Here’s the short version: a subscription provides configuration, a node is a connection endpoint, a route determines the path traffic takes, a protocol defines how data is transmitted, and traffic rules decide which requests use the proxy. These are separate layers; none alone tells you how fast or private an entire service will be.
What people call a “VPN client” may actually be a proxy client. A traditional VPN typically creates a network-layer tunnel, while proxy software may handle traffic through system proxy settings or a virtual network interface. Both can show “Connected,” but they may not handle the same traffic. Knowing the difference is more useful than memorizing protocol abbreviations.
Subscriptions, Subscription Links, and Nodes
“Subscription” can refer to billing or configuration. A monthly subscription describes a plan’s validity period and data allowance; “Update subscription” in a client usually means fetching configuration again, not renewing your plan. A successful update only means the client received readable content—it doesn’t confirm your remaining plan balance or that every route will connect.
A subscription link is an address used to fetch configuration and may contain account-specific credentials. The client uses it to retrieve node addresses, ports, authentication details, and sometimes rules and proxy groups. It isn’t an ordinary URL for browsing the web, and you shouldn’t post it on public forums or enter it into unknown conversion sites. If you need help, hide the full link, token, and QR code.
A node is a connection profile you can select in a client. The region in its name usually refers to the advertised exit region, but the entry point, actual route, and exit location are not necessarily the same. Multiple node names may also share infrastructure, so a longer node list doesn’t mean more independent physical routes.
| Term | What it does | Common misconception |
|---|---|---|
| Plan subscription | Sets the service period, data allowance, and billing terms | Updating configuration renews the plan |
| Subscription link | Provides configuration that the client can refresh | Every client can read it directly |
| Node | Stores the settings needed to connect to an endpoint | The region in its name describes the entire data route |
| Proxy group | Organizes nodes and lets you choose manually or automatically | Automatic selection always suits your current use |
Dedicated Routes, Relays, and Direct Connections: It’s About the Path
A route describes how data travels from your local network to an exit point. A direct connection usually means the client connects to an overseas server without a domestic relay entry arranged by the service provider. It still travels over carrier networks; there isn’t a dedicated cable between your device and the server. Performance depends on local access, carrier peering, and congestion at international gateways.
A relay route usually connects first to an entry point that’s easier to reach, which then forwards traffic to another node. This may improve one part of the route, but it can also add forwarding overhead. The word “relay” alone doesn’t tell you whether the rest of the route is congested, or guarantee the same experience at all times.
IEPL stands for International Ethernet Private Line and refers to dedicated transport provided by a carrier. If a subscription service uses IEPL, it typically applies to one segment of the overall route—not necessarily the entire path from your home connection, through the service exit, to the destination website. A dedicated line doesn’t necessarily mean exclusive bandwidth, and the label alone can’t guarantee stability.
For video calls, remote desktops, and streaming, packet loss, jitter, and buffering over a sustained session are more useful indicators than a single latency test in the node list. Latency tests can differ in their targets and methods, and may not cover the full route to the website you want to reach.
Common Protocols: Compatibility Matters More Than Rankings
A protocol defines how the client and server exchange, authenticate, and encapsulate data. A subscription format defines how configuration is represented. A client’s ability to read a subscription format doesn’t mean its core supports every protocol in that configuration; features can also vary between client versions for the same protocol.
- Shadowsocks: An encrypted proxy protocol, not a traditional network-layer VPN. Supported encryption methods and features depend on the implementation, so matching names alone don’t guarantee compatibility.
- VMess: A protocol for proxy communication. The client and server must have matching authentication and transport settings. It’s neither a route type nor a speed rating.
- Trojan: Typically relies on TLS to protect communications. The server name and certificate validation are important settings. If you see a certificate error, check the configuration instead of routinely disabling validation.
- VLESS: The protocol itself doesn’t provide general-purpose traffic encryption. Its security depends on the transport security used alongside it, such as TLS or REALITY. The protocol name alone isn’t a complete security solution.
- Hysteria2 and TUIC: QUIC-based proxy protocols that rely on UDP. They may not connect on networks that restrict or block UDP; other TCP apps working normally doesn’t rule out this issue.
These are explanations of protocol terms, not a claim that XixiVPN offers every protocol listed. Check the configuration in your user panel, client documentation, and current software version for actual support. Don’t hand your subscription to an unknown tool just to convert it for a particular protocol.
Global Mode, Rules, and TUN: Which Traffic Gets Handled
Rule-based mode uses conditions such as domains, destination addresses, processes, or other criteria to decide whether traffic connects directly, uses a proxy, or is blocked. Available conditions depend on the client and its core. A common setup sends local services direct and routes services that need a proxy through a selected proxy group. Whether the rules work as intended also depends on their order and the final fallback rule.
Global mode usually means that requests already handled by the proxy core are sent through a single proxy strategy. It doesn’t necessarily cover all traffic on the device. If only the system proxy is enabled, apps that ignore system proxy settings may still connect directly. Switching to global mode won’t help if the target app’s traffic never reaches the client.
TUN is a virtual network interface that can capture traffic from more apps, but it requires the relevant system permissions and routing configuration. TUN and rule-based mode aren’t mutually exclusive: TUN brings traffic into the client, and rules determine where it goes. Whether DNS is handled and IPv6 is routed also depends on the configuration.
How to troubleshoot: First confirm that traffic reaches the client, then check which rule matched, and finally check the selected node. If an app won’t connect, don’t change the protocol, route, and traffic mode all at once.
Importing a Configuration: Check Each Step
Desktop clients commonly handle traffic through system proxy settings or TUN. Starting at login doesn’t mean the client will connect automatically; check the relevant permissions and settings. Mobile clients often use the system’s VPN interface to capture traffic, but a VPN indicator in the system status doesn’t mean the client is using a traditional VPN protocol. Menu names vary by platform.
- Get the client from a trusted source. Check the operating system and version requirements first. XixiVPN’s client downloads are available in the user panel. An active plan is required to get the iOS download link; on other platforms, you can access the client after signing in.
- Choose a compatible configuration format. Follow the client’s instructions in the panel to copy the subscription link, then use the client’s import or add-configuration feature. Don’t mistake the sign-in page URL for a subscription link.
- Make sure the configuration loaded. Check that nodes and proxy groups appear. If parsing fails, check the format and compatibility first. If nodes appear but won’t connect, check authentication, network access, and plan status.
- Enable the right traffic-handling mode. Follow the instructions to enable the system proxy or TUN, then select an available node. If another network-routing tool is running, check for route or port conflicts first.
- Test the apps you actually use. Check both websites and the apps you need to access. Visit My IP to check your exit address, but remember that a browser’s result may not reflect what happens in every app.
- Keep details you can use to troubleshoot. Note the affected app, the mode in use, the error message, and the circumstances. Before contacting support, remove account credentials and subscription links from logs.
DNS Leaks, Anonymity, and No-Logs Policies
DNS translates domain names into addresses. A DNS leak usually means that requests which were expected to use a tunnel or proxy instead took an unintended route over the local network. A local DNS lookup explicitly allowed by your rules isn’t necessarily a leak; first check what your configuration is supposed to do.
Your browser may use encrypted DNS, and your client may also handle DNS. If both are enabled, check which resolver is actually used. Test pages can offer clues, but seeing the name of a particular resolver isn’t enough to reach a definitive conclusion. Also check browser settings, the client’s DNS mode, and IPv6 routing.
XixiVPN describes its privacy policy as “anonymous, no logs.” This is a statement about the service’s policy; it doesn’t automatically remove accounts you’re signed into on websites, browser cookies, or device identifiers. Protect subscription credentials, keep your system updated, and manage website accounts separately.
- ✅ Verify the client’s source before importing; share your subscription link only with a trusted client.
- ✅ After connecting, check your exit address, target apps, and DNS route separately—not just the status icon.
- ✅ Change one setting at a time while troubleshooting, and note whether each change helps.
- ❌ Don’t assume that “global mode” means all traffic is being handled.
- ❌ Don’t treat a dedicated-route label, protocol name, or no-logs policy as an absolute guarantee.
Remember the order: your plan sets the terms of use, the subscription provides configuration, the client handles traffic, rules choose where it goes, and nodes and routes carry it to its destination. For setup help, start with the beginner’s guide. To compare entry points and regions, see the route list. Identify which layer is causing the issue before changing its settings for results that are easier to verify.