Migrace konfigurací Azure Firewall do zásad Azure Firewall pomocí PowerShellu
K migraci existujících konfigurací Azure Firewall do prostředku zásad Azure Firewall můžete použít Azure PowerShell skript. Pak můžete zásadu nasadit pomocí Azure Firewall Manageru.
Skript AZFWMigrationScript.ps1 vytvoří FirewallPolicy se třemi objekty RuleCollectionGroup pro ApplicationRuleCollections, NetworkRuleCollections a NatRuleCollections v uvedeném pořadí.
RuleCollectionGroup je nové seskupení nejvyšší úrovně pro kolekce pravidel pro budoucí rozšiřitelnost. Použití výše uvedených výchozích nastavení se doporučuje a provádí se automaticky na portálu.
Začátek skriptu definuje název zdrojové brány firewall a skupinu prostředků a název a umístění cílové zásady. Změňte tyto hodnoty podle potřeby vaší organizace.
Skript migrace
Upravte následující skript pro migraci konfigurace brány firewall.
# Input params to be modified as needed
$FirewallResourceGroup = "AzFWMigrateRG"
$FirewallName = "azfw"
$FirewallPolicyResourceGroup = "AzFWPolicyRG"
$FirewallPolicyName = "fwpolicy"
$FirewallPolicyLocation = "WestEurope"
$DefaultAppRuleCollectionGroupName = "ApplicationRuleCollectionGroup"
$DefaultNetRuleCollectionGroupName = "NetworkRuleCollectionGroup"
$DefaultNatRuleCollectionGroupName = "NatRuleCollectionGroup"
$ApplicationRuleGroupPriority = 300
$NetworkRuleGroupPriority = 200
$NatRuleGroupPriority = 100
$InvalidCharsPattern = "[']"
# Helper functions for translating ApplicationProtocol and ApplicationRule
Function GetApplicationProtocolsString
{
Param([Object[]] $Protocols)
$output = ""
ForEach ($protocol in $Protocols)
{
$output += $protocol.ProtocolType + ":" + $protocol.Port + ","
}
return $output.Substring(0, $output.Length - 1)
}
Function GetApplicationRuleCmd
{
Param([Object] $ApplicationRule)
$cmd = "New-AzFirewallPolicyApplicationRule"
$parsedName = ParseRuleName($ApplicationRule.Name)
$cmd = $cmd + " -Name " + "'" + $parsedName + "'"
if ($ApplicationRule.SourceAddresses)
{
$ApplicationRule.SourceAddresses = $ApplicationRule.SourceAddresses -join ","
$cmd = $cmd + " -SourceAddress " + $ApplicationRule.SourceAddresses
}
elseif ($ApplicationRule.SourceIpGroups)
{
$ApplicationRule.SourceIpGroups = $ApplicationRule.SourceIpGroups -join ","
$cmd = $cmd + " -SourceIpGroup " + $ApplicationRule.SourceIpGroups
}
if ($ApplicationRule.Description)
{
$cmd = $cmd + " -Description " + "'" + $ApplicationRule.Description + "'"
}
if ($ApplicationRule.TargetFqdns)
{
$protocols = GetApplicationProtocolsString($ApplicationRule.Protocols)
$cmd = $cmd + " -Protocol " + $protocols
$AppRule = $($ApplicationRule.TargetFqdns) -join ","
$cmd = $cmd + " -TargetFqdn " + $AppRule
}
if ($ApplicationRule.FqdnTags)
{
$cmd = $cmd + " -FqdnTag " + "'" + $ApplicationRule.FqdnTags + "'"
}
return $cmd
}
Function ParseRuleName
{
Param([Object] $RuleName)
if ($RuleName -match $InvalidCharsPattern) {
$newRuleName = $RuleName -split $InvalidCharsPattern -join ""
Write-Host "Rule $RuleName contains an invalid character. Invalid characters have been removed, rule new name is $newRuleName. " -ForegroundColor Yellow
return $newRuleName
}
return $RuleName
}
If (!(Get-AzResourceGroup -Name $FirewallPolicyResourceGroup))
{
New-AzResourceGroup -Name $FirewallPolicyResourceGroup -Location $FirewallPolicyLocation
}
$azfw = Get-AzFirewall -Name $FirewallName -ResourceGroupName $FirewallResourceGroup
Write-Host "creating empty firewall policy"
if ($azfw.DNSEnableProxy) {
$fwDnsSetting = New-AzFirewallPolicyDnsSetting -EnableProxy
$fwp = New-AzFirewallPolicy -Name $FirewallPolicyName -ResourceGroupName $FirewallPolicyResourceGroup -Location $FirewallPolicyLocation -ThreatIntelMode $azfw.ThreatIntelMode -DnsSetting $fwDnsSetting -Force
}
else {
$fwp = New-AzFirewallPolicy -Name $FirewallPolicyName -ResourceGroupName $FirewallPolicyResourceGroup -Location $FirewallPolicyLocation -ThreatIntelMode $azfw.ThreatIntelMode
}
Write-Host $fwp.Name "created"
# Translate ApplicationRuleCollection
Write-Host "creating " $azfw.ApplicationRuleCollections.Count " application rule collections"
If ($azfw.ApplicationRuleCollections.Count -gt 0)
{
$firewallPolicyAppRuleCollections = @()
ForEach ($appRc in $azfw.ApplicationRuleCollections)
{
If ($appRc.Rules.Count -gt 0)
{
Write-Host "creating " $appRc.Rules.Count " application rules for collection " $appRc.Name
$firewallPolicyAppRules = @()
ForEach ($appRule in $appRc.Rules)
{
$cmd = GetApplicationRuleCmd($appRule)
$firewallPolicyAppRule = Invoke-Expression $cmd
Write-Host "Created Application Rule: " $firewallPolicyAppRule.Name
$firewallPolicyAppRules += $firewallPolicyAppRule
}
$fwpAppRuleCollection = New-AzFirewallPolicyFilterRuleCollection -Name $appRC.Name -Priority $appRC.Priority -ActionType $appRC.Action.Type -Rule $firewallPolicyAppRules
Write-Host "Created Application Rule Collection: " $fwpAppRuleCollection.Name
}
$firewallPolicyAppRuleCollections += $fwpAppRuleCollection
}
$appRuleGroup = New-AzFirewallPolicyRuleCollectionGroup -Name $DefaultAppRuleCollectionGroupName -Priority $ApplicationRuleGroupPriority -RuleCollection $firewallPolicyAppRuleCollections -FirewallPolicyObject $fwp
Write-Host "Created Application Rule Collection Group: " $appRuleGroup.Name
}
# Translate NetworkRuleCollection
Write-Host "creating " $azfw.NetworkRuleCollections.Count " network rule collections"
If ($azfw.NetworkRuleCollections.Count -gt 0)
{
$firewallPolicyNetRuleCollections = @()
ForEach ($rc in $azfw.NetworkRuleCollections)
{
If ($rc.Rules.Count -gt 0)
{
Write-Host "creating " $rc.Rules.Count " network rules for collection " $rc.Name
$firewallPolicyNetRules = @()
ForEach ($rule in $rc.Rules)
{
$parsedName = ParseRuleName($rule.Name)
If ($rule.SourceAddresses)
{
If ($rule.DestinationAddresses)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceAddress $rule.SourceAddresses -DestinationAddress $rule.DestinationAddresses -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
elseif ($rule.DestinationIpGroups)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceAddress $rule.SourceAddresses -DestinationIpGroup $rule.DestinationIpGroups -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
elseif ($rule.DestinationFqdns)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceAddress $rule.SourceAddresses -DestinationFqdn $rule.DestinationFqdns -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
}
elseif ($rule.SourceIpGroups)
{
If ($rule.DestinationAddresses)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceIpGroup $rule.SourceIpGroups -DestinationAddress $rule.DestinationAddresses -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
elseif ($rule.DestinationIpGroups)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceIpGroup $rule.SourceIpGroups -DestinationIpGroup $rule.DestinationIpGroups -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
elseif ($rule.DestinationFqdns)
{
$firewallPolicyNetRule = New-AzFirewallPolicyNetworkRule -Name $parsedName -SourceIpGroup $rule.SourceIpGroups -DestinationFqdn $rule.DestinationFqdns -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
}
Write-Host "Created network rule: " $firewallPolicyNetRule.Name
$firewallPolicyNetRules += $firewallPolicyNetRule
}
$fwpNetRuleCollection = New-AzFirewallPolicyFilterRuleCollection -Name $rc.Name -Priority $rc.Priority -ActionType $rc.Action.Type -Rule $firewallPolicyNetRules
Write-Host "Created Network Rule Collection: " $fwpNetRuleCollection.Name
}
$firewallPolicyNetRuleCollections += $fwpNetRuleCollection
}
$netRuleGroup = New-AzFirewallPolicyRuleCollectionGroup -Name $DefaultNetRuleCollectionGroupName -Priority $NetworkRuleGroupPriority -RuleCollection $firewallPolicyNetRuleCollections -FirewallPolicyObject $fwp
Write-Host "Created Network Rule Collection Group: " $netRuleGroup.Name
}
# Translate NatRuleCollection
# Hierarchy for NAT rule collection is different for AZFW and FirewallPolicy. In AZFW you can have a NatRuleCollection with multiple NatRules
# where each NatRule will have its own set of source , dest, translated IPs and ports.
# In FirewallPolicy a NatRuleCollection has a set of rules which has one condition (source and dest IPs and Ports) and the translated IP and ports
# as part of NatRuleCollection.
# So when translating NAT rules we will have to create separate ruleCollection for each rule in AZFW and every ruleCollection will have only 1 rule.
Write-Host "creating " $azfw.NatRuleCollections.Count " NAT rule collections"
If ($azfw.NatRuleCollections.Count -gt 0)
{
$firewallPolicyNatRuleCollections = @()
$priority = 100
ForEach ($rc in $azfw.NatRuleCollections)
{
$firewallPolicyNatRules = @()
If ($rc.Rules.Count -gt 0)
{
Write-Host "creating " $rc.Rules.Count " nat rules for collection " $rc.Name
ForEach ($rule in $rc.Rules)
{
$parsedName = ParseRuleName($rule.Name)
If ($rule.SourceAddresses)
{
$firewallPolicyNatRule = New-AzFirewallPolicyNatRule -Name $parsedName -SourceIpGroup $rule.SourceAddresses -TranslatedAddress $rule.TranslatedAddress -TranslatedPort $rule.TranslatedPort -DestinationAddress $rule.DestinationAddresses -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
elseif ($rule.SourceIpGroups)
{
$firewallPolicyNatRule = New-AzFirewallPolicyNatRule -Name $parsedName -SourceIpGroup $rule.SourceIpGroups -TranslatedAddress $rule.TranslatedAddress -TranslatedPort $rule.TranslatedPort -DestinationAddress $rule.DestinationAddresses -DestinationPort $rule.DestinationPorts -Protocol $rule.Protocols
}
Write-Host "Created NAT rule: " $firewallPolicyNatRule.Name
$firewallPolicyNatRules += $firewallPolicyNatRule
}
$natRuleCollectionName = $rc.Name
$fwpNatRuleCollection = New-AzFirewallPolicyNatRuleCollection -Name $natRuleCollectionName -Priority $priority -ActionType $rc.Action.Type -Rule $firewallPolicyNatRules
$priority += 1
Write-Host "Created NAT Rule Collection: " $fwpNatRuleCollection.Name
$firewallPolicyNatRuleCollections += $fwpNatRuleCollection
}
}
$natRuleCollectionGroup = New-AzFirewallPolicyRuleCollectionGroup -Name $DefaultNatRuleCollectionGroupName -Priority $NatRuleGroupPriority -RuleCollection $firewallPolicyNatRuleCollections -FirewallPolicyObject $fwp
Write-Host "Created NAT Rule Collection Group: " $natRuleCollectionGroup.Name
}
Další kroky
Další informace o nasazení Azure Firewall Manageru: Přehled nasazení Azure Firewall Manageru.