Asus RT-AX1800U User manual

User Guide
RT-AX1800URT-AX1800U
Wireless AX-1800 Dual Band WiFi 6Wireless AX-1800 Dual Band WiFi 6
RouterRouter

2
Copyright © 2022 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described
in it, may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language in any form or by any means, except
documentation kept by the purchaser for backup purposes, without the
express written permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired,
modied or altered, unless such repair, modication of alteration is authorized
in writing by ASUS; or (2) the serial number of the product is defaced or
missing.
ASUS PROVIDES THIS MANUAL “AS IS”WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS
AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR
PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE
FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE
AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A
COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY
FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL,
INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be
registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’benet, without intent
to infringe.
E19791
First Edition
January 2022

3
Table of contents
1 Getting to know your wireless router 6
1.1 Welcome! ........................................................................................6
1.2 Package contents.........................................................................6
1.3 Your wireless router.....................................................................7
1.4 Positioning your router..............................................................9
1.5 Setup Requirements ................................................................ 10
1.6 Router Setup............................................................................... 11
1.6.1 Wired connection..................................................................12
1.6.2 Wireless connection.............................................................13
2 Getting started 14
2.1 Logging into the Web GUI ..................................................... 14
2.2 Quick Internet Setup (QIS) with Auto-detection ........... 15
2.3 Connecting to your wireless network................................ 19
3 Conguring the General settings 20
3.1 Using the Network Map ......................................................... 20
3.1.1 Setting up the wireless security settings......................21
3.1.2 Managing your network clients.......................................22
3.2 Creating a Guest Network...................................................... 23
3.3 AiProtection ................................................................................ 25
3.3.1 Network Protection ..............................................................26
3.3.2 Setting up Parental Controls.............................................29
3.4 Using the Trac Manager ...................................................... 31
3.4.1 Managing QoS (Quality of Service) Bandwidth..........31
3.5 Trac Analyzer........................................................................... 34
4 Conguring the Advanced Settings 35
4.1 Wireless......................................................................................... 35
4.1.1 General......................................................................................35

4
Table of contents
4.1.2 WPS ............................................................................................38
4.1.3 WDS............................................................................................40
4.1.4 Wireless MAC Filter ...............................................................42
4.1.5 RADIUS Setting ......................................................................43
4.1.6 Professional.............................................................................44
4.2 LAN................................................................................................. 47
4.2.1 LAN IP ........................................................................................47
4.2.2 DHCP Server............................................................................48
4.2.3 Route .........................................................................................50
4.2.4 IPTV ............................................................................................51
4.3 WAN ............................................................................................... 52
4.3.1 Internet Connection.............................................................52
4.3.2 Port Trigger..............................................................................55
4.3.3 Virtual Server/Port Forwarding........................................57
4.3.4 DMZ............................................................................................60
4.3.5 DDNS .........................................................................................61
4.3.6 NAT Passthrough...................................................................62
4.4 IPv6................................................................................................. 63
4.5 Firewall.......................................................................................... 64
4.5.1 General......................................................................................64
4.5.2 URL Filter ..................................................................................64
4.5.3 Keyword lter .........................................................................65
4.5.4 Network Services Filter .......................................................66
4.6 Administration ........................................................................... 68
4.6.1 Operation Mode ....................................................................68
4.6.2 System.......................................................................................69
4.6.3 Firmware Upgrade................................................................70
4.6.4 Restore/Save/Upload Setting ...........................................70

5
Table of contents
4.7 System Log .................................................................................. 71
5 Utilities 72
5.1 Device Discovery....................................................................... 72
5.2 Firmware Restoration .............................................................. 73
6 Troubleshooting 75
6.1 Basic Troubleshooting............................................................. 75
6.2 Frequently Asked Questions (FAQs) .................................. 78
Appendices 87
Service and Support................................................................................ 95

6
1 Getting to know your wireless1 Getting to know your wireless
routerrouter
1.1 Welcome!
Thank you for purchasing an ASUS RT-AX1800U Wireless Router!
The ultra-thin and stylish RT-AX1800U features a 2.4GHz and 5GHz
dual bands for an unmatched concurrent wireless HD streaming
and the ASUS Green Network Technology, which provides up to
70% power-saving solution.
1.2 Package contents
RT-AX1800U Wireless Router Network cable (RJ-45)
Power adapter Quick Start Guide
NOTES:
• If any of the items are damaged or missing, contact ASUS for
technical inquiries and support. Refer to the ASUS Support Hotline
list at the back of this user manual.
• Keep the original packaging material in case you would need future
warranty services such as repair or replacement.

7
1.3 Your wireless router
Power LED
O: No power.
On: Device is ready.
Flashing slow: Rescue mode
LAN 1~3 LEDs
O: No power or no physical connection.
On: Has physical connection to a local area network (LAN).
WAN (Internet) LED
Red: No IP or no physical connection.
On: Has physical connection to a wide area network (WAN).
2.4GHz LED
O: No 2.4GHz signal.
On: Wireless system is ready.
Flashing:Transmitting or receiving data via wireless connection.
5GHz LED
O: No 5GHz signal.
On: Wireless system is ready.
Flashing:Transmitting or receiving data via wireless connection.
USB 2.0 LED
O: No power or no physical connection.
On: Has physical connection to USB devices.
Reset button
This button resets or restores the system to its factory default settings.
Power switch
Press this switch to power on or off the system.

8
Power (DCIN) port
Insert the bundled AC adapter into this port and connect your router to a power source.
WPS button
This button launches the WPS Wizard.
USB 2.0 port
Insert USB 2.0 compatible devices such as USB hard disks or USB ash drives
into this port.
WAN (Internet) port
Connect a network cable into this port to establish WAN connection.
LAN 1 ~ 3 ports
Connect network cables into these ports to establish LAN connection.
NOTES:
• Use only the adapter that came with your package. Using other
adapters may damage the device.
• Specications:
DC Power adapter DC Output: +12V with max 1.5A current
Operating Temperature 0~40oCStorage 0~70oC
Operating Humidity 50~90% Storage 20~90%

9
1.4 Positioning your router
For the best wireless signal transmission between the wireless
router and the network devices connected to it, ensure that you:
• Place the wireless router in a centralized area for a maximum
wireless coverage for the network devices.
• Keep the device away from metal obstructions and away from
direct sunlight.
• Keep the device away from 802.11g or 20MHz only Wi-Fi
devices, 2.4GHz computer peripherals, Bluetooth devices,
cordless phones, transformers, heavy-duty motors, fluorescent
lights, microwave ovens, refrigerators, and other industrial
equipment to prevent signal interference or loss.
• Always update to the latest firmware.Visit the ASUS website at
http://www.asus.com to get the latest firmware updates.
45° 45°

10
1.5 Setup Requirements
To set up your wireless network, you need a computer that meets
the following system requirements:
• Ethernet RJ-45 (LAN) port (10Base-T/100Base-TX/1000BaseTX)
• IEEE 802.11a/b/g/n/ac/ax wireless capability
• An installed TCP/IP service
• Web browser such as Internet Explorer, Firefox, Safari, or
Google Chrome
NOTES:
• If your computer does not have built-in wireless capabilities, you may
install an IEEE 802.11a/b/g/n/ac/ax WLAN adapter to your computer
to connect to the network.
• With its dual band technology, your wireless router supports 2.4GHz
and 5GHz wireless signals simultaneously. This allows you to do
Internet-related activities such as Internet surng or reading/writing
e-mail messages using the 2.4GHz band while simultaneously
streaming high-denition audio/video les such as movies or music
using the 5GHz band.
• Some IEEE 802.11n devices that you want to connect to your network
may or may not support 5GHz band. Refer to the device's manual for
specications.
• The Ethernet RJ-45 cables that will be used to connect the network
devices should not exceed 100 meters.