I can't access files on my computer that is connected to the ISP router/modem.

[heckdotcom]

Hello, I have a network of Google Wifi in my house. But my main desktop is connected by wire to my ISP router. I can't seem to access the files in my computer from any device while connected to the Google Wifi. How do I access these files from my Google network?

The network is set up like 

ISP	-------------------->	GOOGLE WIFIx3	-------------------->	Chromecast with Google TV and devices.
Desktop

[MichaelP · Accepted solution]

Hello @heckdotcom 

So, the primary Google WiFi unit (the one connected to your ISP router via an Ethernet cable) is also a router and firewall. This means it is creating a new "inner" network inside the "outer" network created by your ISP router. This blocks many kinds of traffic between the inner and outer networks. In particular, it blocks the protocols used for autodiscovery of things like file servers. You might still be able to access those files by using the IP address assigned to your desktop by the ISP router, but a more reliable method would be to connect your desktop to the same inner network as your wireless clients by plugging it in to the LAN Ethernet port on the Google WiFi primary unit. That way, they will all be able to see each other via autodiscovery and will be able to connect directly without going through that firewall. This would mean the Google WiFi primary will be the only device connected directly to your ISP router, and you desktop will be assigned a new IP address on that inner network.

[Jeff]

Hi, heckdotcom.
I just wanted to jump in real fast to see if you saw MichaelP's reply and to see if you still needed some help on this or if you were able to get it sorted out. If you are still needing some help, just let us know and we'll be happy to continue helping.
Thanks.

[Jeff]

Hey, heckdotcom.

I'm just following up once more to see if you still needed some help here. If there's more we can do, just let us know.

Thanks.

[Jeff]

Hi, everyone.
Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.
Thanks.

[Jeff]

Hi, everyone.
As we haven't had any activity here recently I'm going to go ahead and close the thread. If you have more to add, feel free to start a new discussion.
Thanks