Today, I encountered a strange redirection issue with CoreNetworkZ.com. The bare address was not opening or redirecting to the WWW version.

Initially, I suspected my Internet Service Provider, but their support team confirmed that everything was working fine on their end. My next step was to check the Blogger settings.

However, after conducting detailed research on popular webmaster forums, I found that the issue was not with Blogger’s custom domain name settings.

Two friends, Merin and Juble, reached out to me with the same issue regarding their websites. Surprisingly, both had registered their domain names through NameCheap.

Juble said, "Hello, Alex. I can't access my travel blog on any device. It's a WordPress blog that has been online for five years. Can you fix it?"

As a last resort, I contacted the Domain Registar live chat support.

I registered https://www.CoreNetworkZ.com with NameCheap, one of my preferred domain registrars.

While troubleshooting the issue with the support representative, she informed me that it was due to a DDoS attack against their default DNS server. She mentioned that it would take some time to resolve.

The support representative suggested I change the DNS server assigned to my web address to their backup DNS system.

Although switching to a backup DNS server might help mitigate the effects of the DDoS attack, it can take up to 24 hours for the changes to take effect.

For the latest updates on the DDoS attack affecting NameCheap’s DNS system, follow the link below:

I have checked the status of CoreNetworkZ using various online tools. See the screenshots below.

I have checked the WWW version of CoreNetworkZ.com. I uploaded the screenshot of the test result. There are no problems with the WWW version.

But the worst thing was just about to start. I received a warning in my Google Webmaster Tools account.

This warning message says, "Google bot cannot access your site. Over the last 24 hours, Google bot encountered 54 errors while attempting to retrieve DNS information for your site."

If you are a NameCheap customer having issues redirecting your naked domain address to the WWW version, follow the steps below to resolve the issue.

I explained why the domain from Namecheap was down. It was due to their faulty DNS.

Here, I will explain how to replace the current NameCheap DNS server with a better-performing one for your website. To update your domain name's DNS settings on NameCheap, follow these steps:

1. Log in to your NameCheap account using this link: https://www.namecheap.com.

2. Navigate to Manage Domains under My Account.

3. Under General on the left-hand side, click Switch to DNS System v1.

   Check the box for Transfer your domain to DNS System v1.

   

4. Click the 'Save Changes' button.

5. You will see a DNS status update message.

   

6. Ensure your domain name servers are updated.

   

Airtel provides a high-speed broadband connection for users with attractive plans. We have been using it for our office for the past two years without having any problems. They provide an almost steady connection by keeping the promised data transfer speed. Their unlimited packages come with a limited number of free calls and for some plans, they offer a free DSL wireless modem. D-Link DSL -2730U modem is installed by them in our office. This tutorial explains how to setup Airtel broadband modem with WiFi feature and share Internet connection and WiFi among multiple computers. Next portion of this tutorial covers how to make customizations for your connection in case of speed, security etc.

1. Connect LAN port of modem to the computer using an Ethernet cable
   
   
2. Type 192.168.1.1 on the address bar of the browser and press enter.
   
   
3. Enter the default login username and password for Airtel modem
   
   

   
   Username :  admin  
   Password  : admin
   
   

   
   
4. Click on Advanced Setup
   
   
   
5. Click Add button
   
   Now we can configure airtel DSL ATM Interface with right VPI and VCI values.
   
   
   Remove all previous configurations using the remove button before clicking the add button to set up a new one.
   
   
6. ATM PVC Configuration
   
   Now we are at the major step in configuring airtel broadband access. Enter the following values on this page.
   
   
   • VPI : 0
   
   
   
   • VCI : 35
   
   
   
   • Select EoA as DSL Link Type because we are configuring airtel modem in PPPoE
   
   
   
   • Select Default mode as the connection mode
   
   
   
   • Encapsulation Mode : LLC/SNAP-BRIDGING
   
   
   
   • service category : UBR Without PCR
   
   
   
   
   
   
   
   Choose strict priority for IP QoS Scheduler Algorithm. After entering all the details provided above, click the Apply button.
   
   
7. Reboot
   
   Once the configuration is completed, you should click on reboot link from the left-hand side menu under Management.
   
   
   Click reboot button.
   

Once the Internet connection is configured, we need to set up wireless and wireless security on Airtel modem. Follow the steps below to enable WiFi and security.

1. Log in to the setup page
   
   
2. Go to Wireless
   
   To enable WiFi, you must select "Enable Wireless" checkbox. You can create a custom name for Airtel WiFi network by deleting the current entry at SSID and type the name you want. It will be the name of the WiFi network.
   
   
   
   • Restrict Number of WiFi Clients using Max Clients entry
     
     
   • Make your Wireless network invisible by selecting Hide Access Point
     
     
   • Create Guest Accounts by enabling Guest Access Points
   
   Don't forget to save the changes using the Save button at the bottom of the page.
   
   
3. Enable Wireless Security
   
   
   1. Go to Security page under Wireless
      
      
      
   2. Select the Wireless profile from SSID
      
      
   3. Select Network Authentication
      
      You can choose open network (no security), WEP (less secure), WPA Personal and WPA Enterprise from Network Authentication. I am using WPA-Personal to secure office wireless network. Save the changes once it is completed.
      
      
   
   
4. MAC Filtering
   
   You can block a specific device from joining your Wireless network by banning the MAC address of that device. For that, you must enable MAC filtering.
   
   
   1. Go to MAC Filter under Wireless
      
      
      
   2. Select MAC Restrict Mode
      
      
      1. To disable a MAC address from joining your network, you may select Deny mode and enter it's MAC address
         
         
      2. If you want to allow selected devices only to join your network, you may choose to allow and enter the MAC address of the devices which are allowed to access your Wifi
   
   
5. Wireless Disconnection & Lower Data Transfer rate
   
   If you are facing troubles with Airtel mobile wireless network, you may follow the steps provided in the link below.
   Disconnection Issues With Wireless Connection
   

1. Change Modem Password
   
   
   1. Click on Management
      
      
   2. Click on Access Control
      
      
      
   3. Types Of Users
      
      Airtel supplied D-Link DSL-2730U model as the modem for my office. This device supports three types of users. They are
      
      
      1. admin: User with full privilege who can change any previous configurations made
         
         
      2. Support: This login id is provided to airtel technicians. Those authorized technicians will examine and run diagnosis test while your Internet connection experiences issues. This ID too can update device software along with admin id.
         
         
      3. User: Though user with this ID can view settings and update software, he cannot change any previous configurations.
      
      
   4. Change Default Password
      
      Type the username (from the three) and old password first and then type the new password. After confirming the new password, click the Apply button.
      
   
   
2. Change Local Network Settings
   
   The default login IP address of airtel modem is 192.168.1.1 but we can change it to a different one by following the procedure explained below.
   
   
   1. Click Advanced Setup
      
      
   2. Click on LAN
      
      Here we can change the default login IP of the device by changing the IP address specified at "IP Address". If you want to enable IGMP snooping, you must check the checkbox at "Enable IGMP Snooping". The same window gives options to either turn on or disables Firewall protection. If you don't want to share the Internet with multiple computers, simply select "Disable DHCP Server" radio button.
      
      
      After making necessary changes, don't forget to click the Save button at the bottom of the window.
      
   
   
3. Block Certain Websites
   
   By using the feature Parental Control, we can block any websites for users sharing broadband. This feature is configured on the MAC address of the browser's laptop. to set up this feature to block unwanted websites on Airtel broadband connection, follow the steps below.
   
   
   1. Click On Advanced Setup
      
      
   2. Click on Parental Control
      
      
      
   3. Click Add button
      
      Here you can enter the restrictions by following the Parental Control rules.
      
      
   
   
4. Firmware Upgrade
   
   It is necessary to update the current firmware of the Airtel modem with the latest release. To perform a firmware upgrade, follow the steps below.
   
   
   1. Download Firmware
      
      To download the latest firmware of any models of airtel modems, visit the link below. Save the downloaded file on your desktop. It is important to download the firmware for the right model.
      http://mywifi.airtelbroadband.in/airtelwifi/pages/html/firmware.html
      
      Right now they have listed firmware for Beetel Wi-Fi DSL CPE 450-TC1 and CPE 450-BX1 with Binatone Wi-Fi DSL CPE Model DT845W. If you cannot find firmware for your model, you may search vendor website.
      
      
   2. Login to Modem setup page
      
      
   3. Click on Management on the left side menu
      
      
   4. Click on Update Software
      
      
   5. Click on Choose file button to select the downloaded firmware
      
      
      
   6. Once the downloaded file is selected, click the "Update Software" button.
      
      
   7. Once the process is finished, the modem will restart. You need to wait at least one minute.

1. Test Download Speed
   
   If you doubt the actual speed of Airtel DSL connection, you can test it here. You may click the link below to test your current download and upload speed.
   http://www.airtel.in/speedcheck
   
   
2. Where to Pay bill
   
   You can pay airtel DSL broadband monthly bill online by following the link below.
   https://pay.airtel.com/online-payments/broadband-fixed-line-bill.jsp
   
   
3. Get extra Speed
   
   Airtel offers extra speed for their DSL users with extra payment. To learn more about it, visit the link below.
   http://www.airtel.in/broadband-vas/broadband-vas/speed_on_demand.html
   
   If you are not planning to pay extra for higher speed, I recommend you to follow the instructions provided in the link below.
   Increase Broadband Speed For Free
   
   
4. Register complaints
   
   If you are facing issues with Airtel DSL broadband connection, you may use the following information to reach their technical support division.
   
   
   • Customer Care Number: 121
     
     To get the exact broadband hub technical support number (for states and cities), visit the link below. Here you can find the technical department number exclusively for your state or city.
     http://www.airtel.in/TM_Dialling_No.xls
     
     
   • Airtel Customer care email address: 121@in.airtel.com
     
     
   • Get Bill Summary Information: 12113
     
     
   • Last three bill payment details: 12114
     
     
   • To get the current bill plan information: 12117
   
   
5. Internet Usage and Bill
   
   You can check your current Airtel DSL Internet usage and bill by login to your account by following the link below.
   https://www.airtel.in/myaccount