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Accessing files on an LAN connected computer through a wifi router connected to the same LAN

Last response: in Networking
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March 22, 2014 10:34:56 AM

Hello,

I'm a little new to networking, I only started reading up on it a week ago, so I'm not 100% sure if what I want to do is achievable. I think it is but I can't get it to work and I want to make sure I haven't missed something obvious.

In my office we have our network supplied to us by the landlords and they charge us per IP address/connection whether they're in use or not. Occasionally we have freelancers come in who need internet access and to have addition IP address/connections for them is not cost effective as they'd often go unused. To solve this we bought a wireless router, configured it to run as a DHCP server and plugged it into a single connection from our main LAN.

This works great and people using our wifi can access the internet.

What the wifi users also occasionally need is access to the files on our 'server' and our networked printer. Our server is a desktop machine with shared folders connected to the main LAN. The printer is connected through a LAN switch to the main LAN.

The big question... Is it possible to map the server and printer to wifi connected clients?

The server's IP on the LAN is 172.28.124.23
The wifi router's IP on the LAN is 172.28.124.27
These are both static.

The router is running the usual 192.168.1.X subnet with mask 255.255.255.0.

My understanding was that if when mapping a folder if I point to the server's IP I should be able to find the shared folders on the server, but I can't seem to get a connection outside of the router's subnet.

Is there some configuring to be done elsewhere (on the server maybe) that I haven't done?

Thanks in advance,
Dan
March 23, 2014 5:52:34 PM

A little more info would be helpful. What WiFi router did you put in? Do your landlords charge you for every IP on your main LAN? What it sounds like is happening is maybe your WiFi router has a WAN connection and maybe like 4 LAN connections. Maybe you plugged your new Wifi router into your main network using the WAN port on the new router. If so then it has a built in firewall that will block you from getting to those other resources. Depending on what router you have we may be able to fix this with just a setting change.
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March 25, 2014 9:50:47 AM

Thank you for your reply

abailey said:
A little more info would be helpful. What WiFi router did you put in?
We put in a Netgear N300 WNR2200 wireless router

Do your landlords charge you for every IP on your main LAN?
We have been allocated the entire 172.28.124.X subnet if we need it for network devices. However for each IP we use we must pay a charge.

What it sounds like is happening is maybe your WiFi router has a WAN connection and maybe like 4 LAN connections. Maybe you plugged your new Wifi router into your main network using the WAN port on the new router.
Yes, that is exactly what the router has. Yes, we plugged the main network into the WAN port. I tried the LAN ports but this stopped wifi devices from connecting. I did not try connecting any devices to the other LAN ports.

If so then it has a built in firewall that will block you from getting to those other resources. Depending on what router you have we may be able to fix this with just a setting change.
This would be good.


Some other information I have just discovered
    1. Our machines receive their connection to the main LAN from our desk phones via Ethernet cable. The router is not. It is connected directly to the main LAN.
    2. Our desk phones are on a different subnet (172.31.220.X)
    3. We have an 8-port Sitecom network switch connected to the main LAN via its uplink port and through one of the desk phones.
    4. Connected to this switch is our office printer which is accessible through our main LAN and works fine, albeit slowly.
    5. The printer has an IP address of 192.168.1.30


I was wondering if there was some kind of NAT routing option we could explore?
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