Mining Chia cryptocurrency requires not only powerful drives, but also the correct network configuration. 8444, If you are using a Xiaomi router (Mi Router series) 4A/4C/AX3600/AX6000 And others, standard firewall settings can block incoming connections, leading to synchronization problems or reduced efficiency of pharming. In this article, we will discuss how to properly configure port airflow, avoiding typical errors.
It’s important to understand that simply turning on UPnP (Universal Plug and Play) doesn’t always solve the problem, and many users find that port 8444 remains closed even after activating this feature. The reason is because of the MiWiFi firmware, which by default limits some types of traffic, and we're going to look at two reliable ways: manual port rollover and setup. DMZ (The demilitarized zone, and why the static zone IP-Address for your device is a prerequisite.
Why Port 8444 is Important to Chia and How to Check Its Status
Port 8444 on the Chia network is used to:
- 🔄 Block exchange between nodes (chain synchronization).
- 🤝 Connect to peers (other nodes) to confirm transactions.
- 📊 Optimizing Pharming – A closed port can reduce the chances of winning a reward.
To make sure that the port is closed, use one of the following services:
- 🌐 CanYouSeeMe – Enter 8444 and check the status.
- 🔍 YouGetSignal – an alternative tool with detailed diagnostics.
If the service shows that the port is closed, start setting up the router.
⚠️ Warning: Before changing the router settings, turn off VPN or a proxy on a Chia node device, which can distort the results of port verification.
Preparation: We appoint a static IP-address
No fixed one. IP-The port forwarding address will not work smoothly. IP, grantable DHCP, It might change after you restart the router, and all the settings will reset:
1. Connect to the router’s web interface by entering 192.168.31.1 (or miwifi.com for new models) in your browser.
2. Go to Settings → Local area network → DHCP.
3. Find your computer or server with a Chia node in the list of devices (orientate yourself to the MAC-host-name).
4.Click Reserve or Bind IP (depending on the firmware version).
If your router does not support reservations via the web interface, assign a static IP manually on the device itself:
- 🖥️ Windows: Control Panel → Network and Internet → Network control centre → Change of adapter parameters → Properties IPv4.
- 🐧 Linux: edit the file /etc/network/interfaces Or use netplan.
⚠️ Attention: Choose IP-ipsod DHCP (For example, if the router distributes addresses from 192.168.31.100 to 192.168.31.200, assign 192.168.31.99 or 192.168.31.201).
☑️ Preparations for port port port overflow
Method 1: Manual port 8444 on the router Xiaomi
This is the most reliable method that works on all Xiaomi routers.
1. Open the router web interface (192.168.31.1) and log in.
2. Go to Settings → Additionally. → Port forwarding (port forwarding).
3. Click Add the rule and fill in the fields:
| Field. | Meaning | Explanation |
|---|---|---|
| Name of the rule | Chia_8444 | An arbitrary name for convenience. |
| Protocol | TCP/UDP or TCP | Chia's using it. TCP, But for reliability, you can choose both. |
| Outer port | 8444 | A port that will be open "outside." |
| Inland port | 8444 | Port on your device (should match the external one). |
| Internal IP | 192.168.31.X | Static IP your node-device. |
4. Save the rule and restart the router.
After restarting, check the port again with CanYouSeeMe. If the port is still closed:
- 🔄 Check that IP-The address of the device has not changed.
- 🛡️ Turn off the firewall temporarily on a node device (such as Windows Defender or ufw on Linux).
- 📡 Make sure your ISP does not block incoming connections (relevant for some Grey rates" IP).
💡
If you have a Mi Router 4A Gigabit Edition, the firmware may not have a Port forwarding section. Update the firmware to the latest version via Settings → Update of the PO.
Method 2: Use of the DMZ open all ports
If the handheld does not work, the alternative is to place the device in the DMZ (This will open all ports to the selected IP-address, but less secure than a specific port:
1. In the router's web interface, go to Settings → Additionally. → DMZ.
2. Enable the function DMZ and indicate static IP-address of your device.
3. Save settings and restart the router.
⚠️ Warning: DMZ Makes your device vulnerable to attacks from the Internet:
- 🔒 Your device is protected by a strong password and current OS updates.
- 🛡️ It has a firewall installed on it (for example, ufw on Linux or a third-party antivirus on Windows).
- 🌐 You are temporarily testing the setup and planning to return to the manual throw.
What to do if DMZ doesn't work?
UPnP: Why it doesn’t always work and how to set it up
UPnP (Universal Plug and Play) should theoretically open ports for applications automatically, but in practice it often crashes. In Xiaomi firmware, this feature may be limited by default.
To turn on UPnP:
1. Go to Settings. → Additionally. → UPnP.
2. Activate the switch and save the settings.
3.Reboot the router and the device with the Chia node.
If the port is still closed:
- 🔄 Check the logs of the Chia node for UPnP-related errors (e.g. UPnP port mapping failed).
- 📋 Manually add the port roll rule (as in Method 1), even if UPnP is enabled.
On Xiaomi routers with MiWiFi firmware R3P And then the new UPnP feature can block ports above 8,000 by default, and in this case, hand-over is the only solution.
Important issues: What to do if the port does not open
If you've done all the steps, but port 8444 remains closed, the ISP may be the problem.
- 🌍 "Grey" IP-address (CGNAT) — The provider does not give you a real external IP.
- 🔒 Port locking at the provider level (relevant for corporate tariffs).
- 📡 Double. NAT — If your router is connected to another router (for example, from a provider).
How to check:
1.Recognise your external IP-Address to WhatIsMyIP.
2. Compare it to the address that the router shows in the Status section → Internet.
3. If the addresses are different, you have CGNAT, It is impossible to open the port without contacting the provider.
Decisions:
- 📞 Ask the provider to give you white. IP (may require a change of tariff).
- 🔄 Use it. VPN Support for port port port transfer (for example, WireGuard in peer-to-peer mode).
- ☁️ Transfer the Chia node to the VPS (virtual server) with dedicated IP.
💡
If you CGNAT, The only reliable way to mine Chia is to rent VPS white IP or to negotiate with the provider for a change of tariff.
How to protect the node after opening the port
Open port 8444 makes your device potentially vulnerable to attack.
1. Update the software:
- 🖥️ Operating system (Windows, Linux).
- 🔄 Chia client up to the latest version.
- 🛡️ Router firmware (through Settings) → Update of the PO).
Set firewalls:
- 🔥 Windows: Allow port 8444 for chia.exe execution file only.
- 🐧 In Linux: Use ufw allow 8444/tcp Check the active rules with the ufw status team.
3. Restrict access:
- 🔑 Change the standard ports SSH (If you use it, disable remote access to the router.
- 📡 Set up. MAC-Filtering in the router (Settings section) → Wireless network → Filter MAC).
Monitoring:
- 📊 Check the logs of Chia nodes for suspicious connections (tail) -f ~/.chia/mainnet/log/debug.log).
- 🛡️ Install. Fail2Ban (Linux) to block suspicious IP.
⚠️ Note: If you mine on a device with important data (such as a home PC), consider taking the Chia node to a separate machine or virtual server.