Peer-to-Peer Hosting, NAT Behaviour and Proxy Scope for 7 Days to Die

The shortest way to understand 7 Days to Die from a network perspective is to accept that the game does not connect to a single central server. The platform client verifies the library and version, the game client queries the server list, and the world session talks directly to the machine you selected. These three jobs are carried over different protocols, and a single proxy rule may not cover all of them at once.

The second distinction is hosting. When you open the game from your own client, your machine simultaneously takes on the server role and your friends connect to you; on a dedicated server, you are a client too. In the first case, where inbound connections must be accepted, there is nothing to expect from a proxy, because a classic proxy does not carry an inbound session to you.

The third is setting expectations: a proxy is a routing decision that adds a stop to your path. Your exit address changes; your in-game latency does not go down in most setups. Every recommendation on this page was written within that framework.

Where does traffic go in a 7 Days to Die session?

When you start the game, the first party it talks to is not the game world but the platform layer: library verification, version comparison and, if there is one, the update download. These jobs are carried over TCP on HTTPS, so they enter an HTTP proxy's CONNECT tunnel without trouble. The same applies to store pages and account screens; these are ordinary web traffic and are technically the easiest part to bring into the proxy's scope. You can find step by step how values are entered into the platform client's own proxy fields in the platform client proxy settings article.

The second part is the server list. The client sends short queries to the listed machines and uses the responses to show the player count, version and estimated latency. These queries are small but numerous; when the list is refreshed, packets go out to a large number of targets at once. Query traffic is commonly carried over UDP on the game side, so it does not enter a tunnel that carries only TCP and goes out over your ordinary line.

The third and most sensitive part is the world session. Character position, block changes, damage notifications and AI movement flow continuously; since sending the next state makes more sense than re-requesting a lost packet, this traffic leans on UDP. The fourth part is mod and content downloads: large files, over TCP, one-off but bulky.

The difference between a game you open on your own machine and a dedicated server

When you open the game through the client, your machine is both where you play and the endpoint other players connect to. In this case what matters is your home network: whether your router can map inbound packets to the inside, whether your line gets a real public IP, and whether your operator places you behind a shared address pool. None of this changes by defining a proxy on the client.

In the dedicated server model, the roles are simpler. The server runs on a separate machine, listens on a fixed address, and accepting inbound connections is its job. You are only the connecting side; since you establish an outbound connection, whether your home network is open to inbound traffic loses its importance. If you want a permanently open world for your own group, this model is both more predictable and not dependent on the host's computer staying on.

The practical conclusion is this: the answer to "my friends cannot connect to me" is almost never a proxy. This is an inbound connection problem, and the fix is either a mapping rule on the router or a separate machine that takes on the listening role.

NAT type and hole punching: what a proxy does not solve

On home networks, devices use private addresses and the router keeps a mapping table for every outbound connection. A packet arriving from outside cannot reach the inside unless it has an entry in that table. To get past this obstacle, games use simultaneous outbound packet sending: when both sides send packets towards each other, a mapping opens on both routers and traffic starts flowing. Whether this method works depends on how the router establishes the mapping.

Two situations make this method harder. The first is strict mapping behaviour that assigns a different external port for every new target; the other side cannot send a packet to a port it cannot predict. The second is carrier-grade address translation, where the operator does not give subscribers individual public addresses but shares a single address across many lines. In this second case, even if you define a port mapping on your own router, the packet stops at the operator before it reaches you. The difference between address translation and a proxy is explained in detail in proxy and NAT comparison .

Where does a proxy sit in this picture? A classic HTTP proxy only carries outbound connections that you open; it is not a listener and cannot accept an inbound session for you. Although the SOCKS5 protocol does define a method for inbound connections, scenarios where game clients use it are practically non-existent. If you are going to be the host, the right tools are, in order: a mapping rule on the router, a request to the operator for a real public address, or a dedicated server.

• If you are not the host, NAT type is usually not your problem.
• "The server does not appear in the list" and "I cannot connect" are different symptoms; the first is the query layer, the second the session layer.
• You can tell whether your line gets a real public address by comparing the WAN address in the router interface with an external IP lookup.

Which traffic enters the tunnel and which stays outside?

An HTTP proxy sits at the application layer and opens a TCP tunnel for encrypted connections using the CONNECT method. Only TCP passes through this tunnel; UDP is not carried. SOCKS5, on the other hand, is at the transport layer and can carry UDP with the UDP ASSOCIATE method — but for that, both the proxy server must keep this method enabled and the client must know how to use it. Since most game clients do not even have a proxy field, the second condition is usually not met. How the method works is explained in detail in the SOCKS5 UDP support article; for the protocol itself see SOCKS5 proxy page for more details.

Although this table may look like bad news, it actually clarifies the scope. You use a proxy not to carry the in-game session, but to route the side where your account is opened and files are downloaded through a specific exit. This is also the part that is most useful on corporate or campus networks: downloads and sign-in can be routed while the game session works to the extent the network policy allows.

One warning: when the tunnel cannot be established, some clients silently fall back to a direct connection. You see no error message, the game starts and everything appears fine. The only reliable way to verify the scope is to read your exit address from an independent page while the proxy is on and compare it with the address you expect.

Exit location and the length of the route

Because a proxy adds a stop, the total path gets longer. The packet goes first to the exit server, from there to the target, and the response returns along the same path. For that reason the exit's geographical location can be more decisive than the choice of type: the difference between an exit in the same city and one on another continent is felt in response time far more than in download speed. If you play from Turkey and connect to European servers, keeping local platform traffic consistent with an address with a Turkish exit produces less friction than an intercontinental exit.

Not only distance but also the load the exit is carrying at that moment affects the result. On a shared pool there can be a measurable difference between evening and morning hours; a one-off measurement hides this variable. Before putting an exit to work, measure it at least twice at different times and note the result.

Stay away from chained setups. Running a tunnel and a proxy at the same time makes it impossible to find which layer is at fault when something goes wrong, and each layer adds its own share to the path. Start with a single layer, measure, and change it if necessary.