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Yes—you can use your own router with AT&T Fiber. The safest general setup is to keep the AT&T gateway connected to the ONT or fiber jack, connect your router to the gateway by Ethernet, and enable IP Passthrough. Your router then manages your home network while the AT&T gateway remains the fiber-facing service device.
Yes—you can use your own router with AT&T Fiber. For the safest and most broadly applicable setup, leave the AT&T gateway connected to the ONT or fiber jack, connect your router to an Ethernet port on the gateway, and configure IP Passthrough. Your router then handles your home network’s Wi-Fi, firewall, NAT, VPN, and port-forwarding, while the AT&T gateway remains the fiber-facing service device.
This is different from completely replacing or removing the AT&T gateway. AT&T’s documented consumer setup uses the gateway-assisted IP Passthrough or, on some older models, DMZ+ method. The exact menu names depend on the gateway model and its firmware.
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AT&T Fiber
↓
ONT or fiber jack
↓
AT&T gateway (BGW210, BGW320, Pace 5268, or another supplied model)
↓ Ethernet cable from a gateway LAN port
Your router's WAN/Internet port
↓
Your home devices and Wi-FiThere are three separate jobs in this arrangement:
- ONT or fiber jack: presents or terminates the optical service connection.
- AT&T gateway: remains connected to the fiber service and provides the settings page used to pass the public address downstream.
- Your router: becomes the router you use to manage your home LAN, wireless network, firewall, VPN, and port forwarding.
AT&T identifies the gateway as the device that connects the home to AT&T Internet or Fiber. On a BGW320, the red ONT port is the service-side connection; the yellow ports are Ethernet ports for connected devices. Do not assume that the fiber jack is an ordinary Ethernet wall outlet for a retail router. AT&T’s installation guidance shows the ONT or fiber jack feeding the AT&T gateway, not a general-purpose client router.
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See AT&T’s IP Passthrough guidance and its gateway documentation for model-specific information.
What you need
- An active AT&T Fiber service and the supplied AT&T gateway.
- A customer-owned router with a dedicated WAN or Internet port.
- One Ethernet cable from an AT&T gateway Ethernet/LAN port to your router’s WAN/Internet port.
- Your router’s WAN-interface MAC address. It is usually shown in the router’s administration page or printed on its label.
- A computer or phone connected to the AT&T gateway for the initial configuration.
You may also need a longer or replacement Cat6/Cat6a cable, a mesh node or access point for a large home, or a multi-gig Ethernet switch for additional wired devices. Those accessories solve coverage, cabling, or port-capacity problems; they do not replace the IP Passthrough configuration.
Before you begin: identify the gateway model
Look for the model number on the gateway’s label. Common AT&T gateway families include the BGW320, BGW210, Pace 5268, NVG599, and NVG589, although you may have another model. Do not apply BGW instructions to a Pace 5268 menu simply because the equipment performs a similar job.
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How to configure IP Passthrough on a BGW210 or BGW320
These are the gateway-side steps described by AT&T for the BGW210 and BGW320. Keep your personal router connected while configuring the gateway so its WAN MAC address can appear as a downstream device.
- Connect a computer or phone to the AT&T gateway by Ethernet or Wi-Fi.
- Open a browser and go to
http://192.168.1.254. - Select Firewall, then Advanced.
- Enter the gateway’s Device Access Code if prompted. This code is printed on the gateway sticker and is not necessarily the same as your Wi-Fi password.
- Follow AT&T’s instructions in the Firewall Advanced area to turn off the settings it specifies.
- Open IP Passthrough.
- Set Allocation Mode to Passthrough.
- Set Passthrough Mode to DHCPS-fixed.
- In Passthrough Fixed MAC address, select or enter the MAC address of your personal router’s WAN/Internet interface.
- Select Save, then choose Restart Now when prompted.
- If your router does not receive the new WAN assignment, reboot the router after the gateway restarts. In some cases, rebooting the relevant equipment is necessary to force a fresh IP assignment.
On your personal router, set the Internet/WAN connection to obtain its address automatically—usually labelled Automatic IP, DHCP, or Dynamic IP—unless your router manufacturer or AT&T account specifically requires another setting.
The MAC address matters. Selecting the router’s LAN MAC, Wi-Fi MAC, or a mesh satellite’s MAC instead of the router’s WAN MAC can leave the router without the expected public assignment.
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AT&T’s current procedure is documented in its IP Passthrough and DMZ+ support article. Because gateway firmware changes, treat the labels shown in your gateway as authoritative.
Pace 5268: use DMZ+
The Pace 5268 uses AT&T’s DMZ+ procedure rather than the BGW210/BGW320 IP Passthrough path. Do not copy the BGW instructions verbatim.
AT&T’s Pace procedure involves checking the gateway software version, locating the personal router under LAN IP Address Allocation, selecting the appropriate private or specific address assignment, identifying the device as the DMZ device, and configuring the firewall behavior through the Pace interface. The exact screen sequence depends on the software version.
The practical rule is simple: identify the Pace 5268, check its software version, and follow AT&T’s current Pace DMZ+ instructions. DMZ+ and IP Passthrough are different gateway-side names for related ways of handing the downstream router the Internet connection. Neither term means that the AT&T gateway has been removed or that the ONT can automatically be connected directly to a retail router.
What IP Passthrough actually does
IP Passthrough allows the AT&T gateway to assign or share its dynamic public WAN address with one selected downstream device. In this guide, that device is your personal router.
After the configuration succeeds, your personal router should be the place where you:
- create and manage the home Wi-Fi network;
- configure the LAN address range and DHCP;
- enable firewall and security controls;
- create port-forwarding rules;
- run VPN-server or VPN-client features, where supported;
- manage parental controls, access rules, guest networks, and other router features.
It is not a universal bridge mode in which unlimited devices independently receive public addresses. Only one downstream device is selected for passthrough. The gateway’s firewall protection is also removed or bypassed for that selected device, so your personal router must have its firewall and NAT enabled.
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Devices that remain connected directly to the AT&T gateway may not behave as though they are on your personal router’s LAN. AT&T warns that devices connected to the gateway may no longer share files with the passthrough device. For a clean design, connect your regular wired and wireless clients to your own router or its mesh/access-point system.
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Should you turn off the AT&T gateway’s Wi-Fi?
Usually, yes—after your personal router is working. Disabling the gateway’s Wi-Fi avoids two overlapping wireless networks and makes it clear which device controls your home Wi-Fi. The exact Wi-Fi control location varies by gateway model and firmware, so use the labels shown in your interface.
This is a topology recommendation, not a claim that every AT&T gateway exposes identical Wi-Fi controls. If you have AT&T TV, phone, or another bundled service, verify any service-specific requirements with AT&T before changing advanced firewall, Wi-Fi, or equipment settings.
Choosing your own router for AT&T Fiber
Choose based on the AT&T speed tier, wired-port speeds, wireless coverage, and the capabilities of your client devices—not simply the largest Wi-Fi number on the box. AT&T lists Fiber tiers through 5Gbps and notes that a 1Gbps Ethernet connection can deliver about 940Mbps in practical throughput because of framing overhead.
| AT&T Fiber service | Router features to prioritize | What can limit performance |
|---|---|---|
| Up to 1Gbps | A quality gigabit router; a 2.5Gbps WAN is useful for upgrades or local-network transfers. | A 1Gbps Ethernet port, Wi-Fi conditions, or a client device may cap a speed test around the gigabit class. |
| 2Gbps | At least a 2.5Gbps WAN port and, ideally, multi-gig LAN connectivity. | A 1Gbps WAN port or a 1Gbps wired client cannot use the full service rate. |
| 5Gbps | A WAN port capable of the intended rate, suitable CPU/NAT performance, and matching multi-gig LAN ports or switching. | The router, switch, cable, client NIC, or Wi-Fi client can become the bottleneck. |
AT&T’s performance information explains why advertised service speed and measured device speed can differ.
Is a Wi-Fi 7 router required?
No. Wi-Fi 7 is an upgrade option, not a requirement for using your own router with AT&T Fiber. A well-chosen Wi-Fi 6, Wi-Fi 6E, or ordinary multi-gig router may be the better value for a gigabit plan or for a home whose devices do not support Wi-Fi 7.
A Wi-Fi 7 router becomes more relevant when you have compatible clients, need newer wireless features, or want multi-gig WAN/LAN capacity. For example, current manufacturer specifications show the TP-Link Archer BE9300 with 2.5Gbps WAN and LAN capability, the Archer BE9700 with 10Gbps and 2.5Gbps WAN/LAN options, and the Deco WB9600 whole-home mesh system with a 2.5Gbps WAN/LAN port. These are examples of hardware fit, not AT&T certifications or universal recommendations. Check the current specifications before buying.
What to look for: choose a router with a WAN port faster than 1Gbps if you subscribe to a multi-gig AT&T Fiber plan, plus enough LAN capacity for your wired devices. Wi-Fi 7 is optional; the correct port speeds are not optional when they are needed to avoid a bottleneck.
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Do not buy a Wi-Fi 7 router on the assumption that it can connect directly to the AT&T fiber jack. The documented consumer workflow keeps the AT&T gateway in place and connects the personal router downstream through IP Passthrough.
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Large homes and many wired devices
- Large home: choose a mesh-capable router or use a separate wired access-point design. Mesh improves wireless coverage; it does not remove the need for IP Passthrough on the AT&T gateway.
- Many wired devices: add a 2.5Gbps or 10Gbps Ethernet switch, matching its uplink and client ports to the speeds you actually need.
- Weak signal in one room: improve access-point placement or add a compatible mesh node before assuming that a faster Internet tier will solve the problem.
Security, NAT, and port forwarding
In the recommended arrangement, the AT&T gateway remains upstream, but the selected personal router receives the public dynamic WAN address through passthrough. The personal router therefore becomes the important security boundary for your home.
- Keep the personal router’s firewall enabled.
- Keep its NAT enabled unless its manufacturer documents a specific alternative configuration.
- Apply firmware and security updates.
- Use a strong administrator password and disable remote administration unless you have a specific, secured reason to use it.
- Create port-forwarding rules on the personal router, not only on the AT&T gateway.
- Give the internal service a stable DHCP reservation or local address before forwarding a port.
- Expose only the service you need, and avoid forwarding administrative interfaces to the public Internet.
IP Passthrough can prevent the common double-NAT problem for the selected router, but it does not turn every device attached to the AT&T gateway into a member of your router’s LAN. For the least confusing setup, attach home devices behind your own router.
Troubleshooting
Your router has no Internet
- Verify that the cable runs from an AT&T gateway Ethernet/LAN port to your router’s WAN/Internet port—not to one of the router’s LAN ports.
- Confirm that the selected MAC address is the personal router’s WAN MAC, not its LAN, Wi-Fi, or mesh-satellite MAC.
- On a BGW210 or BGW320, verify Allocation Mode: Passthrough and Passthrough Mode: DHCPS-fixed.
- Save the gateway settings and restart it.
- Reboot the personal router so it requests a fresh WAN lease.
- Check the router’s status page. It should show a WAN assignment; a private address may indicate that passthrough was not applied as expected.
- Verify that the personal router’s firewall and NAT are enabled.
Internet works, but speeds are lower than expected
- Test first with a wired computer.
- Check the negotiated link speed of the router’s WAN port and the test computer’s Ethernet adapter.
- Confirm that a 2.5Gbps-or-faster router port is being used for a multi-gig plan.
- Check the Ethernet cable and replace a damaged or unsuitable cable.
- Remember that Wi-Fi client capability, distance, interference, radio conditions, and the test device can all reduce measured speed.
A 1Gbps port cannot deliver the full practical capacity of a multi-gig service. Conversely, buying a faster router will not make a 1Gbps client or weak wireless connection operate at multi-gig speeds.
Port forwarding or remote access does not work
- Create the forwarding rule on your personal router.
- Confirm that the personal router is the selected passthrough or DMZ+ device.
- Give the target device a stable local address.
- Check that the service is listening on the expected port and that the personal router firewall permits it.
- Remember that the public address is dynamic unless your service arrangement provides otherwise; use an appropriate dynamic-DNS solution if needed.
- Do not expose unnecessary services to the Internet.
Devices cannot see one another
Devices connected directly to the AT&T gateway may not share files or discover services with devices behind the passthrough router. Move the affected devices behind your personal router, or use a properly configured access-point/mesh arrangement if you need one common local network.
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The Internet setup described here does not establish one universal configuration for every AT&T TV, phone, bundled-service arrangement, gateway firmware version, or account type. Before disabling gateway Wi-Fi or changing advanced firewall settings, check AT&T’s current instructions for your services. If the gateway is used by voice or television equipment, avoid moving or disconnecting that equipment until you have confirmed the requirements.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Bottom line
For most AT&T Fiber customers, the practical way to use a personal router is:
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- Keep the ONT or fiber jack connected to the AT&T gateway.
- Run Ethernet from a gateway LAN port to your router’s WAN/Internet port.
- Configure IP Passthrough on a BGW210/BGW320, or DMZ+ on a Pace 5268.
- Select your router’s WAN MAC address, restart the equipment, and verify its WAN assignment.
- Use your own router for Wi-Fi, firewall, NAT, VPN, and port forwarding.
- Choose WAN/LAN port speeds that match your AT&T Fiber tier; Wi-Fi 7 is optional.
This preserves the AT&T gateway’s fiber-facing role while giving you control over the network inside your home.
Frequently Asked Questions
Can I connect my own router directly to the AT&T fiber jack?
Usually, no. The recommended AT&T-supported consumer arrangement keeps the gateway between the ONT or fiber jack and your router. Connect your router downstream and configure IP Passthrough. A direct fiber-jack connection depends on the specific service architecture and equipment and should not be assumed to work.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesDo I need a Wi-Fi 7 router for AT&T Fiber?
No. Wi-Fi 7 is optional. For up to 1Gbps service, a quality gigabit or multi-gig router may be sufficient. Wi-Fi 7 is more useful when you have compatible devices or need newer multi-gig WAN/LAN capabilities.
Should I turn off the AT&T gateway’s Wi-Fi?
After your personal router is working, disabling the gateway’s Wi-Fi usually avoids overlapping wireless networks. The exact control varies by gateway model and firmware. If you have AT&T TV, phone, or another bundled service, confirm the requirements first.
Where should I configure port forwarding?
Create the port-forwarding rule on the personal router, since IP Passthrough makes it the primary router and security boundary for the home network. Give the target device a stable local address and avoid exposing unnecessary services.
Will IP Passthrough work with AT&T TV or phone service?
The general Internet workflow is covered here, but AT&T does not use one universal setup for every bundled-service arrangement. Verify current service-specific requirements before changing advanced gateway settings or moving equipment used by TV or phone services.
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The Bottom Line
Keep the AT&T gateway in place, connect your router by Ethernet, and use IP Passthrough—or DMZ+ on a Pace 5268—to make your router the home’s primary network device. Match its WAN and LAN speeds to your Fiber tier, keep its firewall enabled, and verify bundled-service requirements before changing gateway settings.
