smb-scan-using-arp.ps1

# Run arp -a and extract IP addresses
$ips = arp -a | ForEach-Object {
    if ($_ -match '(\d+\.\d+\.\d+\.\d+)') {
        $matches[1]
    }
} | Where-Object { $_ -ne "0.0.0.0" -and $_ -ne "255.255.255.255" }

# Function to check SMB connectivity
function Check-SMB {
    param (
        [string]$ip
    )
    $tcp = New-Object System.Net.Sockets.TcpClient
    if ($tcp.ConnectAsync($ip, 445).Wait(100)) {
        Write-Output "SMB is OPEN on $ip"
    } else {
        Write-Output "SMB is CLOSED on $ip"
    }
    $tcp.Close()
}

# Check SMB on each discovered IP
foreach ($ip in $ips) {
    Check-SMB -ip $ip
}