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VPN Client can't access computers on connected Lan-to-Lan VPN

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VPN Client can't access computers on connected Lan-to-Lan VPN

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VPN Client can't access computers on connected Lan-to-Lan VPN
VPN Client can't access computers on connected Lan-to-Lan VPN
2014-11-30 05:41:53 - last edited 2021-08-21 04:41:05
Region : UnitedStates

Model : TL-ER6120

Hardware Version : V1

Firmware Version :

ISP :

I have a Lan-to-Lan VPN connection that works great when you're at either site of the two connected Lan's, I have an Client-to-Lan L2TP VPN setup to login from Home hoping to be about to access both sites by logging into the one VPN connection, however I'm only able to access the computer on that network that I'm logging into. With the Lan-to-Lan VPN setup shouldn't I be able to access computers across both Lan's?
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#1
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Re:VPN Client can't access computers on connected Lan-to-Lan VPN
2014-12-01 11:06:49 - last edited 2021-08-21 04:41:05
In general, if you are not getting your desired network access there is either a misconfiguration or hardware/software limitation on the router.
Please describe your network or provide a diagram.
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#2
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Re:VPN Client can't access computers on connected Lan-to-Lan VPN
2014-12-01 22:04:14 - last edited 2021-08-21 04:41:05
See diagram attached I need the home client pc to be able to access computers across the VPN to the 192.168.10.1 LAN.
Thanks for you're help
File:
lpg-network-2.jpgDownload
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#3
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Re:VPN Client can't access computers on connected Lan-to-Lan VPN
2014-12-02 11:51:33 - last edited 2021-08-21 04:41:05
You may not transverse the two networks in that manner. IPSec prevents this type of behavior. IPSec encrypts packets from LAN 192.168.12.0/24 and sends them to device with LAN 192.168.10.0/24 to be decrypted and vice versa.
You are connecting by way of a L2TP Server on the device with LAN 192.168.12.0/24 but you are not physically connected to the LAN ports and that is where the packets are expected to come from to be encrypted and sent to device with LAN192.168.10.0/24
Neither of the 2 TL-ER6120 routers acting as peers have policies in place to accomplish what you want.
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Re:VPN Client can't access computers on connected Lan-to-Lan VPN
2015-02-11 03:43:58 - last edited 2021-08-21 04:41:05

acalandi wrote

See diagram attached I need the home client pc to be able to access computers across the VPN to the 192.168.10.1 LAN.
Thanks for you're help


Acalandi, set the L2TP IP address pool to IPs from subnet 192.168.13.0/24 and modify the site-to-site IPSec policy subnet mask to 192.168.12.0/ 23 on both sides. Then the tunnel will accept packets from L2TP client send to remote branch site.
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#5
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Re:VPN Client can't access computers on connected Lan-to-Lan VPN
2021-12-14 17:07:25

Can anyone confirm that this definitely works?
It seems like a fudge, to pretend that the VPN pool is actually on the LAN, but I'd accept that and just document it to death in case of future equipment changes :-)

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