Changing LAN private IP range via VPN connection?

[maxbraketorque]

I have a VPN tunnel setup between my cabin and my house with the router at my house acting as the client and the router at my cabin acting as the server. I would like to temporarily change the LAN IP subnet address (e.g., from 192.168.61.x to 192.168.1.x) on the cabin's router via my VPN connection. No problem getting to the router interface page to make the change, but I'm wondering if the cabin network will become inaccessible via VPN after I make the change. Anyone have any experience with this?

 

[L&LD]

The last time I tried something similar, the clients were still on the old subnet until their lease expired.

The VPN still worked for me, but that was a small solace.

 

[drabisan]

First and foremost: you shouldn't have any client with static ip.
Then, to reduce the downtime for clients you can reduce the lease lifetime to something like 600 seconds, wait 24h so all clients will have a short lease lifetime and then change the subnet.
Within 10 minutes you have all clients back on. And you can put back the default lifetime 86400.

 

[maxbraketorque]

Thanks. The issue was that a new IP cam was installed on the cabin network, and it has a default static IP that's on a different private subnet address range than what I use. If I had a computer physically connected to the cabin network, I could have connected to the camera using the camera configuration software. That software can't find the camera when using a computer on my home network. So my only choice to get control of the camera was to change to the cabin subnet via my VPN connection. I decided to try changing it via the VPN network, and I was able to reconnect to the new subnet, configure the camera, and then go back to my desired subnet address, so all good.

 

[bbunge]

You should be ok but I would use OpenVPN client on a PC. Not on your home router. The remote router VPN server likely uses a 10.x.x.x ip address that will not change when the router reboots after changing the lan ip. Or put the camera software on your home PC with openvpn client.

Sent from my SM-T380 using Tapatalk

 

[maxbraketorque]

You should be ok but I would use OpenVPN client on a PC. Not on your home router. The remote router VPN server likely uses a 10.x.x.x ip address that will not change when the router reboots after changing the lan ip. Or put the camera software on your home PC with openvpn client.

Sent from my SM-T380 using Tapatalk

Good idea on VPNing via a client computer. I'll do that next time.