Put a reverse proxy, CDN, or outbound-only tunnel in front of the server, then make the origin reject every connection that does not come through that front door. Proxy every web DNS record, close direct ingress at the firewall, audit alternate names and DNS-only records, and rotate the address if it was public before. A DNS proxy alone hides an address from ordinary lookups; it does not stop someone who already knows the address from connecting.
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What “hiding the origin IP” actually means
Your origin is the machine that runs the game website, API, launcher backend, admin panel, or other service. Players should normally connect to a public hostname such as play.example.com, not to that machine directly. A reverse proxy or CDN receives the connection, applies its own filtering and DDoS controls, and forwards approved traffic to the origin.
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With a proxied DNS record, a public lookup returns the proxy’s address instead of the origin’s address. Cloudflare describes the intended setup this way: “Set up proxied (orange-clouded) DNS records to hide your origin IP addresses and provide DDoS protection.” That statement describes the DNS view, not a complete network boundary. If the origin still accepts connections from the whole Internet, an attacker who obtains its old address, an alternate hostname, or a leaked endpoint can bypass the proxy.
There are therefore two separate jobs:
- Concealment: publish only the proxy or tunnel endpoint in public DNS.
- Enforcement: configure the origin firewall, security group, or private network so that the proxy or tunnel is the only accepted ingress path.
For the strongest isolation, keep the origin in a private subnet with no public route, or use an outbound-only tunnel from the origin to the provider.
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Choose an architecture before changing DNS
| Approach | Does the origin have a public route? | How ingress is controlled | Operational complexity | Non-HTTP game services | Plan or tier caveat |
|---|---|---|---|---|---|
| Cloudflare proxied DNS/CDN | Usually yes, unless separately isolated | Allow Cloudflare IP ranges at the origin; block all other inbound traffic | Low to medium; DNS, firewall, record and address-rotation work are required | Standard web proxying is aimed at HTTP(S); use a protocol-appropriate product for other traffic | Current limits and paid features vary by account; verify the terms for your service |
| Cloudflare Tunnel | No publicly routable origin address is required | An outbound cloudflared connection carries traffic to the origin |
Medium; you must install, update and monitor the connector | Depends on the tunnel application and protocol you configure; confirm support for the game service | Availability, limits and features vary by plan; verify current terms |
| CloudFront VPC origins | No public route is needed for the private origin | CloudFront is the public entry point; the origin remains in a private subnet | Medium to high; requires VPC, load-balancer or instance design and security-group work | Designed around CloudFront-supported web delivery; use another architecture for unsupported protocols | Required AWS features and current pricing depend on the account and configuration |
| CloudFront plus origin restrictions | Often yes, but direct access is blocked by policy | A secret custom header, security-group restrictions and request conditions can reject direct requests with HTTP 403 | Medium; header validation and source restrictions must remain synchronized | Primarily suitable for HTTP(S) origins | Current feature availability and pricing are not stated here; check AWS documentation for your setup |
A public origin protected only by DNS indirection is the weakest of these designs. A private-subnet origin or outbound-only tunnel removes the public route entirely, which is a stronger control than hoping an undiscovered address stays undiscovered.
Inventory every way the origin could leak
Do this inventory before enabling a proxy. The obvious A record is rarely the only source of disclosure.
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AandAAAArecord that points to the web server, API, launcher, status page, control panel, staging site or monitoring endpoint. - List alternate hostnames used by the game client, internal tools, old versions of the website and regional deployments. One unproxied name can reveal the same address.
- Mark which records are DNS-only. A record that must resolve directly for a non-web service should not be assumed to be protected by the web CDN.
- Review
SPF,TXTand other DNS records. They may reveal infrastructure names or vendors even when the main web record is proxied. - Check where mail is hosted. Avoid placing mail and the protected web origin on the same machine when possible; mail must normally remain reachable through its own service.
- Search your own old DNS records, deployment notes, status posts and configuration files for the address that was used before proxying.
- Identify every exposed endpoint, including development ports and separate IPv6 addresses. A blocked IPv4 address does not protect an accessible IPv6 address.
Keep a written map of hostname, service, address, protocol and intended ingress source. It becomes the checklist for firewall rules and later audits.
Method 1: Put web traffic behind Cloudflare proxying
This method is appropriate for a game site, HTTPS API, account service, patch manifest or web-based control panel. It hides the origin from normal DNS answers while Cloudflare handles the public connection.
1. Add and verify the domain
Add the domain to Cloudflare and complete its DNS delegation or verification process. Do not delete working records before you have copied their current values and TTLs. Record the origin’s existing IPv4 and IPv6 addresses privately; you will need them while configuring the firewall and testing.
2. Proxy every applicable web record
In the DNS section, edit each web-facing A and AAAA record and turn on proxying (the orange-cloud state). Include separate names such as api.example.com, login.example.com and status.example.com if they terminate web traffic at the same origin. Leaving one of them DNS-only can disclose the address you are trying to protect.
Do not blindly proxy records for mail or a protocol that the selected proxy does not support. Instead, put those services on a separate host or use a product designed for that protocol.
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3. Restrict the origin firewall
At the server firewall or cloud security group, allow inbound web ports only from Cloudflare’s published IP ranges. Remove broad rules such as “allow from anywhere” for those ports. Permit administration through a separate, authenticated management path rather than reopening the web ports to the Internet. The firewall is what turns concealment into enforcement.
4. Rotate a previously public address
If the origin address appeared in DNS before proxying, changing DNS does not erase that history. Allocate a new address, update the origin and its allowlists, then retire the old address after traffic has moved. This step matters because an attacker can connect directly to a known old address even though current DNS answers show only Cloudflare.
5. Test both the normal and bypass paths
- Run
dig +short A play.example.comanddig +short AAAA play.example.com. The results should be proxy addresses, not your server’s address. - Load the site and API through their public hostnames. Confirm that the game launcher and browser clients still reach the expected services.
- From a test machine, connect directly to the old or current origin address. The request should be rejected by the firewall, not served by the application.
- Repeat the test over IPv6 if an
AAAArecord exists. - Inspect origin logs. Legitimate web requests should arrive through the proxy path; unexpected source addresses require investigation before launch.
Method 2: Remove the public route with Cloudflare Tunnel
A tunnel is useful when you do not want the origin to have an Internet-routable address at all. The cloudflared daemon on the origin creates outbound-only connections to Cloudflare. Inbound players connect to the public hostname, and the tunnel delivers approved traffic to the local service.
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1. Install and authenticate the connector
Install cloudflared on the origin or on a dedicated connector host, authenticate it to the Cloudflare account, and create a tunnel. Keep the daemon under your normal service-management system so it starts after reboot and produces logs that your monitoring can collect.
2. Map hostnames to local services
Define an ingress rule for each hostname, mapping it to the local web service or API port. Use separate rules for the launcher API, account service and administration interface so that an accidental rule change does not expose every local port.
3. Close inbound exposure
Remove public port-forwarding rules and inbound firewall rules that were needed by the old design. The connector should be able to establish outbound sessions, while unsolicited Internet connections to the origin are rejected. If the machine must retain another public service, isolate that service on a different host or interface.
4. Monitor connector health and failure behavior
A tunnel adds a running component that can stop, lose credentials or fail to reach the provider. Monitor the daemon, its process restarts and request errors. Decide how the game should behave during an outage: a clear maintenance response is safer than opening a temporary direct port that defeats the design.
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Tunnel protocol support depends on the application and configuration. Confirm that the service you intend to publish is supported before migrating a real-time or non-HTTP game endpoint; ordinary web proxying and arbitrary game traffic are not interchangeable.
Method 3: Use CloudFront VPC origins for a private AWS design
CloudFront VPC origins let you keep an Application Load Balancer, Network Load Balancer or EC2 instance in a private subnet while CloudFront is the public entry point. AWS describes the CloudFront-to-origin path as private and secure. This is a network-isolation design rather than a DNS trick.
- Create or select a VPC and private subnet arrangement for the origin. Ensure the origin has no unnecessary public route.
- Place the ALB, NLB or EC2 instance that serves the website or API in that private environment.
- Configure a CloudFront distribution with the VPC origin and the required hostnames, certificates and cache or forwarding behavior.
- Set security groups and network controls so that only the CloudFront path and required internal dependencies can reach the origin.
- Change public DNS to the CloudFront distribution and test the application through the public hostname.
- Verify from outside the VPC that the former origin address is not routable and that no alternate record still exposes it.
This option is a good fit when your game platform already runs in AWS and the web tier can be separated from real-time services. Keep unsupported protocols on a design intended for them rather than forcing all traffic through a web distribution.
Method 4: Restrict direct CloudFront access with a secret header
If the origin must remain reachable by a public route, add an application- and network-level restriction so a random request cannot use it. CloudFront can attach a secret custom header to origin requests. Configure the origin to validate that header, and configure the security group or firewall to accept only CloudFront traffic. AWS also documents request conditions that return HTTP 403 for direct-origin requests.
Configure the header safely
- Generate a long, random value and store it as a secret. Do not use the hostname, an IP address or a value committed to a public repository.
- Configure CloudFront to send the header on origin requests.
- Configure the origin application, load balancer or web server to require the exact header value.
- Reject requests that omit it or present an incorrect value, preferably with HTTP 403.
- Rotate the value by updating the origin validation and CloudFront configuration in a controlled sequence.
The header is not a substitute for source restrictions. Keep the security-group or firewall rule that limits traffic to CloudFront, because a leaked header should not by itself make the origin reachable from anywhere.
Stop common CDN-bypass paths
Direct connections to a known address
Proxying changes DNS answers; it does not remove an existing route. If a direct request still returns the game site, close the port at the origin firewall, rotate the address, or move the origin behind a private subnet or tunnel.
Unproxied and alternate names
Audit every hostname used by clients, dashboards, staging environments and regional services. A single DNS-only record pointing at the same machine defeats the effort for anyone who discovers it.
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Old addresses and DNS history
Historical DNS data can preserve an address that is no longer in current records. Rotation is the practical response when the address was publicly published. Retire the old allocation instead of assuming that changing the record made it secret.
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Mail records and TXT or SPF data can reveal infrastructure relationships. Keep mail separate from the web origin where possible, and review these records during every DNS change.
IPv6 and forgotten endpoints
Apply the same policy to AAAA records, load-balancer listeners, health-check ports and administrative endpoints. Closing only the IPv4 web port leaves an IPv6 or secondary listener as a bypass.
Verify the result without taking the game offline
Use a staged hostname or maintenance window for destructive tests. A practical verification sequence is:
- Resolve every public hostname from more than one network and confirm that web records return proxy or distribution addresses.
- Request each hostname normally and verify the expected status, authentication flow and game-client behavior.
- Attempt a direct connection to the old origin address and to any newly retired address. Expect a timeout or firewall rejection, not application content.
- Test both IPv4 and IPv6 paths where applicable.
- Review firewall, proxy, tunnel and application logs for unexpected source addresses or requests that bypass the normal hostname.
- Temporarily stop the tunnel connector in a test environment and confirm that the public service fails closed rather than exposing a backup port.
- Document the final DNS records, allowed source ranges, private routes and rotation procedure so an emergency deployment does not reintroduce a public origin.
Considerations for game servers and non-HTTP traffic
A game ecosystem often contains several different services: a website, account API, patch download host, matchmaking endpoint, telemetry collector and the actual real-time game server. A web CDN can protect the first group only when their protocols are supported by that proxy. It does not automatically hide or carry every UDP or custom TCP service simply because the DNS name is proxied.
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Keep the real-time server on a separate address or private segment when practical. A compromise or misconfiguration in the public web tier should not expose the game session host, database or administrative network.
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Troubleshooting guide
DNS still shows the origin address
Check both A and AAAA records, then inspect alternate hostnames and DNS-only records. If the record is intentionally direct for a non-web service, it needs its own protection plan; do not assume the web proxy covers it.
The site works through the proxy but the origin is still reachable
Your firewall or security group is permitting broad inbound traffic. Replace the rule with the provider’s published source ranges, a private-network rule, or an outbound-only tunnel. Rotate the address if it was previously public.
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CloudFront returns 403 after adding restrictions
Confirm that CloudFront sends the exact custom header expected by the origin, that the origin validation is deployed, and that security groups allow the CloudFront path. Test through the distribution rather than directly against the origin.
The tunnel hostname is unavailable
Check that the cloudflared service is running, authenticated and able to make outbound connections. Review connector logs and monitoring, then verify that the local service and ingress mapping still use the intended port. Do not “fix” an outage by opening the origin to the whole Internet.
Some players connect while others cannot
Compare protocol, address family and hostname. A client may be using an unproxied IPv6 record, an old hostname, or a real-time protocol that the selected web proxy does not carry. Route that service through a compatible architecture instead of weakening the web origin’s firewall.
A practical decision rule
- Choose proxied Cloudflare DNS/CDN when the service is web-based and you can allowlist Cloudflare at the origin.
- Choose Cloudflare Tunnel when eliminating a public origin route is more important than minimizing operational components.
- Choose CloudFront VPC origins when the workload belongs in AWS and you can place the origin in a private subnet.
- Choose CloudFront restrictions when a public route remains necessary but you can enforce a secret header, source controls and 403 conditions together.
Whichever path you choose, the success criterion is not merely that a DNS lookup fails to reveal the address. The origin must also reject direct Internet traffic, every alternate hostname and every forgotten address. That combination—proxy or tunnel in front, enforced ingress at the origin, and address rotation after prior exposure—is what keeps players and attackers from bypassing the public front door.
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