Why ClashFX + NordVPN?
If you are looking for a modern proxy + VPN dual protection setup on macOS, ClashFX paired with NordVPN is one of the strongest combinations available today.
Over the past few years, the original ClashX has stopped receiving updates, and the ClashX Pro core has not kept pace with newer systems such as macOS 26. The community has largely moved toward the Clash Meta (mihomo) core, but Clash Meta is still heavily configuration-driven and can feel intimidating for everyday users. ClashFX was created to fill that gap. It adds a native macOS app interface, one-click TUN Enhanced Mode, a visual YAML editor, and subscription status display on top of the mihomo core, bringing advanced proxy power and a simple user experience together.
NordVPN handles the VPN layer with NordLynx, its WireGuard-based low-latency protocol, a global network of 6,000+ servers, and a no-logs policy that has been independently audited multiple times. Used together, NordVPN provides full-device base encryption, while ClashFX handles intelligent rule-based routing. The result is one of the cleanest and most efficient dual-layer setups for macOS users in 2026.
This guide covers:
- 5 unique advantages ClashFX has over Clash Meta and ClashX Pro, and why they matter when pairing with a VPN
- The complete setup flow from download and installation to first connection, usually under 5 minutes
- How to safely enable ClashFX TUN Enhanced Mode so all app traffic inside the NordVPN tunnel follows rule-based routing
- Real speed impact test data, so you know how much a VPN layer actually slows things down
- Troubleshooting tips and common mistakes to avoid
5 Unique ClashFX Advantages: Why It Works So Well with VPNs
ClashFX is not the only macOS app that can run mihomo, but in the specific VPN layering scenario, it has several advantages that are hard to replace.
1. One-Click TUN Enhanced Mode, Built on gVisor User-Space Networking
TUN mode is the key to making a proxy act globally. It creates a virtual network interface and captures TCP/UDP traffic, including apps that ignore the system proxy, such as Telegram P2P calls, Steam downloads, and many Electron apps. When used with a VPN, TUN is especially useful: the VPN handles outer-layer encryption, while TUN handles inner-layer rules, so no traffic is missed.
ClashFX TUN mode is implemented through mihomo and the gVisor user-space network stack. Compared with clients that rely on kernel-space TUN implementations, gVisor processes packets in user space, which means it is less likely to cause routing conflicts with NordVPN's utun interfaces and is safer if something crashes. Most importantly, it is a menu bar toggle. No manual config file editing is required.
2. Visual YAML Configuration Editor
When you need to add NordVPN process bypass rules to ClashFX or adjust DNS behavior, traditional Clash Meta users often have to hand-edit YAML in a text editor. One indentation mistake can break the whole config. ClashFX includes a YAML editor with syntax highlighting plus a form-based rule editor, so adding rules, switching nodes, and changing DNS settings can be done with clicks, with errors highlighted as you work.
This is especially helpful for VPN bypass rules. You can add PROCESS-NAME,NordVPN,DIRECT without digging through documentation, and the editor helps you complete it correctly.
3. Menu Bar Subscription Traffic and Expiry Display
Many users subscribe to NordVPN and also use a third-party proxy service as the source of their ClashFX proxy nodes. ClashFX reads the subscription-userinfo header returned by subscription URLs and shows traffic quota, usage, and expiry date directly in the menu bar. You do not need to log in to a provider dashboard just to check remaining data.
If you manage both a VPN subscription and a proxy service subscription, this small detail saves a lot of friction.
4. Fake-IP DNS Mode to Prevent DNS Leaks
If you use NordVPN for privacy, DNS leaks deserve attention. In some setups, traffic may pass through the VPN tunnel while DNS queries still go to your ISP resolver, revealing which websites you visit. ClashFX supports Fake-IP mode: domain lookups are handled locally with fake IPs, and real resolution is deferred until the proxy exit. This greatly reduces DNS leak risk.
Combined with NordVPN's own DNS leak protection, it gives you two layers of DNS protection.
5. Apple Silicon Native and Actively Updated
ClashFX is a Universal Binary and runs natively on M1/M2/M3/M4 chips, with no Rosetta translation overhead. That means the speed loss in a VPN layered setup comes almost entirely from the VPN layer, not from CPU overhead in the proxy client.
The other key advantage is active maintenance. ClashX Pro has not been updated for years and does not support macOS 26 well, while ClashFX v1.0.29 is actively maintained and keeps pace with the mihomo v1.19.x core. For a tool you rely on daily, that matters.
Download ClashFX v1.0.29
Built on mihomo core ยท Free and open source ยท macOS 12+
Free and open source ยท GitHub Releases ยท Actively updated
Why Pair It with NordVPN?
There are many VPN services, but pairing one with a low-latency, rule-driven proxy client like ClashFX sets a high bar. Any extra latency or speed loss from the VPN layer is amplified by the proxy layer. NordVPN offers the best balance across the factors that matter here.
NordLynx: A Low-Latency Match
NordVPN's NordLynx is a proprietary protocol built on WireGuard. WireGuard has only about 4,000 lines of code and is highly efficient, reducing extra latency by more than 40% compared with traditional OpenVPN on macOS. When NordLynx sits underneath ClashFX proxy traffic already handled by mihomo, the total speed loss can stay below 10%, as shown in the tests below.
6,000+ Servers with Dense Asia-Pacific Coverage
This matters especially for users in mainland China, Hong Kong, Taiwan, Macau, and Southeast Asia. NordVPN has dense NordLynx coverage in Singapore, Japan, South Korea, and Hong Kong. Choosing a nearby VPN node is the key to keeping VPN latency under 5ms.
No-Logs Policy Audited by PwC
This kind of trust signal is hard for smaller VPN providers to match. Even if a third party requested data, NordVPN would have nothing meaningful to provide because it does not keep activity logs. In a setup where you use both NordVPN and a third-party proxy service, this also helps ensure the VPN provider does not know which proxy nodes you connect to.
Threat Protection Complements ClashFX Rules
NordVPN Threat Protection blocks malicious domains and ad trackers at the VPN layer, while ClashFX rules handle precise proxy-layer routing and filtering. Together they create two layers of protection with broader coverage than either tool alone.
Recommended with NordVPN
Starting at about $3.39/month ยท 30-day money-back guarantee
Complete Setup Guide: Run ClashFX + NordVPN in 5 Minutes
The full flow has four steps: install ClashFX, install NordVPN, connect the VPN first, then start the ClashFX proxy. Follow this order to avoid routing conflicts.
Step 1: Download and Install ClashFX
- Visit the ClashFX official page or GitHub Releases to download the latest DMG, around 90 MB.
- Open the DMG and drag ClashFX into the Applications folder.
- On first launch, macOS may show a security warning. Follow the official installation guide to allow the app, or run this command in Terminal:
sudo xattr -rd com.apple.quarantine /Applications/ClashFX.app
- Launch ClashFX and install the system proxy helper when prompted. Enter your Mac login password.
ClashFX automatically reads your old configuration from ~/.config/clash/ on startup, including subscriptions, rules, and nodes. You do not need to re-enter anything. You can keep or remove the old ClashX app.
Step 2: Install and Configure NordVPN
- Visit the NordVPN website to create an account and choose a plan.
- Download the macOS client and sign in.
- Important setting: Go to NordVPN Settings โ Connection and set the protocol to NordLynx. It is often the default, but confirm it anyway.
- We also recommend enabling Threat Protection Lite, which blocks malicious domains at the VPN layer.
Step 3: Connect NordVPN First
- Choose a server close to your physical location. Users in Asia should choose Singapore, Japan, or Hong Kong nodes for the lowest latency.
- Click "Quick Connect" or select a server manually.
- Wait until the menu bar icon turns green and the status shows "Connected".
- Open whatismyip.com in your browser and confirm the IP address is now a NordVPN server IP.
Step 4: Start the ClashFX System Proxy
- With NordVPN already connected, open ClashFX.
- Click the ClashFX menu bar icon and select your proxy subscription profile.
- Enable Set as System Proxy.
- Choose Rule Mode so ClashFX routes traffic according to rules.
Your traffic path is now: Your device โ NordVPN encrypted tunnel โ ClashFX rule routing โ proxy node / direct connection. All traffic is encrypted by NordVPN first, then ClashFX decides whether each request should use a proxy or go direct.
1) Open a local site, such as Baidu if you are in mainland China. It should load normally and quickly, meaning ClashFX routed it directly.
2) Open a blocked site, such as google.com. If it loads, the proxy node is working.
3) Visit an IP checker. It should show the proxy node IP, not the NordVPN server IP, because that request uses the proxy route.
4) Visit dnsleaktest.com. DNS servers should belong to the proxy node or NordVPN, not your ISP.
Advanced: Enable ClashFX TUN Enhanced Mode
System Proxy Mode only handles apps that respect macOS proxy settings. Many apps, such as Telegram P2P, Steam, Discord voice, and command-line tools, bypass the system proxy and connect directly. That is when ClashFX TUN Enhanced Mode becomes useful.
When Do You Need TUN?
- You want Telegram, Discord, Steam, and similar apps to use the proxy too
- You need command-line tools, such as git, curl, and npm install, to use the proxy
- You need UDP traffic to pass through the proxy, since system proxy only covers TCP
- You want all network traffic to be captured by ClashFX rule routing with no gaps
How to Enable It
- Click the ClashFX menu bar icon and find Enhanced Mode.
- Enable it and enter your Mac login password to authorize.
- Wait a few seconds for the TUN virtual interface to be created.
Critical Config: Let NordVPN Processes Bypass ClashFX
Once TUN is enabled, all traffic passes through ClashFX, including the NordVPN client itself and the handshake traffic for the NordVPN tunnel. This can create a circular proxy loop and cause VPN disconnects. You must add bypass rules for NordVPN processes in your ClashFX config.
In the ClashFX menu bar, choose "Open Config Folder", edit config.yaml, and add this at the top of the rules: section:
# === ClashFX + NordVPN coexistence rules, place before all other rules === rules: # 1. NordVPN client and daemons: direct to avoid proxy loops - PROCESS-NAME,NordVPN,DIRECT - PROCESS-NAME,nordvpnd,DIRECT - PROCESS-NAME,NordVPN Helper,DIRECT - PROCESS-NAME,nordvpn-openvpn,DIRECT # 2. NordVPN server IP ranges: direct, so handshake traffic is not intercepted - IP-CIDR,103.231.88.0/22,DIRECT,no-resolve - IP-CIDR,103.255.232.0/22,DIRECT,no-resolve - IP-CIDR,146.70.0.0/16,DIRECT,no-resolve - IP-CIDR,194.110.13.0/24,DIRECT,no-resolve # 3. Local and private IP ranges: direct - IP-CIDR,127.0.0.0/8,DIRECT,no-resolve - IP-CIDR,10.0.0.0/8,DIRECT,no-resolve - IP-CIDR,172.16.0.0/12,DIRECT,no-resolve - IP-CIDR,192.168.0.0/16,DIRECT,no-resolve # 4. Keep the rest of your rules as usual, GeoIP CN direct, others proxy - GEOIP,CN,DIRECT - MATCH,Proxy
Save the file, then click "Reload Config" in the ClashFX menu bar. If you use the visual editor, adding these rules from the Rules tab is even easier.
Startup order matters: after each reboot, always connect NordVPN first, then enable ClashFX TUN mode. If you enable TUN before connecting the VPN, the TUN interface may intercept NordVPN handshake packets and prevent the VPN from connecting. If that happens, turn TUN off, connect the VPN, then enable TUN again.
Enable Fake-IP DNS Leak Prevention, Optional but Strongly Recommended
In the ClashFX DNS configuration editor, set Enhanced Mode โ fake-ip, then use:
dns:
enable: true
enhanced-mode: fake-ip
fake-ip-range: 198.18.0.1/16
fake-ip-filter:
- "*.lan"
- "*.local"
- "*.nordvpn.com" # Let NordVPN domains use real DNS
nameserver:
- https://1.1.1.1/dns-query
- https://dns.google/dns-query
This makes domain resolution local and fake-IP based, with real resolution deferred until traffic reaches the proxy exit. It greatly reduces DNS leak risk and complements NordVPN's own DNS protection.
Performance Tests: How Much Slower Is the Dual-Layer Setup?
This is the question most people care about. We tested on macOS 15.4 with an M3 Max device, a 500 Mbps base connection, a Tokyo IPLC proxy node, and a NordVPN Singapore NordLynx server.
Test Summary
- System Proxy Mode with NordVPN: about 8% speed loss and roughly 3-4ms extra latency. Daily browsing, 4K streaming, and Zoom calls feel normal.
- TUN mode with NordVPN: about 12% speed loss and roughly 5-6ms extra latency. It costs slightly more than System Proxy Mode, but captures all app traffic.
- If you switch NordVPN from NordLynx to OpenVPN-TCP, speed loss can jump to 25-35%. Stick with NordLynx.
Performance Optimization Tips
- Choose a nearby VPN server: select the NordVPN node closest to your physical location, keeping VPN-layer latency under 5ms.
- Use NordLynx: WireGuard-based protocols are much faster with proxy layering, often 3-5x faster than OpenVPN.
- Use high-quality IPLC or IEPL proxy lines: the proxy hop is often the bottleneck in the whole chain.
- Disable unused ClashFX rules: more rules mean more matching work. Remove RULE-SET entries you do not need.
- Enable Fake-IP: reduce DNS lookup latency and improve responsiveness.
Troubleshooting
Issue 1: NordVPN Disconnects After ClashFX TUN Is Enabled
Cause: NordVPN process bypass rules are missing, so TUN captures VPN handshake traffic.
Fix: Add PROCESS-NAME,NordVPN,DIRECT and related rules from the TUN configuration section above.
Issue 2: NordVPN Is Connected, but Some ClashFX Nodes Show Unavailable
Cause: After switching VPN exit countries, some proxy nodes may reject NordVPN exit IP ranges because of access controls.
Fix: Switch NordVPN to another location, such as Japan or Hong Kong, or ask your proxy service support whether VPN exit IPs are allowed.
Issue 3: Browser Works, but Telegram or Steam Does Not Use the Proxy
Cause: In System Proxy Mode, those apps bypass macOS proxy settings.
Fix: Enable ClashFX Enhanced Mode (TUN) so all traffic is captured.
Issue 4: DNS Leak Test Shows ISP DNS
Cause: Fake-IP mode is not enabled, or NordVPN DNS settings were overridden.
Fix: Follow the Fake-IP DNS section above to update ClashFX DNS settings. In NordVPN, also make sure "Use NordVPN DNS" is enabled.
Issue 5: Occasional Stutters on M3 or M4 Macs
Cause: You may be running the Intel build of ClashFX through Rosetta.
Fix: Right-click ClashFX.app โ Get Info โ uncheck "Open using Rosetta". Restart ClashFX afterward.
FAQ: Frequently Asked Questions
1. How is ClashFX different from Clash Meta and ClashX Pro?
ClashFX uses the actively maintained mihomo core, the same foundation as Clash Meta, but adds a native macOS app interface, one-click TUN Enhanced Mode, a visual YAML configuration editor, subscription traffic and expiry display, and a 5-language interface. Compared with Clash Meta, which is mostly command-line driven, ClashFX is easier to start using. Compared with ClashX Pro, which is no longer maintained, does not use mihomo, and is not compatible with macOS 26, ClashFX supports more protocols, more rule types, and ongoing updates. See the full ClashFX vs ClashX Pro comparison.
2. Can ClashFX TUN mode be used together with NordVPN?
Yes, but startup order and routing rules matter. We recommend connecting NordVPN first to create the outer encrypted tunnel, then launching ClashFX and enabling TUN Enhanced Mode. ClashFX TUN uses the gVisor user-space network stack, so it operates above the NordVPN tunnel and avoids low-level conflicts with NordVPN virtual interfaces. If you are not comfortable with routing rules, start with ClashFX System Proxy Mode together with NordVPN for a simpler and more stable setup.
3. Is ClashFX free? Do I need to pay for it?
ClashFX is free and open source. You can download it directly from GitHub. Core features such as System Proxy Mode, rule routing, TUN Enhanced Mode, YAML configuration editing, and the Yacd-meta dashboard are all free to use. NordVPN is a separate paid VPN service, and you can decide whether to use it.
4. Why recommend ClashFX instead of other clients with NordVPN?
There are three main reasons: 1) ClashFX TUN Enhanced Mode uses the gVisor user-space network stack, which is safer than kernel-space implementations and less likely to conflict with a VPN; 2) Fake-IP DNS mode helps prevent DNS leaks and preserves NordVPN's privacy benefits; 3) subscription status display lets you see proxy subscription traffic and expiry from the menu bar. ClashFX also runs natively on Apple Silicon, so the performance cost is almost zero on the client side.
5. How much speed do I lose when using ClashFX with NordVPN?
In our tests with NordLynx (WireGuard), the dual-layer setup reduced download speed by about 8-12% and added roughly 3-6ms of latency. That is barely noticeable in daily use. If you use OpenVPN instead, speed loss can rise to 25-35%. Set NordVPN to NordLynx for the best performance.
6. Can macOS 26, Sequoia, or Tahoe users run ClashFX?
Yes. ClashFX supports macOS 12 and newer, including macOS 13 Ventura, 14 Sonoma, 15 Sequoia, and 26 Tahoe. It also runs natively on Apple Silicon (M1/M2/M3/M4) and Intel chips. This makes it a better choice than ClashX Pro, which is no longer maintained and does not support macOS 26.
7. Can NordVPN .ovpn files be imported directly into ClashFX?
No. ClashFX uses the mihomo core and does not support OpenVPN, just like all Clash-based clients. A .ovpn file cannot be converted into Clash YAML. The correct approach is to use the official NordVPN client for the NordVPN connection, since it supports both OpenVPN and NordLynx natively, and use ClashFX for proxy subscription YAML configs. See Can .ovpn be converted to Clash YAML? for the full explanation.
8. Should I connect NordVPN first or start ClashFX first?
Always connect NordVPN first, then start ClashFX. This makes NordVPN the base encryption tunnel, so all traffic, including ClashFX proxy traffic, is encrypted by NordVPN first. If you enable ClashFX TUN mode before connecting NordVPN, TUN may intercept NordVPN handshake packets and prevent the VPN from connecting. Simple rule: the VPN is the foundation, ClashFX is the building. Lay the foundation first.