Can only access a website by connecting to modem. But not through switch??

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FrankRunnerDrebin

New Member
In my office I have to login to a website where only registered IP address are able to login. I can only access the website through one ISP that provided us with a modem with only 1 working port. I registered 3 IP addresses that our ISP gave us (out of total 5). I can connect to the website and log in while directly connecting to the modem using any of the 3 IP addresses.. But now we have 2 extra users and so we set up a network switch, connected 3 PCs with those 3 IP addresses and connected that switch to the 1 working port of the modem. But it gives an error that says we have invalid license. It means the website thinks we have not registered our IP addresses. But I checked them using ipconfig and everything was the same as when I connected directly to the modem.
I can't post the IP addresses or the website link because of company policy. The website address gives you 404 error if we try to access it from unregistered IP addresses. But I get to see the website with the error message. It just says license error. That means I am missing something. How does the website know we are using a switch??
 
You have to have a router in place unless the modem from your provider is also a router. If you use a switch, only one person can be on at a time.
 
johnb35 said:
You have to have a router in place unless the modem from your provider is also a router. If you use a switch, only one person can be on at a time.
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We are able to access internet on 5pcs connected to the switch using the 5 ip addresses allotted to us by the ISP. But the website only recognizes us when we connect one pc to the one port of the modem.

beers said:
Why not use a router?

It's probably a MAC based limitation from the provider.
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You mean instead of the switch? We can access the internet using 5 pcs through the switch. The problem is the website somehow thinks we are unregistered when we use the switch.

Couriant said:
I assume you are on a business plan?

What switch are you using?
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Its actually a free service. The switch is Dlink dES 1016A
 
OK - For reference to those following, the D-Link DES-1016A is a 16 port 10/100 unmanaged switch.

The reason I asked if it's a business plan is that (from personal experience) when an ISP is providing more than 1 IP Address, then it would be a business plan that has a modem/router that has the configured IP range (example 10.1.2.3 - 10.1.2.7).

What modem do you have?

It sounds like a configuration issue and you should contact the ISP to make sure your setup is correct. Are you able to go to any other website like abc.com and only this 1 site is failing?
 
FrankRunnerDrebin said:
You mean instead of the switch? We can access the internet using 5 pcs through the switch. The problem is the website somehow thinks we are unregistered when we use the switch.
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Usually in addition to the switch, having individually exposed PCs means you have no internal network, doing a PAT behind a 'general internet' WAN address would resolve your addressing problem as all of the PCs could originate from the same address. You could also 1:1 NAT any individual services you need a unique address for.
 
Couriant said:
OK - For reference to those following, the D-Link DES-1016A is a 16 port 10/100 unmanaged switch.

The reason I asked if it's a business plan is that (from personal experience) when an ISP is providing more than 1 IP Address, then it would be a business plan that has a modem/router that has the configured IP range (example 10.1.2.3 - 10.1.2.7).

What modem do you have?

It sounds like a configuration issue and you should contact the ISP to make sure your setup is correct. Are you able to go to any other website like abc.com and only this 1 site is failing?
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I called the ISP and did exactly what they said. They gave me 5 IP addresses, subnet mask, gateway etc., I set them up in the control panel of the PC, and I am able to access the internet with these 5 addresses. Even with direct connection to the modem and through the switch. There is no problem from the ISP's end.

The modem is TEJAS TJ2100N-11G. I think its customized as it says in their webpage. No wifi.

Why is it happening only if I try a switch but not direct connection to their modem?
 
FrankRunnerDrebin said:
Okay, could you please provide a link on how to configure it?
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There are many routers so there is no possible way to know what one. But when you go through the set up, there will be a part where you can manually enter one of the IP addresses, Subnet Mask, default gateway, and DNS.

From the model of the modem, it looks like a fiber connection. So to confirm, this website you are referring to (that is hush hush), is that the ISPs site or a different site?

1716418516893.png

Which modem is it? If it is the one on the right, you should be using a router instead of a switch.
 
That is a good find. If it is that one, I wonder if "the site" is set to where if it's getting a lot of requests from one port, it's blocking it...

I find it weird that they are providing a modem that does not support the amount of IPs...

So I looked into the ONT since I haven't done a setup like this yet. All the information I have seen is that the box is like a modem but it is not. You would need to plug a router or computer to that box. So I think the switch is what causing the problem and you need to put a router in between the ONT box and router. If your router does not have enough ports, then you can connect the switch to the router to provide the extra ports.

So to confirm:

Get a router and connect it to the ONT box. Put one of the IP addresses into the WAN Port side of the router.
Connect the rest of the computers to the router and switch if needed.
Make sure ALL COMPUTERS are set to automatic IP/DHCP.
Then test.
 
johnb35 said:
that type
Click to expand...
It looks like the ISP can configure it a couple of different ways, given the 'enterprise and residential' indication in their text I'd expect someone with a /29 (five usable public addresses) to have them set just as a switch. OP could just tell us if they get a 192 or 172 or 10 address on the PC and you'd know immediately, I assume it's directly public and have a similar setup for my colo'd server.
 
At this point they need to seek out someone that deals with networking/fiber in their area/country, especially if their ISP is not helping (which is bad customer service in my opinion) because it just sounds like a CF of a setup
 
Couriant said:
At this point they need to seek out someone that deals with networking/fiber in their area/country, especially if their ISP is not helping (which is bad customer service in my opinion) because it just sounds like a CF of a setup
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Yes I've asked our HQ to send someone. Let them handle this.. TY
 
beers said:
It looks like the ISP can configure it a couple of different ways, given the 'enterprise and residential' indication in their text I'd expect someone with a /29 (five usable public addresses) to have them set just as a switch. OP could just tell us if they get a 192 or 172 or 10 address on the PC and you'd know immediately, I assume it's directly public and have a similar setup for my colo'd server.
Click to expand...
I've asked our HQ to send someone. We have an unused dlink r03. Would it work? Let them deal with this.
Thank you all.
 
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