OpenVPN connection, the opposite

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whitetiger-it
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OpenVPN connection, the opposite

Post by whitetiger-it » Wed Sep 28, 2022 6:48 pm

I need some advice for this type of use.

Usually the PC named A activates a connection with the OpenVPN server named B, then through the VPN, the PC A is able to connect to the PC named C.

I need to do the opposite.
PC A connects to server B, but once the VPN is active, PC C will be able to connect to PC A.

I can't figure out how to make this connection and how to set up the network.

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Pippin
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Re: OpenVPN connection, the opposite

Post by Pippin » Wed Sep 28, 2022 7:07 pm

Hi,

Try to describe the setup more accurately, network wise.
Is PC C behind the OpenVPN server?

If I understand your question correctly start reading here first:
https://community.openvpn.net/openvpn/w ... rversubnet
I gloomily came to the ironic conclusion that if you take a highly intelligent person and give them the best possible, elite education, then you will most likely wind up with an academic who is completely impervious to reality.
Halton Arp

whitetiger-it
OpenVpn Newbie
Posts: 2
Joined: Wed Sep 28, 2022 6:41 pm

Re: OpenVPN connection, the opposite

Post by whitetiger-it » Thu Sep 29, 2022 10:40 am

Pippin wrote:
Wed Sep 28, 2022 7:07 pm
Try to describe the setup more accurately, network wise.
Is PC C behind the OpenVPN server?
Now I read your link.

About the network.

Code: Select all

   PC_C ------------------- Server_B  - - - - - - - - VPN - - - - - - - - PC_A
192.168.100.50           192.168.100.11       Tunnel 10.1.1.0        192.168.200.100 (its IP in its Network)
             Remote LAN                                              192.168.100.100 (Its IP in Remote Network)
PC_A calls Server_B to start the VPN
With the VPN started, PC_C connects to PC_A

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Pippin
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Re: OpenVPN connection, the opposite

Post by Pippin » Thu Sep 29, 2022 1:13 pm

192.168.100.100 (Its IP in Remote Network)
Looks like you want tap (layer 2).
Do you really need that or would tun (layer 3) suffice?
Normally it is advised against so I never bothered looking into it.

If you really need layer 3 someone will probably chime in as I cannot help you with that.

If you already have a working setup then post some info on that:
viewtopic.php?t=22603
I gloomily came to the ironic conclusion that if you take a highly intelligent person and give them the best possible, elite education, then you will most likely wind up with an academic who is completely impervious to reality.
Halton Arp

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