[strongSwan] Is it possible to access a VPN Tunnel behind a VPN Gateway

[guega at guega.de]

This is the requested scenario:

There is a SITE-TO-SITE VPN connection between 192.168.10.0/24 network
and a destination network 192.168.20.0/24.*
Client 192.168.10.1 can ping server 192.168.20.1 in the 192.168.20.0/24
network*

The remote *192.168.20.0/24* network has a working SITE-TO-SITE VPN
connection with the network *192.168.30.0/24.**
Users in the 192.168.20.0/24 network can ping Server 192.168.30.1 in the
192.168.30.0/24 network.*

Is there a possibility to let client 192.168.10.1 ping server
192.168.30.1 in the 192.168.30.0/24 network?
How do I even route the traffic for 192.168.30.0/24 through the tunnel
to the 192.168.20.0/24 network.

Sadly a direct VPN connection between 192.168.10.0/24 and
192.168.30.0/24 is not an option due to some business related reasons.
"Ping" stands for Client/Server Communication.

Any advise would be very welcome.


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