ASUS DSL-N55U ver.D1 Router Firmware 1.1.2.3.224 Download

Posted at May 4, 2024 by PCI-DB Team

ASUS DSL-N55U ver.D1 Router Firmware 1.1.2.3.224 Description

New features:

- Support Dual WAN Failover Guest Network control feature(WAN > Dual WAN > Guest Network Terminate Switch).
- Now supports Access Log feature, display client info(IP, MAC, Hostname, Connection started/ finished time) with auto-backup to USB function.
- Support DOMAINS.GOOGLE.COM DDNS Service.
- Support URL Filter for Guest Network.
- Support allow specified IP address to access device, via SSH, Telnet or UI.

Security improvements:

- Prevent Brute Force/Dictionary attacks, now SSH/Telnet/UI would block attempted logins, 5 failed attempts leads to malicious access blocked for 5 minutes(LAN/WAN counter separated)/ with related syslog output.
- Check referrer of some web pages in GET command.
- Remove WLAN key in wps_info() for ensure security.
- Smartsync: Verifies the authenticity of the server's certificate.
- Smartsync: Set iptables rules only accept packages from local IP to smartsync port.
- Update SSH dropbear version to 2016.74/ integrate with Protection Server.
- SSH Authkeys length extended to 1023.

DSL:

- Modify QIS > UK ISP BT - Infinity 2 to BT - Infinity.

ADSL WAN (ATM) QIS manual setting list updated:

- Add Kuwait ISP Fasttelco
- Modify Russia Балашиха ISP Домолинк (0/35)
- Add Russia Балашиха ISP Домолинк(35/33)
- Add Spain ISP Ocean
- Add Turkey ISP Superonline
- Add Nepal NTC
- Add Germany ISP Deutsche Telekom (VLAN ID 7)

Bug fixes and Enhancements:

- Download Master updated: v3.1.0.101.
- Update AiCloud to v2.0.2.3/ fixed fail to get wan_ip in dual-wan mode.
- Fixed ATM default QoS bandwidth value display as NaN issue.
- OpenVPN Server: change to more secure default cipher setting.
- Fixed Guest Network > Access Intranet Disable, guest clients still could access AiCloud issue.
- Fixed possible USB Application page hang(stuck with upgrading) issue.
- Fixed USB disks mounted via hub, cannot add download task/ add the USB notify function to the programs when partitions are mounted/unmounted.
- Fixed possible no UI warning message when upgrade with invalid firmware issue.
- Fixed possible OpenVPN Server fails to work after system reboot issue.
- Fixed various UI related issues.
- Fixed NAS devices UPnP failed to work issue.
- Fixed Ethernet WAN connection problem with 802.1Q enabled.
- Remove option 42 in DHCP request option in non-default route WAN.
- Fixed kernel: ICV Error.
- Fixed OpenVPN Server cannot be used after system reboot.
- Fixed Samba related issue.
- OpenVPN Server support generate TLS 2048 bits certificate/key.
- Fixed WebHistory filter rule issue/ caused by ACCEPT from Network Services Filter(IP Filter) before Web History rule.
- Fixed setting such as static IP/http/https/both and port change leads to system hang(web server crash).
- Fixed some issues that may cause TigerVPN OpenVPN service fail to work.
- Fixed it is hard for client to connect to OpenVPN Server in Load Balance mode/ cannot connect to openvpn server on LAN side issues.
- Add "Auto select channel including channel 12, 13" checkbox for 2.4GHz auto channel selection.
- Fixed dnsmasq does not respond to the query from OpenVPN.
- Fixed LAN can't access Internet after terminating VPN client connection.
- Fixed tunnel 6in4 not work in bridge mode issue.
- Fixed various SmartSync/ ftpclient related issues.
- Fine tune SSH feature.

How to upgrade ASUS router or range extender firmware manually:

Step 1: Download the latest firmware for your device
Step 2: Find IP address of your device
Step 3: Upload the firmware onto your device
- After logging in your ASUS networking device, click the ‘Firmware Version’ number at the top of the page.
- Click ‘Choose File’ button on the Firmware Upgrade page.
- Select the unzipped firmware .trx file and click ‘Open’ button at the bottom right corner.
- Check the file you selected is the correct one. Click ‘Upload’ at the bottom.
- Wait for 3 minutes until the firmware file is uploaded to your device.
- After the upgrade of the firmware is completed, press on/off button on your device to reboot it manually.
- Upon rebooting, log in your device again and check the firmware version to make sure the latest version has been successfully installed.

About Router Firmware:

Before you consider downloading this firmware, go to the system information page of the router and make sure that the currently installed version isn’t either newer or matching this release.

Due to the large variety of router models and different methods for upgrading the device, it is highly recommended that you read and, above all, understand the installation steps before you apply the new firmware, even if you are a power user.

In theory, these steps shouldn’t be much of a hassle for anyone, because manufacturers try to make them as easy as possible, even if they don’t always succeed. Basically, you must upload the new firmware to the router through its administration page and allow it to upgrade.

If you install a new version, you can expect increased security levels, different vulnerability issues to be resolved, improved overall performance and transfer speeds, enhanced compatibility with other devices, added support for newly developed technologies, as well as several other changes.

If you’re looking for certain safety measures, remember that it would be best if you perform the upload using an Ethernet cable rather than a wireless connection, which can be interrupted easily. Also, make sure you don’t power off the router or use its buttons during the installation, if you wish avoid any malfunctions.

If this firmware meets your current needs, get the desired version and apply it to your router unit; if not, check with our website as often as possible so that you don’t miss the update that will improve your device.

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.

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