Query: Use Adsl Modem As a Router - Help

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broadways

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I have an adsl modem cum router which has 4 lan ports and 1 wifi

Here's what I would like to do:

Cancel ADSL broadband and take cable broadband. The cable broadband comes with as a ready-to-use lan cable.

I would like to know if I can insert this lan cable in one of the four ports of the mentioned adsl modem and channel it to the modems wifi... so that I can surf on the laptop wifi.

Is this possible? Or is my adsl modem useless now?
 
Depends on the brand of modem/router.

You could potentially install OpenWRT on it, and then designate one of the LAN ports as a WAN port, etc, etc.

But with standard firmware, I'd be inclined to say "Not likely".
 
Thanks for the reply. I searched through the device GUI at length and there is nothing there that allows me to do what I want. I'm reluctant to buy a router because I just purchased a 3G modem before I stumbled on an el cheapo cable broadband provider. All these equipment upgradation requirements makes me feel like I'm being made a fool. Now there is talk about 4G spectrum allocation in my country. To me, it just means that we have to upgrade to yet another "superior", "fast" and "insert more attention grabbing semantics" equipment.
 
If you answered the original questions (brand of router), we could possibly assist you better.
 
It's a locally made modem.

http://www.semindia.in/pdf/dna-A211.pdf

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Slightly off topic, but who's your cable broadband provider? Didn't know those existed locally.
 
@efitol
@FlatspinZA
The pdf url gives out my location. The third picture has a "made in india" label.

I'm from india and my indian adsl broadband provider is BSNL. I'm aware that this is a SA forum but I had a technical question and a google search for keyword "adsl" led me to this forum.

@RoganDawes
Thanks for your effort. I have reservations against flashing the box.

I found a solution though. If I disable dhcp in the box then it works. I inserted the pipe in the lan1 port and I'm able to get the provider login page on my laptop wifi. I have the other system connected to lan2(wired).

However, there is a problem. Only one system can connect to the internet. If I login through wifi, the wired sys disconnects and vice versa. This is an authentication issue.

Besides, another issue has popped up. My MAC ID has been banned by the provider. My connection is port-binded on the old MAC ID(the pc).

Too much riff raff. I should have bought a second hand router from the street. They sell a used linksys wrt54g here for US $ 2.
 
broadways said:
@RoganDawes
Thanks for your effort. I have reservations against flashing the box.
Click to expand...

Fair enough, it's understandable.

broadways said:
I found a solution though. If I disable dhcp in the box then it works. I inserted the pipe in the lan1 port and I'm able to get the provider login page on my laptop wifi. I have the other system connected to lan2(wired).
Click to expand...

Doing this turns it into a plain switch, so you get the addresses directly from your cable provider.

broadways said:
However, there is a problem. Only one system can connect to the internet. If I login through wifi, the wired sys disconnects and vice versa. This is an authentication issue.
Click to expand...

Not an authentication issue, but a "number of visible systems" issue.

Since you turned it into a switch, there is no NAT anymore, and your cable provider will only allow a single system to be active at a time.

The NAT sets things up so that traffic from any machines behind the router appears to come from the router itself. With a switch, each machine is individually visible.

broadways said:
Besides, another issue has popped up. My MAC ID has been banned by the provider. My connection is port-binded on the old MAC ID(the pc).

Too much riff raff. I should have bought a second hand router from the street. They sell a used linksys wrt54g here for US $ 2.
Click to expand...

Yes, this would probably be your best approach.
 
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