Why Share Clash Across a Home Network?
Running Clash on one laptop is useful, but a home network often contains far more devices than a single desktop: phones, tablets, smart televisions, game consoles, streaming boxes, workstations, and small servers. Configuring every device separately can be inconvenient, and some devices do not support proxy settings at all. A router-based Clash deployment solves this problem by placing traffic control at the network boundary. Devices connect to the home network normally, while the router or a dedicated side-router decides which traffic should go DIRECT and which traffic should use a selected proxy policy.
In 2026, the most practical approach is usually based on a Mihomo-compatible client or firmware environment. The exact interface differs between Clash-compatible routers, OpenWrt packages, mini PCs, and desktop clients such as Clash Verge Rev, but the underlying principles remain the same: provide a reachable proxy service, allow selected LAN clients to use it, keep local destinations direct, and make DNS behavior consistent with your routing rules.
This guide compares two common designs: running Clash directly on the main router and using a separate side-router connected to the existing network. It then walks through LAN access, DNS, policy groups, device selection, testing, and maintenance. The goal is not to force every packet through a remote server. A well-designed home setup should send local services and latency-sensitive traffic directly, while routing only the destinations that actually need a proxy.
Practical Goal
Connect multiple household devices through one manageable Clash gateway without slowing down local services, breaking gaming, or creating confusing DNS leaks.
1Choose the Right Home-Network Architecture
The first decision is where the Clash core should run. There is no universally best design because your choice depends on router hardware, firmware support, available Ethernet ports, expected bandwidth, and how much control you want over individual devices. Before making changes, draw a simple network map and record the current router address, DHCP range, Wi-Fi networks, and any important local services such as NAS shares, printers, cameras, or home automation hubs.
Clash on the Main Router
In this design, the primary router performs normal routing, DHCP, Wi-Fi management, and proxy policy enforcement. Every client can use the same gateway without additional network equipment. This is convenient for families because phones and televisions join the existing Wi-Fi network and inherit the intended behavior automatically.
- Advantages: fewer devices, simpler cabling, centralized DHCP, and an easier experience for non-technical household members.
- Limitations: limited CPU or memory may reduce throughput, and a firmware update or Clash restart can affect the entire home.
- Best fit: routers with reliable OpenWrt or Mihomo support, sufficient RAM, and a stable wired connection to the upstream modem.
Check hardware performance before enabling TUN mode, encrypted DNS, rule providers, and several concurrent proxy connections. A low-powered router may handle ordinary rule-based HTTP and TCP traffic well but struggle with heavy encrypted DNS, large rule sets, or high-speed UDP forwarding. Start with a modest configuration and measure real throughput instead of relying only on the router's theoretical specifications.
Clash on a Side-Router
A side-router is a second router or small computer dedicated to Clash. The existing main router continues to provide internet access, while selected devices use the side-router as their gateway. This approach is often the safest way to experiment because the original network can remain unchanged until the new route has been tested.
- Advantages: easier rollback, stronger hardware choices, independent updates, and better separation between ordinary home routing and proxy experiments.
- Limitations: an additional Ethernet cable, a second LAN subnet, and more careful handling of double NAT and device discovery.
- Best fit: users with an unused OpenWrt router, a mini PC, a home server, or a need to apply proxy rules only to selected rooms or devices.
There are two common side-router modes. In gateway mode, the side-router creates its own LAN and performs DHCP for clients connected to it. This offers the clearest routing boundary. In transparent bridge or policy-routing mode, the side-router remains closer to the existing subnet and intercepts traffic according to firewall rules. Bridge-style deployments can preserve local discovery more naturally, but they usually require more advanced network knowledge and careful testing.
Keep the ISP modem and main router unchanged. Connect the side-router's WAN port to a LAN port on the main router, create a separate LAN subnet on the side-router, and connect only test devices first. Once routing, DNS, printers, and local services work as expected, move additional devices to the side-router or assign them to a dedicated SSID.
Avoid Accidental Double NAT
Double NAT is not always fatal, but it can complicate port forwarding, multiplayer games, remote access, and device discovery. If the side-router is used as a full gateway, document the two subnets and keep port-forwarding requirements in mind. Do not switch both routers into random bridge modes without first recording the current configuration.
2Hands-On Setup: LAN Access, DNS, and Policy Rules
This section describes a general setup sequence for a Mihomo-compatible router or side-router. Interface names vary between firmware and clients, so treat the examples as a configuration model rather than a promise that every field will appear in the same location. The same logic can also be applied when a desktop Clash client exposes a LAN proxy port for other devices.
Step 1: Give the Clash Gateway a Stable Address
Assign the router or host running Clash a predictable address. For example, a side-router might use 192.168.50.1 on its LAN, while the main router uses 192.168.1.1. Reserve the address through DHCP or configure it explicitly outside the automatic address pool. A stable address makes it easier to set client gateways, open the management panel, and troubleshoot connectivity later.
Use a separate subnet for a gateway-mode side-router. This prevents clients from accidentally receiving DHCP information from the wrong router. A basic plan could look like this:
Step 2: Enable the LAN Proxy Port Carefully
Clash clients commonly expose separate ports for mixed traffic, HTTP, SOCKS, or a transparent redirect. A mixed port is convenient for manually configured applications, while a transparent gateway normally uses TUN or firewall redirection. If you expose a proxy port to the LAN, bind it to the LAN interface rather than to the loopback address only. At the same time, restrict access with firewall rules so that the port cannot be reached from the public internet.
The example above is intentionally conservative in scope. allow-lan: true permits other local devices to use the proxy, while bind-address: 0.0.0.0 listens on available interfaces. On a router, verify that the firewall permits port 7890 only from the trusted LAN. Never forward the mixed port or the external controller port to the WAN. If your client supports an explicit LAN access list, use it instead of allowing every interface.
Step 3: Configure DNS Before Testing Applications
DNS is one of the most common causes of confusing multi-device behavior. A phone may appear to use a proxy while still resolving domains through the main router. A smart TV may receive an address from a local DNS server, while a laptop uses encrypted DNS inside the browser. These differences can lead to inconsistent regional results, slow connections, or rules that match the wrong destination.
A typical Mihomo DNS design uses fake-IP mode for compatible clients, excludes sensitive local domains, and sends upstream queries through controlled resolvers. The exact nameserver list should reflect your privacy and reliability requirements:
Do not copy a DNS configuration blindly into a network containing printers, NAS devices, or custom internal domains. Local names must continue to resolve locally. If a device relies on multicast discovery, fake-IP behavior may also need an exception or a direct path. When a local hostname stops working, first check whether the hostname is being resolved by Clash at all, then inspect the fake-IP filter and local DNS forwarding rules.
Step 4: Build Rules Around Traffic Classes
Use rules that express your actual network goals instead of sending everything through a proxy. Local address ranges, private domains, and router management pages should normally remain direct. Streaming, software repositories, messaging platforms, or other services can then be assigned to a policy group according to your needs.
Rule order matters. A broad final rule such as MATCH,Proxy catches everything that was not matched earlier, so place local exceptions above it. If you use rule providers, verify that their rules do not override local services unexpectedly. Keep a small custom rule file for household exceptions, such as the NAS hostname, printer domain, game console update server, or an internal dashboard.
Testing Tip: Change One Variable at a Time
First test LAN reachability, then DNS resolution, then direct internet access, and finally proxied destinations. Changing TUN mode, DNS mode, firewall rules, and policy groups simultaneously makes failures difficult to isolate.
3Assign Devices, Protect Local Services, and Tune Performance
Once the gateway works, the next task is deciding which devices should use it. A single policy for the entire home is easy to manage, but it may be wasteful. A television might need a different route from a work laptop, and a game console may require low-latency direct traffic even when other devices use a remote node.
Use Separate Policy Groups
Create groups based on behavior rather than brand names. A useful arrangement might include DIRECT, Proxy Auto, Proxy Manual, and Reject. The automatic group can select a healthy node, while the manual group lets you pin a device to a region when a service requires it. Keep a direct option available in every group so that you can quickly compare a proxied route with the normal ISP path.
- Work devices: keep company domains, video meetings, and private VPN endpoints direct unless your organization requires another route.
- Streaming devices: use a dedicated policy group because regional services may require a stable exit location.
- Game consoles: prefer DIRECT for matchmaking and voice chat unless a specific service cannot be reached normally.
- Smart-home devices: keep local control traffic direct and avoid proxying firmware or cloud traffic without checking compatibility.
- Guest devices: place them on a separate SSID or VLAN with limited access to the management panel and private LAN services.
Preserve Local Discovery and Intranet Access
Proxying local traffic rarely provides a benefit. It can also break AirPlay, Chromecast, network printing, SMB shares, game-console discovery, and smart-home pairing. Add direct rules for private address ranges and ensure the firewall allows the required traffic between trusted LAN segments. If your network uses VLANs, permit only the specific discovery or service ports that are needed instead of opening every segment to every device.
Some discovery protocols depend on multicast or broadcast packets, which ordinary routed networks do not automatically pass between subnets. If a phone on the main router cannot see a speaker on the side-router, the problem may not be Clash at all. Check multicast forwarding, mDNS reflection, firewall zones, and whether both devices are intended to share the same trust boundary. In many homes, placing discovery-dependent devices on the same LAN is simpler than trying to bridge every protocol.
Measure Speed, Latency, and Stability
Test the network in layers. First, transfer a file between two local devices to establish local LAN performance. Next, test a normal direct website. Then compare a proxied destination using the same device and time period. Record download speed, upload speed, latency, packet loss, and whether the connection remains stable for several minutes. A proxy that produces a high peak speed but frequent reconnects may be less useful than a slower, consistent node.
Watch router CPU, memory, temperature, and connection count while several devices are active. DNS encryption, rule-provider updates, TUN processing, and UDP forwarding can all add overhead. If performance drops, try these changes in order:
- Remove unused rule providers and reduce the number of frequently refreshed lists.
- Disable IPv6 only if your upstream IPv6 path is incomplete or creates inconsistent routing; otherwise configure IPv6 deliberately.
- Compare TUN mode with a simpler gateway or redirection mode supported by your firmware.
- Move the Clash core to stronger hardware if the CPU remains saturated during ordinary traffic.
- Choose a closer, less congested node rather than forcing a distant high-bandwidth server.
Use rule mode, keep private networks DIRECT, enable DNS handling only where you understand the consequences, and maintain one tested fallback node. Avoid aggressive health-check intervals on limited hardware. A stable configuration that survives a router reboot is more valuable than a highly complex profile that requires manual repair every week.
4Troubleshooting and Long-Term Maintenance
When one device fails after a network change, begin by identifying which layer is broken. Confirm that the device received the expected IP address, gateway, and DNS server. Then check whether it can reach the router, the Clash mixed port, a local service, and a direct public address. Only after those checks should you investigate proxy nodes or remote service restrictions.
- No internet on any device: check the side-router WAN address, default route, upstream cable, and whether the main router still provides DHCP to the WAN interface.
- Internet works but proxy traffic does not: verify the selected policy group, proxy provider subscription, node health, and whether the LAN firewall allows the proxy port.
- Local NAS or printer disappears: inspect private-network DIRECT rules, DNS suffixes, multicast forwarding, and firewall isolation between Wi-Fi clients.
- Some apps work while others fail: compare DNS behavior, UDP support, IPv6 paths, and whether the application uses its own encrypted DNS or QUIC.
- Only one device has a problem: clear its DNS cache, renew its DHCP lease, disable a manually configured proxy, and check for a device-specific VPN or security application.
Back up the working configuration before changing subscriptions, firmware, or rule providers. Keep a short change log containing the date, changed fields, and observed result. This is especially important for family networks because problems may appear hours later when someone starts a video call or tries to print. Schedule rule-provider and subscription updates during a low-impact period, and avoid updating every component at once.
Protect the management interface as seriously as you protect the proxy port. Use a strong administrator password, limit the external controller to the trusted LAN, and do not expose it through port forwarding. If remote administration is necessary, use a secure private tunnel or an access-controlled management path. A reachable controller can reveal node information and may allow an attacker to alter routing for every device in the home.
Maintenance Checklist
Back up the profile, verify local services, test one direct destination and one proxied destination, review firewall exposure, and monitor resource usage after every significant update.
Frequently Asked Questions
Can I use Clash on the main router and a side-router at the same time?
Yes, but assign each device a clear role. Running two independent gateways with overlapping DHCP ranges can create unpredictable routes. A common arrangement is to keep the main router as the default gateway for ordinary household devices and use the side-router for a separate subnet or dedicated SSID. If both gateways run Clash, document which devices use each one and ensure their DNS settings do not point to the wrong controller.
Will every device automatically use the proxy when I enable LAN access?
No. Enabling LAN access only makes a proxy port reachable from other devices. A phone, browser, or television still needs either a manual proxy setting, a gateway redirection method, TUN support, or a router firewall rule that sends traffic to Clash. Gateway mode is usually the most transparent option, but it must be configured carefully so local traffic remains local.
Should I proxy all home traffic for consistent results?
Usually not. Local services, intranet destinations, video meetings, online games, banking services, and nearby content delivery networks may work better through DIRECT. Use rule-based routing and test exceptions individually. Full proxy mode can be useful for temporary troubleshooting, but it is not automatically the fastest or safest daily configuration.
Why does a smart TV or console behave differently from my laptop?
Many embedded devices have limited proxy controls, hard-coded DNS behavior, IPv6 support, or applications that use UDP and QUIC differently from a browser. They may also depend on multicast discovery. Give these devices a dedicated policy, inspect their DNS requests, and test direct routing before adding complex proxy rules. If transparent interception is unreliable, a device-specific manual proxy or a dedicated streaming subnet may be more predictable.
When designed with clear subnets, controlled DNS, explicit local exceptions, and conservative policy groups, Clash can become a practical home-network service rather than a tool limited to one computer. Start with a small test group, measure each change, and expand only after local access and fallback behavior are reliable.