Can only access a website by direct connection to router. Not through switch??

I don't know much about networking. In our workplace, we have to access a website where only users with registered IP addresses are able to login. We have 5 IP addresses that are registered. Since our modem has only 1 port configured by the ISP, we can only access the website one user at a time. So we used a switch in between and connected 5 pcs with the registered IP addresses. But the website does not allow us to login. It says "License key violation, domain not matched". Somehow it thinks we are not registered. I used the same IP address which I used while directly connecting to the modem. But no change. So why does it work while direct connection but not through switch? Is there something else we should be configuring?? 

TY.

Edit. FindmyIp website shows a different IP address. Not the one I set. How does that happen? But its not a problem while directly connecting to the modem

Edited by FrankRunnerDrebin, 14 May 2024 - 02:27 AM.

That is because you need a router for each of those IP's to allow more than 1 machine per each IP to be able to access. Otherwise you are stuck at only having five machines manually configured for each IP/

That is because you need a router for each of those IP's to allow more than 1 machine per each IP to be able to access. Otherwise you are stuck at only having five machines manually configured for each IP/

I have a modem that is configured by the ISP. It allows 5 IP addresses but unfortunately 1 port. I called them and they said use a switch to plug in 5 pcs. I have no problem doing that. I can access internet fine. But the problem is that the website I said can only be accessed by directly plugging a pc to that modem. I can't access that website when I use a switch in between even if I give the exact IP address, gateway, mask etc as I did while directly connecting the pc to the modem. Are you suggesting that I use another router? I don't know much about networking.

What router do you have?

I don't know, do you mean the company? The ISP set it up and configured it. They won't let us change it. Also I don't know much about networking

Take a photo of the ISP equipment, and its label.  If there are private info like phone number and password, you can mask it out.

If it is the website that has the issue and not how your end is configured, get with the website owner regarding the license problem.

Yes the model number

Like mine is a Verizon G3100.

It allows for more than 1 ip to be configured.

Its a TEJAS TJ2100N-11G. It does not have wifi support. I think ours is a customized one as it says in their web page.  Here: 

https://www.tejasnetworks.com/product/tj2100n-gpon-xgs-pon-ont.php

Its a TEJAS TJ2100N-11G. It does not have wifi support. I think ours is a customized one as it says in their web page.

https://www.tejasnetworks.com/product/tj2100n-gpon-xgs-pon-ont.php.

Take a photo of the ISP equipment, and its label.  If there are private info like phone number and password, you can mask it out.

There isn't. The ISP has set it that way. We can't configure it. They allotted us 5 IPs and it works fine if I use a switch to access the internet using 5 pcs. The problem is that the organization website lets us login while directly connecting to the modem, but when there is a switch in between, it says "license violation domain not valid". The IP is the same in both cases. We registered that IP in the website. Do websites know that we are accessing directly or through a switch?

Your manual is very lacking in information. Youll need to see if there is a way to configure the WAN port to use a CIDR Class to allocate your 5IP's.T

Youll need to let that site know your other IP's and that will fix it. Right now the only have 1 IP allowed.

Not that simple. The whomever that runs that website needs to fix the problem. My guess is that multiple people are accessing with the same credentials from multiple IP's, with the first user "owning" the license for the login.