Home network security begins with robust access point security, and changing the default password is a critical first step. Many users neglect this step, leaving their router at factory defaults, leaving their data vulnerable to unauthorized access and traffic theft. Owners of a popular model D-Link DIR-620 Often, we need to update access keys after purchase or when we suspect an unauthorized connection.
The procedure for changing the encryption key on this device does not require in-depth knowledge of networking technologies, but it does have a number of nuances that depend on the firmware version and hardware revision of the router. Web configurator interface The appearance may vary depending on the year of the gadget's production, but the logic remains the same for all models. Properly setting up your wireless network ensures stable internet service and protection from unwanted intruders.
In this article, we'll walk you through each setup step in detail, paying special attention to potential access issues and compatibility issues between old and new encryption standards. You'll learn how to properly access the control panel, where to find the necessary fields, and which settings to configure for maximum security. Following these steps will allow you to quickly resolve the issue and forget about the risks associated with open Wi-Fi.
Preparing to change security settings
Before making any changes to your router's configuration, ensure a stable connection between your computer or smartphone and the device itself. It's best to configure it via a wired connection. Ethernet cableChanging wireless network settings may disconnect your current Wi-Fi connection, and you'll lose access to the router interface. If this isn't possible, make sure the signal strength is sufficient to load the configuration pages.
It's also important to know the current IP address of your gateway, which is used to log in to the administration system. By default, for most devices D-Link the address is used 192.168.0.1, however, it may have been changed by a previous user or provider. Check this information on the sticker located on the bottom of the router, where the default login and password are also listed.
⚠️ Important: If you change your wireless network settings while connected to Wi-Fi, be prepared for the connection to be disconnected immediately after saving the settings. You will need to reconnect to the network using the new password.
It's recommended to prepare a new, complex password in advance, consisting of mixed-case letters, numbers, and special characters. Using simple combinations, such as birthdates or sequences of numbers, will negate all security efforts. Write down the new access key in a safe place or use a password manager to avoid losing access to your network.
Logging into the router's web interface
To get started, open any modern web browser on the connected device. Enter the router's IP address in the address bar at the top of the window. Don't confuse this field with the search bar where you usually enter queries—the address should be entered in the URL bar. Once entered, press Enter.
The system will request authorization. In the window that opens, you will need to enter your credentials. The standard login for the equipment is D-Link most often is the word admin, written in lowercase letters. The password field on first login may be empty or also contain the word adminThis data is case sensitive, so please check your keyboard layout.
What to do if the default password doesn't work?
If the admin/admin combination doesn't work, the password may have been changed previously. In this case, a full factory reset of the router using the Reset button on the router will help.
If the login is successful, you'll see the main device status page or an advanced settings menu, depending on the firmware version. The interface may be blue, green, or gray, but the menu structure is generally the same. In some newer software versions, the first time you log in, you may be prompted to change the password specifically for accessing the router settings. This is a separate procedure from changing the Wi-Fi password, and it's also recommended.
Navigating the settings menu
After successful authorization, you'll be taken to the control panel. Depending on the firmware version, the interface may be presented in a classic style with tabs at the top or in a more modern version with a side menu. You need to find the section responsible for wireless connections. It's usually labeled as Wi-Fi, Wireless or Wireless network.
Within this section, you should look for a subsection related to security settings. It may be called Security, Security Or be combined with the main wireless settings. This is where the fields for selecting the encryption type and entering the access key are located. In older firmware versions, the settings may be scattered across different tabs, requiring careful consideration.
If you are using a dual-band device (although DIR-620 (Most often one-sided, depending on the revision), make sure you're editing the settings for the correct frequency. For this model, the 2.4 GHz standard settings are relevant. In some interface versions, security settings are located in a separate menu. Wi-Fi -> Security Settings.
Selecting the encryption type and setting a password
In the security section, the parameter that requires your attention is Network authentication or Network AuthenticationFor maximum compatibility and security, it is recommended to select the mode WPA2-PSK or mixed WPA/WPA2-PSKUsing an outdated protocol WEP It is strongly not recommended, as it can be hacked in a few minutes using special programs.
In the field marked as PSK encryption key, Pre-shared Key or simply Password, enter your chosen character combination. The password must be between 8 and 63 characters long. The system may hide the entered characters behind asterisks, so please enter your information carefully to avoid errors.
Pay attention to the field WPA encryption method. It's best to choose here. AES, as it is a more modern and reliable algorithm compared to TKIPSome older devices may not support AES, but by 2026, such devices will be critically few in number, and switching to AES will significantly improve channel security.
Save configuration and reboot
After entering all the required data, don't forget to apply the changes. In the interface D-Link the button is usually responsible for this Apply or Save/Apply, located at the bottom of the page. Clicking this button initiates the wireless module reconfiguration process, which takes a few seconds.
In some firmware versions, changes take effect only after rebooting the device. If, after clicking "Apply," you see a message indicating a restart is required, or the interface stops responding, reboot the router manually. This can be done through the web interface in the "Restart" section. System tools -> Reboot or physically, by briefly disconnecting the power supply.
☑️ Checklist after changing your password
It's important to understand that when the settings are applied, all devices connected via Wi-Fi will lose connection to the router. This is normal system behavior. You'll need to go to each device (smartphone, laptop, TV) and re-enter the new password in the wireless network settings.
Table of basic wireless network parameters
To make the technical information easier to understand, below is a table with recommended parameter values you'll encounter during setup. This information will help you navigate the vast array of options and select the right settings for your situation.
| Parameter | Recommended value | Description |
|---|---|---|
| SSID (Network Name) | Unique name (in Latin) | The name that appears when searching for networks |
| Network authentication | WPA2-PSK | Data Transmission Security Protocol |
| Encryption method | AES | Traffic coding algorithm |
| Encryption key | 8-63 characters | Password to connect to the network |
Using Latin characters for the network name (SSID) is recommended, as some older devices may display networks with Cyrillic names incorrectly or fail to recognize them. This isn't a strict requirement, but it avoids potential compatibility issues in the future.
Solving typical problems and errors
Users often encounter a situation where, after changing the password, the device cannot connect to the network, displaying an "Incorrect Password" error or endlessly attempting to obtain an IP address. In this case, the first step is to forget the network on the device (delete the connection profile) and recreate the connection from scratch.
Another common issue is the incompatibility of older devices with new security settings. If your ten-year-old laptop stops detecting the network after changing the password to WPA2-AES, try temporarily switching to mixed mode. WPA/WPA2 or even WPA-PSK (TKIP), although this will reduce the overall level of protection.
⚠️ Note: Interfaces and menu item names may vary slightly depending on the hardware revision (DIR-620/A, DIR-620/C1, DIR-620/NRU, etc.) and year of manufacture. Always consult the official documentation for your specific model.
If you forgot your new password immediately after installation and can't connect with any device, your only option is to reset it to factory settings. To do this, locate the hole on the router while it's turned on. Reset, press it with a paper clip and hold for about 10-15 seconds until the indicators flash simultaneously.
Why doesn't the router save settings?
A common cause is a failure during the flashing process or corrupted firmware files. Try resetting and setting up again. If the issue persists, your device's firmware may need to be updated.
Frequently Asked Questions (FAQ)
Is it possible to change the password on a D-Link DIR-620 via phone?
Yes, it's possible. You need to connect to the router's Wi-Fi network (or use mobile data if the router provides Wi-Fi but logs in using a local IP address), open a browser, and enter the address 192.168.0.1The interface adapts to a mobile screen, although using a mouse on a computer is more convenient.
What should I do if I forgot my router settings password (not my Wi-Fi password)?
If you changed the administrator password and forgot it, you can't restore it without losing your settings. You'll need to perform a hard reset (using the reset button on the router case). This will reset the router to the factory default login and password listed on the sticker, but all your personal settings will be deleted.
How often should I change my Wi-Fi password?
Security experts recommend changing access keys periodically, for example, every 3-6 months, or immediately if you suspect your password has become known to unauthorized persons. For a home network with a strong password (more than 12 complex characters), frequent changes are not critical.
Does changing your password affect your internet speed?
Changing the password itself doesn't affect speed. However, choosing the right encryption type (AES instead of TKIP) can positively impact wireless connection performance, as AES is less resource-intensive for the router's processor when encrypting the data stream.