Hubert Cornet
ebf9ba494c
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Terraform Apply / Terraform Apply (push) Failing after 13s
261 lines
15 KiB
HCL
261 lines
15 KiB
HCL
#==========================================================
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# Local Variables
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#==========================================================
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locals {
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precedence = {
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# NETWORK (L4) Policies - Access Infrastructure Integration
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access_infra_target = 4000 # Access Infrastructure integration (between DNS groups)
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# NETWORK (L4) Policies - Zero Trust RDP Access Control
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rdp_admin_allow = 21000 # Allow RDP for IT admins (identity-based)
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rdp_default_deny = 21700 # Default deny RDP (after allow, before lateral movement)
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# NETWORK (L4) Policies - Lateral Movement Prevention (East-West Traffic)
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block_lateral_ssh = 22550 # Block SSH lateral movement
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block_lateral_rdp = 22600 # Block RDP lateral movement
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block_lateral_smb = 22200 # Block SMB lateral movement
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block_lateral_winrm = 22300 # Block WinRM lateral movement
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block_lateral_database = 22400 # Block database lateral movement
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# NETWORK (L4) Policies - IP Access Control
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ip_access_block = 23000 # Block direct IP access to apps (force hostname-based access)
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# HTTP (L7) Policies - AI Application Governance
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ai_tools_redirect = 24000 # Redirect unreviewed AI tools to Claude
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chatgpt_allow_log = 24100 # Allow ChatGPT with prompt logging
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# HTTP (L7) Policies - Content Filtering & DLP
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pdf_block = 25000 # Block PDF downloads for Sales Eng (identity-based DLP)
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gambling_block = 25100 # Block gambling websites (category blocking)
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}
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# Common rule settings for block policies
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default_block_settings = {
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block_page_enabled = false
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ip_categories = false
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ip_indicator_feeds = false
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insecure_disable_dnssec_validation = false
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}
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# Gateway policies configuration
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# Organized by policy type: NETWORK (L4) policies first, then HTTP (L7) policies
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# Following Cloudflare best practices with 1000-spacing between major groups
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# Integrates with dashboard-managed policies at precedence: 1000-3000, 5000-20000, 36000-40000
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gateway_policies = {
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#==========================================================
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# NETWORK (L4) POLICIES
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# Port/Protocol/IP-based filtering evaluated before HTTP policies
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# Terraform precedence ranges: 4000, 21000-23000
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# Dashboard precedence ranges: 1000-3000, 36000-37000
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#==========================================================
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# Access Infrastructure Integration (Precedence: 4000)
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access_infra_target = {
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name = "NETWORK-Allow: Access Infra Target Policy"
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description = "Evaluate Access applications before or after specific Gateway policies"
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enabled = true
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action = "allow"
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precedence = local.precedence.access_infra_target
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filters = ["l4"]
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traffic = "access.target"
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notification_enabled = false
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}
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# Zero Trust RDP Access Control (Precedence: 21000)
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rdp_admin_access = {
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name = "NETWORK-Allow: RDP - IT Admin Access Policy [Zero-Trust demo]"
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description = "Allow RDP access for IT administrators with identity and device posture checks"
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enabled = true
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action = "allow"
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precedence = local.precedence.rdp_admin_allow
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filters = ["l4"]
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traffic = "net.dst.ip == 75.0.0.1 and net.dst.port == ${var.cloudflare_domain_controller_rdp_port} and net.protocol == \"tcp\""
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identity = "any(identity.saml_attributes[*] == \"groups=${var.okta_itadmin_saml_group_name}\") or any(identity.saml_attributes[*] == \"groups=${var.okta_infra_admin_saml_group_name}\")"
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device_posture = "any(device_posture.checks.passed[*] == \"${var.cloudflare_macos_posture_id}\") or any(device_posture.checks.passed[*] == \"${var.cloudflare_windows_posture_id}\") or any(device_posture.checks.passed[*] == \"${var.cloudflare_linux_posture_id}\")"
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notification_enabled = false
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}
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# Lateral Movement Prevention - East-West Traffic (Precedence: 22000-22400)
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block_lateral_ssh = {
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name = "NETWORK-Block: SSH Lateral Movement [Zero-Trust demo]"
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description = "Block SSH connections between internal VMs for lateral movement prevention, while allowing direct SSH from WARP clients"
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enabled = true
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action = "block"
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precedence = local.precedence.block_lateral_ssh
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filters = ["l4"]
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traffic = "net.dst.port == 22 and net.protocol == \"tcp\" and (net.dst.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and (net.src.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and not (net.src.ip in {${var.cloudflare_warp_cgnat_cidr}})"
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block_reason = "SSH lateral movement blocked - use authorized access methods or ensure device compliance"
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notification_enabled = true
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}
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block_lateral_rdp = {
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name = "NETWORK-Block: RDP Lateral Movement [Zero-Trust demo]"
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description = "Block RDP connections between internal VMs for lateral movement prevention, while allowing direct RDP from WARP clients"
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enabled = true
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action = "block"
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precedence = local.precedence.block_lateral_rdp
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filters = ["l4"]
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traffic = "net.dst.port == 3389 and net.protocol == \"tcp\" and (net.dst.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and (net.src.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and not (net.src.ip in {${var.cloudflare_warp_cgnat_cidr}})"
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block_reason = "RDP lateral movement blocked - use authorized methods"
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notification_enabled = true
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}
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block_lateral_smb = {
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name = "NETWORK-Block: SMB Lateral Movement [Zero-Trust demo]"
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description = "Block SMB/CIFS connections between internal VMs for lateral movement prevention, while allowing direct SMB from WARP clients"
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enabled = true
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action = "block"
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precedence = local.precedence.block_lateral_smb
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filters = ["l4"]
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traffic = "net.dst.port in {445 139} and net.protocol == \"tcp\" and (net.dst.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and (net.src.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and not (net.src.ip in {${var.cloudflare_warp_cgnat_cidr}})"
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block_reason = "SMB lateral movement blocked - use authorized methods"
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notification_enabled = true
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}
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block_lateral_winrm = {
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name = "NETWORK-Block: WinRM Lateral Movement [Zero-Trust demo]"
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description = "Block WinRM connections between internal VMs for lateral movement prevention, while allowing direct WinRM from WARP clients"
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enabled = true
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action = "block"
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precedence = local.precedence.block_lateral_winrm
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filters = ["l4"]
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traffic = "net.dst.port in {5985 5986} and net.protocol == \"tcp\" and (net.dst.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and (net.src.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and not (net.src.ip in {${var.cloudflare_warp_cgnat_cidr}})"
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block_reason = "WinRM lateral movement blocked - use authorized methods"
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notification_enabled = true
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}
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block_lateral_database = {
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name = "NETWORK-Block: Database Lateral Movement [Zero-Trust demo]"
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description = "Block database connections between internal VMs for lateral movement prevention, while allowing direct database access from WARP clients"
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enabled = true
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action = "block"
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precedence = local.precedence.block_lateral_database
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filters = ["l4"]
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traffic = "net.dst.port in {3306 5432 1433 1521 27017} and net.protocol == \"tcp\" and (net.dst.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and (net.src.ip in {${var.aws_private_cidr} ${var.gcp_infra_cidr} ${var.gcp_windows_rdp_cidr} ${var.gcp_warp_cidr} ${var.azure_subnet_cidr}}) and not (net.src.ip in {${var.cloudflare_warp_cgnat_cidr}})"
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block_reason = "Database lateral movement blocked - use authorized methods"
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notification_enabled = true
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}
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# IP-based Access Control (Precedence: 23000)
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block_ip_access = {
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name = "NETWORK-Block: Access GCP Apps via Private IP [Zero-Trust demo]"
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description = "This rule blocks the access of Competition App and Administration App via ip address and port"
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enabled = true
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action = "block"
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precedence = local.precedence.ip_access_block
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filters = ["l4"]
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traffic = "(net.dst.ip == ${var.gcp_vm_internal_ip} and net.dst.port == ${var.cloudflare_intranet_app_port}) or (net.dst.ip == ${var.gcp_vm_internal_ip} and net.dst.port == ${var.cloudflare_competition_app_port})"
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block_reason = "This website is blocked because you are trying to access an internal app via its IP address"
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notification_enabled = true
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}
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# Default Deny - Evaluated Last (Precedence: 21700)
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rdp_default_deny = {
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name = "NETWORK-Block: Default Deny Policy [Zero-Trust demo]"
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description = "Deny RDP access for users without IT admin privileges (evaluated after allow policy)"
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enabled = true
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action = "block"
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precedence = local.precedence.rdp_default_deny
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filters = ["l4"]
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traffic = "net.dst.ip == ${var.gcp_windows_vm_internal_ip} and net.dst.port == ${var.cloudflare_domain_controller_rdp_port} and net.protocol == \"tcp\""
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block_reason = "RDP access denied - insufficient privileges"
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notification_enabled = true
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}
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#==========================================================
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# HTTP (L7) POLICIES
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# Application/Content-based filtering
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# Terraform precedence ranges: 24000-25100
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# Dashboard precedence ranges: 13000-20000
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# Note: Dashboard Do-Not-Inspect policies (13000-15000) evaluated before Terraform HTTP policies
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#==========================================================
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# AI Application Governance (Precedence: 24000-24100)
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redirect_ai_to_claude = {
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name = "HTTP-Redirect: Redirect users to claude.ai [Zero-Trust demo]"
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description = "Redirect any unreviewed AI application to claude.ai instead"
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enabled = true
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action = "redirect"
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precedence = local.precedence.ai_tools_redirect
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filters = ["http"]
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traffic = "any(app.type.ids[*] in {25}) and any(app.statuses[*] == \"unreviewed\")"
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redirect_url = "https://claude.ai"
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notification_enabled = false
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}
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# Content Filtering & DLP (Precedence: 25000-25100)
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block_pdf_download = {
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name = "HTTP-Block: PDF Files download [Zero-Trust demo]"
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description = "Block Downloading PDF Files for Sales Engineering group"
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enabled = false
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action = "block"
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precedence = local.precedence.pdf_block
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filters = ["http"]
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traffic = "any(http.download.file.types[*] in {\"pdf\"})"
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identity = "any(identity.saml_attributes[*] == \"groups=${var.okta_sales_eng_saml_group_name}\")"
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block_reason = "This download is blocked because it is a pdf file (not approved)"
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notification_enabled = true
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}
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block_gambling = {
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name = "HTTP-Block: Gambling websites [Zero-Trust demo]"
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description = "Block Gambling website according to corporate policies (HTTP)."
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enabled = true
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action = "block"
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precedence = local.precedence.gambling_block
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filters = ["http"]
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traffic = "any(http.request.uri.content_category[*] in {99})"
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identity = "not(any(identity.saml_attributes[*] == \"groups=${var.okta_contractors_saml_group_name}\")) or not(identity.email == \"${var.okta_bob_user_login}\")"
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block_reason = "This website is blocked according to corporate policies (HTTP)"
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notification_enabled = true
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}
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allow_chatgpt_log = {
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name = "HTTP-Allow: ChatGPT logging [Zero-Trust demo]"
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description = "Log ChatGPT requests"
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enabled = true
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action = "allow"
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precedence = local.precedence.chatgpt_allow_log
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filters = ["http"]
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traffic = "any(app.ids[*] == 1199) and any(app_control.controls[*] in {1652})"
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notification_enabled = false
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gen_ai_prompt_log = true
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}
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}
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}
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#==========================================================
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# Gateway Policies
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#==========================================================
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resource "cloudflare_zero_trust_gateway_policy" "policies" {
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for_each = local.gateway_policies
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account_id = var.cloudflare_account_id
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name = each.value.name
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description = each.value.description
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enabled = each.value.enabled
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action = each.value.action
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precedence = each.value.precedence
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filters = each.value.filters
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traffic = each.value.traffic
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# Optional fields
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identity = try(each.value.identity, null)
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device_posture = try(each.value.device_posture, null)
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rule_settings = merge(
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local.default_block_settings,
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{
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block_reason = try(each.value.block_reason, "")
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notification_settings = {
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enabled = try(each.value.notification_enabled, false)
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msg = try(each.value.block_reason, "")
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}
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redirect = try(each.value.redirect_url, null) != null ? {
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target_uri = each.value.redirect_url
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preserve_path_and_query = false
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include_context = false
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} : null
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gen_ai_prompt_log = try(each.value.gen_ai_prompt_log, null) != null ? {
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enabled = each.value.gen_ai_prompt_log
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} : null
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}
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)
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}
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