Checks/Aws/Test-Ec2InstancePortKerberosExposedToInternet.ps1

function Test-Ec2InstancePortKerberosExposedToInternet {
    <#
    .SYNOPSIS
        EC2 instance does not allow ingress from the Internet to TCP ports 88, 464, 749, or 750 (Kerberos)

    .DESCRIPTION
        **EC2 instances** whose security groups allow public **inbound TCP** access to Kerberos ports `88`, `464`, `749`, or `750` (authentication, password change, admin).
        
        Rules permitting `0.0.0.0/0` or `::/0` are treated as Internet-exposed.

    .PARAMETER Check
        CIEMCheck object containing check metadata.
    #>

    [CmdletBinding()]
    [OutputType([PSCustomObject[]])]
    param(
        [Parameter(Mandatory)]
        [CIEMCheck]$Check
    )

    $ErrorActionPreference = 'Stop'

    # TODO: Implement check logic based on Prowler check: ec2_instance_port_kerberos_exposed_to_internet

    [CIEMScanResult]::Create($Check, 'MANUAL', 'This check requires manual implementation. See Prowler check ec2_instance_port_kerberos_exposed_to_internet for reference.', 'N/A', 'ec2 Resources')
}