# Get TCP connections (with timeout protection)
$tcpList = @()
try {
    $tcpList = Get-NetTCPConnection -State Established -ErrorAction SilentlyContinue |
        Group-Object RemoteAddress |
        Select-Object Count, Name
} catch {}

@{
    devices = $devs
    cidr    = $cidrStr
    gateway = $gwIp
    adapter = $adapterInfo
    tcp     = $tcpList
} | ConvertTo-Json -Depth 3 -Compress
User / IP	: 216.73.216.217
Host / Server	: 45.84.207.204 / aircan.me
System	: Linux lt-bnk-web1726.main-hosting.eu 5.14.0-611.36.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Mar 3 11:23:52 EST 2026 x86_64