Function Set-AppPool
{
Param ($Description, $AppPool)
 
	Set-ItemProperty IIS:\Sites\$Description -Name ApplicationPool -Value "$AppPool"
}

Function Create-AppPool
{
Param ($AppPool, $Username, $Password)
 
    New-Item IIS:\AppPools\$AppPool
    $NewPool = Get-Item IIS:\AppPools\$AppPool
    $NewPool.ProcessModel.Username = "$Username"
    $NewPool.ProcessModel.Password = "$Password"
    $NewPool.ProcessModel.IdentityType = 3
    $NewPool | Set-Item
}

Function Modify-DefaultDoc
{
Param ($Description, $DefaultDocName, $Action)
 
    If ($Action -eq "Add")
    {
        Add-WebConfiguration //DefaultDocument/Files -AtIndex 0 -Value @{Value="$DefaultDocName"} -PSPath IIS:\ -Location $Description 
    }
 
    If ($Action -eq "Remove")
    {
        Clear-WebConfiguration //DefaultDocument/Files -PSPath IIS:\ -Location $Description
    }
}

Function Modify-FTPQuota
{
Param ($LogDir, $FTPQuota)
 
    DirQuota Quota Modify /Path:"$LogDir" /Limit:$FTPQuota
}

Function Create-FTPSite
{
Param ($FTPUsername, $LogDir, $FTPQuota, $FTPUserDir)
 
        $FTPUserPath = ($FTPUsername.Split("\")[1])
        New-Item IIS:\Sites\".Default FTP Site"\$FTPUserDir\$FTPUserPath -Type VirtualDirectory -PhysicalPath "$LogDir"
        Add-WebConfiguration -Filter /System.FtpServer/Security/Authorization -Value (@{AccessType="Allow"; Users="$FTPUserPath"; Permissions="Read, Write"}) -PSPath IIS: -Location ".Default FTP Site/$FTPUserDir/$FTPUserPath"
        Clear-WebConfiguration -Filter /System.FtpServer/Security/Authorization -PSPath IIS: -Location ".Default FTP Site/$FTPUserDir"
        DirQuota Quota Add /Path:"$LogDir" /Limit:$FTPQuota
}

Function Create-WebSite
{
Param ($LogDir, $Description, $Domain)
 
     $Domain = ($Domain.TrimStart("www")).TrimStart(".")
     New-Item IIS:\Sites\$Description -Bindings (@{Protocol="http";BindingInformation="*:80:$Domain"},@{Protocol="http";BindingInformation="*:80:www.$Domain"}) -PhysicalPath "$LogDir\http"
}

Function Set-FTPACL
{
Param ($FTPUsername, $LogDir)
 
    $Account = New-Object System.Security.Principal.Ntaccount("$FTPUsername")
    $Sid = $Account.Translate([System.Security.Principal.SecurityIdentifier])
    $ACL = Get-Acl -Path "$LogDir"
    $Permission = "$Account","Modify","ContainerInherit,ObjectInherit","None","Allow"
    $AccessRule = New-Object System.Security.AccessControl.FileSystemAccessRule $Permission
    $ACL.SetAccessRule($AccessRule)
    $ACL | Set-Acl "$LogDir"
}