Cloudflare One Migrations Skill Security Audit

2122- ZIA: URL filtering, firewall filtering, SSL inspection, DLP, custom URL categories, IP groups, network services/service groups, users/groups/departments, locations, GRE tunnels, and static IPs.23- ZPA: app segments, segment groups, server groups, app connectors/connector groups, access policies, IdP/group mapping, private DNS domains, ports, and protocols.24- Palo Alto/Prisma: security/NAT/decryption rules, address/service objects and groups, URL categories, HIP profiles, GlobalProtect config, Prisma Access remote network/service connection config, zones, tags, logs, and hit counts.25

59- Create one Cloudflare Tunnel per ZPA connector group regardless of connector runtime status (AUTHENTICATED, DISCONNECTED, or disabled). Status is operational, not architectural. Tag disconnected or legacy groups in the tunnel description and let the customer decide what to decommission after validation.60- Each ZPA connector instance within a group maps to one cloudflared replica running against that tunnel's token. Match replica count to connector instance count per group to preserve the same topology. A single tunnel token supports multiple simultaneous cloudflared processes. Recommend installing replicas within the same data center but on different hosts or subnets.61- For each connector group, identify all server groups linked to it and all app segments assigned to those server groups. IP addresses and CIDRs in those app segments become CIDR routes on the corresponding tunnel; domain names become hostname routes on the same tunnel. Prefer one CIDR route per subnet over per-host /32 routes where a broad subnet covers all app segment IPs.

60- Each ZPA connector instance within a group maps to one cloudflared replica running against that tunnel's token. Match replica count to connector instance count per group to preserve the same topology. A single tunnel token supports multiple simultaneous cloudflared processes. Recommend installing replicas within the same data center but on different hosts or subnets.61- For each connector group, identify all server groups linked to it and all app segments assigned to those server groups. IP addresses and CIDRs in those app segments become CIDR routes on the corresponding tunnel; domain names become hostname routes on the same tunnel. Prefer one CIDR route per subnet over per-host /32 routes where a broad subnet covers all app segment IPs.62- ZPA bypass means split-tunnel bypass in Cloudflare, not an Access `bypass` decision. Bypass rules map to WARP [Split Tunnel](https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/configure/route-traffic/split-tunnels/) exclude entries. This is a manual configuration step with no API automation - the customer must add bypassed domains and IPs to the device profile split tunnel exclude list through the dashboard.

165. Create dependencies first: identity/[SCIM](https://developers.cloudflare.com/cloudflare-one/team-and-resources/users/scim/), connectors/on-ramps, routes/DNS, lists/objects, TLS bypasses, Access apps/policies, Gateway policies, DLP/CASB, logging.176. Stage safely: use a migration prefix, create disabled/audit-mode rules by default, pilot with small groups/sites, compare logs, then expand rollout.187. Account for every source rule. Each rule must map to a Cloudflare object or an explicit Not Migrated row with reason and security impact.

67- Each ZPA access policy rule maps to a Cloudflare reusable Access policy. Create all reusable policies before attaching them to Access apps. In default-deny Gateway Network environments, additionally create a Network allow rule with selector "Self-hosted Access App with Private Address is Present" (wirefilter: `any(access.private_app[*] in {"*"})`) at higher precedence than any broad L4 block rules - without it, Gateway blocks private app traffic before Access policy evaluation occurs.68- In combined ZIA and ZPA migrations, Gateway Network rules can accidentally block Access private-app traffic. The Gateway Network allow rule above is the fix - place it at higher precedence (lower number) than ZIA-migrated block rules. Add and validate this rule before enabling broad L4 blocks.69

39- TLS/DLP readiness: source decryption rules, certificate-pinned bypasses, [DLP](https://developers.cloudflare.com/cloudflare-one/data-loss-prevention/) engines/profiles, custom regex, exact-match data, and payload logging expectations.40- Connectivity readiness: source tunnels/connectors, private DNS, [Split Tunnels](https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/configure/route-traffic/split-tunnels/) or bypass behavior, source IP preservation, [egress IP](https://developers.cloudflare.com/cloudflare-one/traffic-policies/egress-policies/) allowlists, and site-to-site requirements.41- Rollout readiness: pilot groups/sites, parallel-run period, rollback owner, source-stack decommission criteria, and monitoring/log comparison plan.