Azure allow IPs from a list file

Azure-allow-IPs-from-a-list-file.ps1

# Resource group and NSG name
$resourceGroupName = 'RESOURCE_GROUP_NAME'
$nsgName = 'NETWORK_SECURITY_GROUP_NAME'

# Path to the file containing IP ranges
$ipRangesFile = 'IP_RANGE_FILE_PATH'


# Read IP ranges from file
$ipRanges = Get-Content $ipRangesFile

# Get the NSG object
$nsg = Get-AzNetworkSecurityGroup -ResourceGroupName $resourceGroupName -Name $nsgName

# Create NSG rules for each IP range
$priority = 100
foreach ($ipRange in $ipRanges) {
    $ruleName = "AllowFrom-$priority"
    $ruleParams = @{
        'Name' = $ruleName
        'Protocol' = 'Tcp'
        'SourceAddressPrefix' = $ipRange
        'SourcePortRange' = '*' # Allow traffic from any source port
        'DestinationAddressPrefix' = '*' # Allow traffic to any destination
        'DestinationPortRange' = @('80', '443') # Allow traffic to destination ports 80 and 443
        'Access' = 'Allow'
        'Direction' = 'Inbound'
        'Priority' = $priority
        'Description' = "Allow inbound TCP traffic from IP $ipRange on ports 80 and 443"
    }
    $rule = New-AzNetworkSecurityRuleConfig @ruleParams
    $nsg.SecurityRules.Add($rule)
    Set-AzNetworkSecurityGroup -NetworkSecurityGroup $nsg
    Write-Output "Created NSG rule: $ruleName"
    $priority++
}

Write-Output 'NSG rules creation completed.'