Learn how to implement effective DDoS protection for FiveM. Secure your server against attackers with proven strategies.
The most reliable method for DDoS protection on FiveM is a combination of three layers: hide the origin IP behind a proxy chain, use kernel-level XDP/eBPF filters, and specifically harden the FiveM-typical endpoints with nginx and iptables. The reason lies in the nature of the traffic itself: FiveM uses TCP for handshakes and resource downloads and UDP for real-time game traffic, both over the same port 30120. A simple block rule is not enough here, because it either locks out legitimate players or lets attackers through.
You should implement three immediate measures today, before getting into the details of the architecture:
sv_endpointprivacy in server.cfg to remove the real server IP from public listings/players.json and /info.json with rate limiting or cachingPro tip: If you implement only one of these three measures, you remain vulnerable. Only the combination of kernel filtering, a hidden origin and L7 hardening makes a FiveM server truly resilient against common attack patterns.
Effective DDoS protection for FiveM only comes from combining kernel filtering, a hidden origin IP and targeted hardening of the public endpoints, not from a single measure.
| Topic | Details |
|---|---|
| Mixed traffic | FiveM uses TCP and UDP on the same port, so it requires combined L3/L4 and L7 mitigation. |
| Kernel filtering first | XDP/eBPF intercepts attacks directly at the network driver, before they consume CPU resources. |
| Hide the origin | Proxy chains and per-player routing limit the damage of targeted attacks on individual sessions. |
| Harden JSON endpoints | Micro-caching and limit_req protect /players.json and /info.json from scraping abuse. |
| Nexthosting as a foundation | Nexthosting offers FiveM hosting with integrated DDoS protection as a ready-made foundation for this architecture. |
XDP (eXpress Data Path) and eBPF act exactly where attacks are cheapest to fend off: directly at the network driver, before a packet even reaches the regular kernel network stack. This saves CPU cycles and prevents the latency spikes that occur under load with classic iptables filtering. Projects such as FiveM-Sentinel use XDP/eBPF specifically to drop packets before the kernel stack and to generate SYN cookies, which significantly mitigates SYN flood attacks.
The principle is unspectacular but effective: an XDP program inspects every incoming packet directly at the network interface, as explained in detail at IP Spoofing - Yubico Επίσημο ηλεκτρονικό κατάστημα. It discards suspicious packets via line-rate drops, applies SYN cookie mechanisms against forged connection attempts, and manages per-source token buckets that allow individual IPs only a limited packet rate.
Where XDP reaches its limits is the pure saturation of your line bandwidth. No kernel filter helps against that, no matter how efficiently it works. For volumetric attacks that exhaust the physical bandwidth, you need provider-level mitigation or anycast scrubbing.
For day-to-day operation, keep the following in mind:
Pro tip: Test XDP rules in observation mode first before you enforce them. A misconfigured token bucket can, in the worst case, block your own players instead of the attackers.
The basic idea is simple: nobody except you knows the real IP address of your FiveM server. All connections run through an upstream chain that intercepts attacks before they ever reach the origin.
The typical topology looks like this:
The per-player proxy concept is particularly interesting for roleplay servers with many parallel sessions. Instead of a single central proxy, each player connection gets its own dynamically assigned route. This isolation limits the damage of a targeted attack to individual players instead of endangering the entire server infrastructure. If a proxy instance fails, only the sessions bound to it are affected, not the entire server.
Conceptually, this can be supported through several server.cfg parameters:
sv_endpointprivacy hides the origin IP from public server listingssv_listingIPOverride lets you specify a different IP in the listing than the actual origin addresssv_proxyIPRanges defines which IP ranges are treated as trusted proxies and have their forwarding headers acceptedKernel filters and proxy chains block a lot, but Layer 7 abuse requires its own measures. A frequently underestimated problem is the scraping of the public endpoints /players.json and /info.json. Bots query these endpoints at high frequency to collect player lists or to analyze server data in preparation for attacks. Abuse of the /client endpoint, through which connection requests run, is similar in nature.
The solution is a combination of two nginx mechanisms: a micro-cache with a short validity period (one to two seconds is usually enough) absorbs repeated requests without real player data going stale. In parallel, limit_req restricts the request rate per IP and prevents a single client from flooding the endpoint with requests. An additional anti-scraping layer with nginx caching and rate limiting effectively protects the JSON endpoints from automated abuse.
An often overlooked point: txAdmin should run on its own port, separate from the public FiveM port. If the admin panel is routed over the same port as the game traffic, the attack surface grows unnecessarily.
/players.json and /info.jsonlimit_req per IP address and endpointPro tip: Combine edge caching with server-side rate limiting. If you use only one of the two layers, you either let too many requests through to the origin or block legitimate player clients that share the same IP as a bot (for example behind a corporate NAT).
iptables, ipset and nftables form the practical foundation of any FiveM firewall. ipset is particularly valuable because it lets you manage large sets of IP addresses efficiently, without every single entry ending up as its own rule in the active ruleset.
Here is how to build a practical firewall automation:
ipset for time-limited whitelists that automatically unlock freshly connected players for a defined durationraw table in iptables for early filtering, so that suspicious packets are dropped before they go through the more expensive connection tracking stepsplayerConnecting or an API integration, so that new players are unlocked without manual interventiontcp_syncookies in the system kernel to cushion SYN flood attacks in addition to the XDP layerconntrack table size regularly, because a table that is too small can drop even legitimate connections under loadAutomated orchestration through a FiveM resource that reacts to playerConnecting enables nearly maintenance-free management of the protection chain. This not only reduces your effort but also prevents configuration drift between multiple servers.
You should continuously watch four metrics, because they almost always spike first:
A monitoring stack with automatic threshold alerts (for example via Prometheus with Grafana or comparable tools) should not only send notifications when a threshold is exceeded, but also be able to trigger automatic countermeasures, such as temporarily tightening rate limits.
The escalation chain follows a clear logic: first, the on-box filters from XDP and iptables kick in. If that is not enough, managed scrubbing by a specialized provider follows. The last step is an IP change or, in extreme cases, a change of provider if the attacks permanently overload the infrastructure.
If you are starting with limited time, follow this order:
sv_endpointprivacy and immediately secure the JSON endpoints with caching or blockingipset automation for whitelisting via playerConnectingPro tip: Run the attack simulation outside peak hours and inform your active admins beforehand. Nothing causes more confusion than a load test that looks like a real attack while a community event is running.
If you don't want to build the protection layers described here entirely yourself, Nexthosting offers infrastructure designed for exactly that. The game server, VPS and dedicated server offerings come with DDoS protection and technical support, which already provides the foundation for many of the measures above.
For admins who prefer to get hands-on themselves but want to rely on stable base infrastructure, there is plenty of room for custom XDP or nginx configurations.
Most server operators don't have the resources to implement everything at once. My order would be clear: first hide the origin and harden the JSON endpoints, which takes hardly any effort and closes the most obvious gaps. Next comes a proxy chain or a managed service, because it takes over the largest part of the attack surface. XDP/eBPF at the kernel level is the cleanest solution in the long run, but it requires system knowledge that not every admin can build up on the side. Anyone who reverses this order wastes time on perfection while the obvious gaps stay open.
— Erik
Instead of assembling every layer yourself, you hand off the baseline infrastructure load that, with FiveM, demands expertise and ongoing maintenance anyway. Nexthosting delivers game server hosting with DDoS protection and a German location, ready to use, so you can focus on running the server and your community instead of firewall maintenance. If you also want to run your own customizations such as XDP rules or proxy configurations, the VPS offerings from Nexthosting give you enough control for individual setups. Take a look at the FiveM hosting page and check which plan fits your server size, which is especially worthwhile if you are just starting to build your protection architecture.
The most effective approach is a layered strategy combining kernel filters such as XDP/eBPF, an upstream proxy chain that hides the origin IP, and targeted rate limiting at the application layer. With mixed TCP/UDP traffic like FiveM's, individual measures on their own are usually not enough.
DDoS protection refers to measures that prevent a server from being overloaded by massive amounts of artificially generated traffic and becoming unreachable for real users. For FiveM servers, this includes both network filtering and securing the public server endpoints.
FiveM is under active development and is currently the dominant platform for GTA roleplay servers; no specific end date is in sight. The continuing large number of active servers and communities points to ongoing development.
FiveM continues to run stably and is used by a large community of server operators and players. Occasional discussions about legal or technical changes usually concern individual aspects of the project, not the platform as a whole.
Parameters such as sv_endpointprivacy and sv_proxyIPRanges in server.cfg are among the cheapest and most effective immediate measures, because they obscure the origin IP without requiring additional infrastructure. However, they do not replace kernel filtering or a proxy architecture in the case of larger attacks.
For small to medium FiveM servers, a VPS with basic DDoS protection is often enough, for example through Nexthosting, as long as endpoint hardening and origin obfuscation are implemented as well. For large roleplay communities with high visibility, a dedicated proxy layer is also worthwhile.