Need help tunneling to a router through LAN

[Darth Beeius]

This is a university LAN infrastructure where there are separate switches for each block, which are then connected through the uni backbone to the internet and themselves. IPs are granted through a central DHCP server. What I want to do is I want to have a router on repeater mode which captures a off uni-internet wife and repeats it through its LAN ports (WDS?) So if I connect through the LAN ports on the router I can access this WiFi but what I want to achieve here is I want to connect to this router from another computer on the above mentioned university LAN infra. and use this other WiFi connection. I can ping this router from another computer on the network (obviously) 

Might not be relevant but on windows network tab where you can share files, only the computers connected to the immediate switch are being show

[Nas]

What is the router model? This can be easily done using DD-WRT.

[Darth Beeius]

Just now, Nas said:

What is the router model? This can be easily done using DD-WRT.

I have a DD-WRT flashable router, how do i proceed?

[Nas]

1 minute ago, Darth Beeius said:

I have a DD-WRT flashable router, how do i proceed?

OK, you need to download the DD-WRT file for your router from here: https://www.dd-wrt.com/site/support/router-database

After which you need to go to the router's IP adress on your network, sign into it, and update it from within the interface.

 

Once you install the DD-WRT firmware and set it up with a username and password, you can follow this guide here: https://www.dd-wrt.com/wiki/index.php/Repeater_Bridge to make it a repeater bridge. 

[Levisallanon]

15 hours ago, Nas said:

OK, you need to download the DD-WRT file for your router from here: https://www.dd-wrt.com/site/support/router-database

After which you need to go to the router's IP adress on your network, sign into it, and update it from within the interface.

 

Once you install the DD-WRT firmware and set it up with a username and password, you can follow this guide here: https://www.dd-wrt.com/wiki/index.php/Repeater_Bridge to make it a repeater bridge. 

I could be mistaking but this is not what the OP is looking for.
The OP has a setup like this:

WiFi Network -- Owned Router -- | University Network (unowned) | -- Owned router -- PC

And he want's to have communication between the PC and the WiFi Network.
@Darth Beeius is that right?

This would require a few things.
First of all both of your routers must have a fixed IP address in the university network.
Your univerity shouldn't have some firewall in place which blocks packets which are unknown to it.

 

If so you want to build a GRE tunnel between the two routers. You probably also want to enable a routing protocol (like OSPF) to advertise the routes in both networks (depending on the setup you might not need this).
I haven't working with dd-wrt but this tutorial seems to be what you need:
https://www.dd-wrt.com/wiki/index.php/EoIP_Routing

@Lurick any comments on this?

[Darth Beeius]

On 2/8/2018 at 8:36 PM, Levisallanon said:

I could be mistaking but this is not what the OP is looking for.
The OP has a setup like this:

WiFi Network -- Owned Router -- | University Network (unowned) | -- Owned router -- PC

And he want's to have communication between the PC and the WiFi Network.
@Darth Beeius is that right?

This would require a few things.
First of all both of your routers must have a fixed IP address in the university network.
Your univerity shouldn't have some firewall in place which blocks packets which are unknown to it.

 

If so you want to build a GRE tunnel between the two routers. You probably also want to enable a routing protocol (like OSPF) to advertise the routes in both networks (depending on the setup you might not need this).
I haven't working with dd-wrt but this tutorial seems to be what you need:
https://www.dd-wrt.com/wiki/index.php/EoIP_Routing

@Lurick any comments on this?

Exactly what I asked. University network is a DHCP server. Can I just set a static IP in my router? Wont DHCP force a new ip?

[Levisallanon]

1 hour ago, Darth Beeius said:

Exactly what I asked. University network is a DHCP server. Can I just set a static IP in my router? Wont DHCP force a new ip?

It's best to contact your university network administration. They can probably help you with a static IP.