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The most reliable Minecraft DDoS-defense design is simple: send players through a Minecraft-aware reverse proxy or Layer 4 scrubbing service, keep the origin IP private, and configure the origin firewall to accept game traffic only from that provider.
In other words:
Players → protected proxy or scrubber → firewall-locked origin → Minecraft serverA plugin alone cannot absorb a volumetric attack that saturates your host’s uplink. Nor does placing a domain behind Cloudflare’s ordinary web proxy automatically protect Minecraft traffic. Java and Bedrock also require different network considerations.
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“DDoS attack” describes several different failures, and the correct defense depends on which one is happening.
Volumetric attacks
An attacker may send enough traffic to exhaust your home connection, server port, provider uplink, or upstream routing capacity. By the time packets reach your operating system, a local firewall may be too late. This requires upstream mitigation with more capacity than the attack.
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Transport-layer attacks
TCP SYN floods, connection exhaustion, malformed packets, reflection attacks, and state-table exhaustion target the network stack or proxy. A Layer 3/4 service such as Cloudflare Spectrum is designed to filter this class of traffic and conceal the origin behind a reverse proxy.
Minecraft-protocol and application abuse
A server can remain reachable while excessive joins, ping traffic, encryption-related attacks, bots, or expensive in-game actions overwhelm the proxy or Minecraft process. Minecraft-focused providers such as TCPShield advertise filtering intended for these patterns, but network mitigation does not guarantee healthy TPS or plugin performance.
Origin bypass
The most common architectural mistake is protecting a hostname while leaving the backend IP publicly reachable. Attackers can bypass the proxy through:
- Old DNS records or leaked hostnames.
- Direct-connect posts, screenshots, or server lists.
- Web panels, maps, metrics, voice services, or databases on the same address.
- Reverse-DNS and historical-IP records.
- An unrestricted Minecraft port or a second unprotected listener.
- Leaked proxy configuration or provider-panel information.
IP secrecy helps, but it is not a complete defense. Assume the origin will eventually be discovered and make direct access impossible.
Java, Bedrock, and Geyser are not the same problem
| Deployment | Typical traffic | Protection requirement |
|---|---|---|
| Java Edition | TCP | A TCP-capable Minecraft proxy or Layer 4 service |
| Bedrock Edition | UDP/RakNet | A provider and plan that explicitly support Bedrock traffic |
| Java plus Bedrock through Geyser | TCP and UDP | A design covering both listeners and correctly forwarding player identity |
Cloudflare’s current Spectrum limitations documentation lists Minecraft Java support but not Bedrock. TCPShield documents support for both editions, with Bedrock requiring Premium according to its FAQ. Providers may also use different networks or configuration requirements for Java and Bedrock.
Do not assume that a Java TCP proxy protects a Bedrock UDP/RakNet listener. For cross-play, map each public protocol separately and verify the provider’s Geyser and forwarding instructions.
Does putting Minecraft behind Cloudflare protect it?
Not through Cloudflare’s ordinary DNS or HTTP proxy alone. The standard Cloudflare web proxy is intended for HTTP and HTTPS. Minecraft needs an appropriate TCP or UDP reverse-proxy service.
Cloudflare Spectrum provides Layer 4 proxying for TCP and UDP applications, but it is a separate product. Spectrum can conceal the origin and support Proxy Protocol for client-address information. It is not automatically enabled because your domain uses Cloudflare DNS.
Spectrum can suit a Java server when you already use Cloudflare, need general TCP/UDP edge protection, and can justify the plan and add-on cost. Cloudflare’s documentation says custom TCP/UDP applications may require Enterprise and a paid add-on. Its current limitations page excludes Bedrock, so it is not a universal Java-and-Bedrock answer.
Cloudflare’s Minecraft product pages currently display region- and plan-specific data allowances, including 5 GB or 10 GB monthly signals and $1/GB overage on one listed regional page. Treat those figures as buying information for the reviewed listing, not a universal quote; confirm the current plan, region, port, traffic allowance, and overage terms before purchasing.
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The three practical protection models
1. Minecraft-specific reverse proxy
A service such as TCPShield is usually the most approachable option for a small or medium Minecraft community. It can provide Minecraft-aware filtering, DNS-based routing, Java support, and—under its documented conditions—Bedrock support.
TCPShield advertises a free tier and reports 16 Tbps of Layer 4 capacity and unlimited Layer 7 connections per second in its FAQ. Those are provider-reported network figures, not a guarantee that every individual server will remain playable during every attack. Check current limits, support, bandwidth, and Bedrock conditions before relying on a plan.
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2. General Layer 4 cloud service
Cloudflare Spectrum is better suited to Java operators that need a broader TCP/UDP reverse proxy, already operate inside Cloudflare, or have enterprise-oriented requirements. It may be more expensive and has the current Bedrock limitation described above.
3. Hosting with integrated game mitigation
A provider such as OVHcloud can combine dedicated hardware, routing, and game-specific mitigation. Its current US Bare Metal Game Minecraft page advertises dedicated servers, NVMe storage, 1 Gbps guaranteed bandwidth, unlimited traffic, a 99.95% SLA, and integrated Game DDoS Protection. Its documentation limits Game DDoS Protection to Bare Metal Game dedicated servers.
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The current US page displays starting signals of $179 per month plus a $179 installation fee for Game-1 and $230 per month plus a $230 installation fee for Game-2. A different indexed OVHcloud Minecraft product page lists $90 and $104 monthly prices, illustrating why product family, region, catalog version, taxes, promotions, and installation fees must be checked together.
Integrated hosting is attractive for large modpacks, sustained CPU demand, and operators who prefer one provider. It costs more and does not prevent plugin abuse, bot floods, poor server configuration, or application-level lag.
Build the architecture before the attack
1. Inventory every public endpoint
Write down the Java port, Bedrock port, query and status services, SSH or RDP, control panel, Dynmap or BlueMap, voice chat, databases, APIs, RCON, and monitoring endpoints. Anything that shares the origin IP can reveal it or provide an alternate attack path.
2. Separate public and private services
Where practical, keep the control panel, website, database, and administrative services away from the game origin. Restrict SSH and panel access through a VPN, fixed trusted addresses, or an identity-aware access layer. Disable unused query, RCON, and diagnostic services.
3. Prepare the origin
If the current IP has been exposed, request or provision a replacement address. Changing only the Minecraft port does not make a known IP private. Back up worlds, server.properties, proxy configuration, plugins or mods, permissions, bans, DNS, and firewall rules before migrating.
4. Choose coverage by protocol
Confirm that the selected product handles the actual Java TCP port, Bedrock UDP/RakNet port, or both. A product that protects your website may not protect either game protocol.
TCPShield-style deployment
Dashboard labels can change, so use the provider’s current documentation rather than relying on an old screenshot.
Step 1: Verify the domain
TCPShield’s panel documentation describes verifying domain ownership with a DNS TXT record. The expected result is that the domain is accepted and the Minecraft network can be configured.
Step 2: Add the origin
Enter the backend IP, Minecraft port, edition, and any proxy or routing information requested by the service. Do not publish this origin address in documentation, panel links, status pages, or DNS.
Step 3: Point the public hostname at the provider
Create the CNAME or DNS record using the exact target supplied by the provider. The public hostname should resolve to the protection service, not the backend IP. Remove old records that expose the origin.
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Step 4: Lock the origin firewall
Allow the Minecraft listener only from the provider’s current documented proxy ranges or authenticated mechanism. Never copy a stale CIDR list from a third-party tutorial.
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sudo ufw default allow outgoing
# Replace with your trusted address or VPN range
sudo ufw allow from YOUR_ADMIN_IP to any port 22 proto tcp
# Replace these placeholders with the provider's current ranges
sudo ufw allow from PROXY_CIDR_1 to any port 25565 proto tcp
sudo ufw allow from PROXY_CIDR_2 to any port 25565 proto tcp
sudo ufw enable
sudo ufw status numberedFor Bedrock, use the correct UDP port and provider-specific ranges. Do not open the port globally while testing. A firewall that accepts connections from 0.0.0.0/0 defeats the origin-lockdown design.
Step 5: Configure client-IP forwarding
Without forwarding, the backend may see every player as the proxy. That makes logs, bans, rate limits, and anti-abuse controls less useful.
TCPShield documents Proxy Protocol v2 and a plugin-based alternative. Its FAQ also warns that the plugin can conflict with some anti-VPN tools, anti-bot systems, and proxy forks. The choices are:
- No forwarding: simplest, but backend logs see proxy addresses.
- Proxy Protocol v2: the backend receives client-address metadata and must trust only the configured upstream proxies.
- Vendor-specific secure forwarding: may add stronger proxy authentication, but compatibility must be verified.
Do not enable Proxy Protocol on Paper, Velocity, BungeeCord, Geyser, or another backend unless the upstream service is definitely sending it. A mismatch can break connections or produce incorrect addresses. Never trust arbitrary proxy headers from the public Internet.
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Use the current documentation for your exact combination of Paper, Spigot, Velocity, BungeeCord, Geyser, mods, and forwarding mode. Configure modern forwarding or shared secrets where supported, and ensure that only the intended proxy can reach each backend listener.
Step 7: Test from outside
- Join Java through the public hostname.
- Join Bedrock separately if applicable.
- Confirm the MOTD, server-list ping, whitelist, and bans.
- Check that logs show the real player address when forwarding is enabled.
- Attempt a direct connection to the origin from another network and confirm it fails.
- Test the old IP, panel, SSH, map, voice, and any alternate ports.
- Test restarts, DNS changes, and recovery procedures.
A successful public connection proves only that the proxy works. Direct-origin denial is the decisive security test.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Origin-lockdown checklist
- Replace an exposed origin IP when appropriate.
- Remove stale A, AAAA, SRV, and service records.
- Use the protected hostname as the only public game address.
- Restrict Java TCP traffic to current proxy ranges.
- Restrict Bedrock UDP traffic separately.
- Restrict SSH, panels, databases, and RCON independently.
- Confirm every alternate Minecraft listener is closed or protected.
- Use trusted-proxy restrictions with Proxy Protocol or forwarded addresses.
- Test direct access from an external network after every migration.
- Do not publish the origin in maps, screenshots, status pages, or support messages.
What DDoS protection does not fix
Mitigation can preserve network reachability while the Minecraft process remains unhealthy. Monitor network traffic separately from:
- TPS and MSPT.
- CPU and memory pressure.
- Disk I/O and chunk generation.
- Login rate and concurrent connections.
- Plugin database activity.
- Entities, redstone, farms, and expensive commands.
- Authentication and skin-service delays.
Use queues, login throttling, whitelist or maintenance mode during unusual activity, sensible proxy configuration, and carefully maintained plugins. Do not call an anti-bot plugin “DDoS protection”: it may help with application abuse but cannot absorb a saturated upstream link.
Hardening that belongs alongside mitigation
- Update the operating system, Java runtime, server software, proxy, mods, and plugins.
- Remove abandoned or unnecessary plugins.
- Use strong staff authentication and least privilege.
- Restrict administrative access through a VPN or trusted addresses.
- Keep offline or separately stored backups.
- Monitor joins, failed logins, packet rates, CPU, memory, TPS, and MSPT.
- Separate databases and administration from the game origin where practical.
- Document DNS, firewall, restore, and emergency migration procedures.
These controls address compromise, abuse, and operational failure. They do not absorb an attack that exhausts the connection before it reaches the server.
Responding to an active attack
First 15 minutes
- Determine whether the symptom is total host unreachability, saturated bandwidth, packet flooding, a login flood, Minecraft-process overload, or a plugin or database failure.
- Contact the host or mitigation provider through its security or abuse channel.
- Stop publishing the origin address and check for a proxy bypass.
- If the IP is exposed and the provider recommends it, provision a replacement origin.
- Apply the firewall restrictions before pointing the public hostname to the replacement.
- Preserve timestamps, logs, flow data, and packet captures if the provider requests them.
If the host remains reachable
- Keep SSH and administration restricted to a trusted IP or VPN.
- Do not reboot before collecting useful evidence unless the server is unstable.
- Disable nonessential public services.
- Use whitelist or maintenance mode if login abuse threatens the game process.
- Check for a second exposed port or leaked backend address.
If the host is unreachable
- Use provider console access if available.
- Ask whether mitigation is active, the host was null-routed, or service was suspended.
- Do not repeatedly restart the machine expecting a network flood to disappear.
- Prepare an emergency proxy, migration, or replacement-origin plan.
After recovery
- Replace the leaked IP and remove stale DNS.
- Rotate panel, SSH, database, webhook, and API credentials if exposure is suspected.
- Check plugins, scripts, cron jobs, and server files for unauthorized changes.
- Review staff and player account security.
- Republish only the protected hostname.
- Test direct-origin denial and document the attack path.
Which option should you choose?
| Situation | Defensible starting point | Reason |
|---|---|---|
| Small Java server | Minecraft-specific proxy or protected host | Lower setup complexity and protocol-aware filtering |
| Java server already using Cloudflare | Spectrum, if the plan and cost fit | General Layer 4 proxy and origin masking |
| Bedrock or cross-play | Bedrock-capable Minecraft service or game host | Requires UDP/RakNet coverage; Spectrum currently excludes Bedrock |
| Home-hosted server | Move the origin to a reputable VPS or dedicated provider | Residential uplinks and ISP policies are weak foundations for production hosting |
| Large public network | Multiple protected proxies, locked origins, monitoring, and failover | Reduces dependence on one IP, proxy, or provider |
| Large modded or professional server | Dedicated Game hardware with integrated mitigation | Predictable CPU, storage, bandwidth, and provider-managed filtering |
TCPShield itself warns that residential connections have low throughput and gives no guarantees for home-hosted latency or performance. A home server may be fine for a private experiment, but it is a poor foundation for a public production community.
Buying checklist
Do not compare providers by advertised attack capacity alone. Check:
- Java support.
- Bedrock support and the exact required plan.
- TCP versus UDP coverage.
- Origin masking and firewall-lockdown instructions.
- Proxy Protocol and player-IP handling.
- Minecraft-protocol filtering.
- Traffic limits, overages, and support.
- How quickly you can replace an exposed origin.
- Edge geography and latency.
- CPU quality, backups, and recovery options.
- Abuse, suspension, cancellation, and false-positive policies.
- Whether the protection actually applies to the product family you are buying.
The practical conclusion is not that one provider is universally best. TCPShield is the most approachable Minecraft-specific starting point; Cloudflare Spectrum is a more general Java-oriented Layer 4 option for operators who can justify its pricing and plan requirements; and OVHcloud’s Bare Metal Game range is attractive when dedicated performance and integrated mitigation matter more than a low monthly bill. For every choice, the non-negotiable control is the same: players reach the proxy, while the origin accepts traffic only from trusted protection infrastructure.
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