Make a Computer As DMZ Host On BSNL Modem

If your computer is barred from accessing certain web applications due to NAT or Firewall restrictions, you can overcome it either by port forwarding or by converting your computer as DMZ host. DMZ stands for De-Militarized Zone and the PC assigned as DMZ host is out of modem/router firewall protection. BSNL modem has the feature to assign a device connected to it as DMZ host. For that, we must enter the IP address of the computer on BSNL modem to assign as De-Militarized Zone. Since BSNL modem treats the IP address as DMZ host, you must assign the same IP address as the static IP address of the device which you want to use as De-Militarized Zone. Procedure to place a PC in De-Militarized Zone for BSNL broadband modem is provided below.

Facing Slower Internet Speed ?

DMZ Host Configuration In BSNL Modem
  1. Login to Modem

    By default, the login IP address is 192.168.1.1 and admin is the default username and password.

  2. Click on Security tab


  3. Click on Virtual Server link

  4. Enter the static IP address you assigned to your PC as DMZ host address
    Use your computer as dmz host in bsnl Internet

You must enter the static IP address assigned to your computer as the De-Militarized Zone address in BSNL modem. Also make sure the static IP address you have assigned to your PC is not in the IP range of the DHCP server. For example if the DHCP range is 50 and the starting IP address is 192.168.1.2, it is safe to use an IP address from 192.168.1.52 onwards.

Benefits & Risks of Using a Computer As DMZ Host

If your computer is facing issues with accessing certain websites or playing online games when connected to BSNL modem in PPPoE mode, you can override the BSNL modem restrictions by converting your computer as DMZ host. Your PC is open to Internet without any protection or restrictions from modem firewall security when it is DMZ host. It risky to use a laptop in De-Militarized Zone because it is no longer protected from external threats unless your laptop has separate firewall protection. So it is not very recommended use a device as DMZ unless you are a hardcore gamer or planning to use your computer as web host. By installing a reputed firewall program on your computer, you can enable protection even if it is acting as in De-Militarized Zone.

Recommended Tutorials
  1. What is De-Militarized Zone and Its Use

  2. How to Assign Static IP Address From Command Prompt

  3. How to Configure Broadband On Teracom Modem in PPPoE Mode

  4. I Cannot Open Certain Websites Using BSNL Connection

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2 comments:

മഞ്ഞുതുള്ളി said...

This same procedure will works in all router network if you are going to do port forwarding you can access more that one device. It will works better than DMZ. Because if the router is publicly accessible after doing the DMZ you are only able to access your router from outside, so it's better you can go ahead with port forwarding.

Alex George said...

I agree with your comment about the superiority of Port forwarding over DMZ. However, in modern routers and modems, DMZ host receives different IP address (not in the range of private IP address provided to other devices from DHCP) and is treated as placed entirely outside the network. DMZ host has no connection with other devices connected to the modem. Accessing the router from DMZ is also prohibited.