Created
April 11, 2017 07:35
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Generates the RemoteRestrictions registry value to for setting HKLM\SOFTWARE\Microsoft\WebManagement\Server\RemoteRestrictions
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#generates the RemoteRestrictions registry value to for setting HKLM\SOFTWARE\Microsoft\WebManagement\Server\RemoteRestrictions | |
#to a set of allowed/dneied ip addresses. THe address specified with allow/deny based on the opposite of the globalDeny setting | |
# | |
#Examples: | |
#-Globally deny access and allow a specific ip through | |
# Generate-RemoteRestrictions -globalDeny $True -addresses "1.1.1.1/255.255.255.255" | |
# | |
#-Globally deny access and allow 2 ip and subnets | |
# Generate-RemoteRestrictions -globalDeny $True -addresses "1.1.1.0/255.255.255.0", "2.2.2.0/255.255.255.0" | |
# | |
#-Globally allow access and deny 2 ips and subnets | |
# Generate-RemoteRestrictions -globalDeny $False -addresses "1.1.1.0/255.255.255.0", "2.2.2.0/255.255.255.0" | |
function Generate-IpOrSubnetString { | |
Param ([string]$ip, [string]$ipTemplateString, [int] $ipOffset) | |
$ipTemplate = [System.Convert]::FromBase64String($ipTemplateString); | |
$ipParts = $ip.Split('.'); | |
$ipTemplate[$ipOffset] = [System.Convert]::ToByte($ipParts[0]); | |
$ipTemplate[$ipOffset + 2] = [System.Convert]::ToByte($ipParts[1]); | |
$ipTemplate[$ipOffset + 4] = [System.Convert]::ToByte($ipParts[2]); | |
$ipTemplate[$ipOffset + 6] = [System.Convert]::ToByte($ipParts[3]); | |
return [System.Convert]::ToBase64String($ipTemplate); | |
} | |
function Generate-AddressConfig { | |
Param ([int]$index, [string]$ip, [string]$subnet, [bool]$allow) | |
$ipTemplate = "AwEDAQMBAwEC"; | |
$ipConfig = Generate-IpOrSubnetString -ip $ip -ipTemplateString $ipTemplate -ipOffset 1; | |
$subnetTemplate = "LgQD/wP/A/8D/wMA"; | |
$subnetConfig = Generate-IpOrSubnetString -ip $subnet -ipTemplateString $subnetTemplate -ipOffset 3; | |
$addressConfig = [System.Convert]::FromBase64String("AQAAABkDAAAAAQAAAC4EAwEDAQMBAwECAAAALgQD/wP/A/8D/wMAAABn".Replace($ipTemplate, $ipConfig).Replace($subnetTemplate, $subnetConfig)); | |
[System.Buffer]::BlockCopy([System.BitConverter]::GetBytes($index), 0, $addressConfig, 0, 4); | |
$addressConfig[$addressConfig.Count - 1] = If($allow) { 104 } else { 103 }; | |
return [System.Convert]::ToBase64String($addressConfig); | |
} | |
function Generate-RemoteRestrictions { | |
Param ([bool]$globalDeny, [string[]] $addresses) | |
$header = [System.Convert]::FromBase64String("/wEZAgAAAAEAAABnAgAAABkAAAAA"); | |
$addressCountBytes = [System.BitConverter]::GetBytes($addresses.Count); | |
[System.Buffer]::BlockCopy($addressCountBytes, 0, $header, 17, 4); | |
$header[11] = If($globalDeny) { 104 } else { 103 }; | |
$remoteRestrictions = [System.Convert]::ToBase64String($header); | |
$index = 0; | |
foreach ($address in $addresses) { | |
$ip = $address.Split('/')[0]; | |
$subnet = $address.Split('/')[1]; | |
$remoteRestrictions += (Generate-AddressConfig -index $index -ip $ip -subnet $subnet -allow (-Not $globalDeny)); | |
$index++; | |
} | |
return $remoteRestrictions; | |
} |
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