Hi!
I have RUT950 (legacy-design). Firmware version 06.05.1.
There is an IPsec tunnel installed with Zyxel USG-50.
LAN RUT950 192.168.30.0/24
LAN USG-50 192.168.27.0/24
With an IPsec tunnel installed, there is full access between LAN networks.
An external user is connected to the Zyxel USG-50 via a mobile network via L2TP over IPsec.
An external user gets access to LAN 192.168.27.0/24 and has an internal address from subnet 192.168.110.0/24
A routing policy is configured on the USG-50, redirecting all packets from any networks to 192.168.30.0/24 in the IPsec tunnel between RUT950 and USG-50.
Thus, requests from an external user with addresses 192.168.110.0/24 to addresses 192.168.30.0/24 are routed to the tunnel.
But there is no response from RUT950, because packets from RUT950 go to the default gateway, not to the tunnel.
How to prescribe routing rules on RUT950 so that when a tunnel is installed
192.168.30.0/24 – 192.168.27.0/24
Packets coming from addresses 192.168.110.0/24 were routed to the installed IPsec tunnel back to USG-50?
Do I need to make additional rules in the firewall?
Firmware RUT950 06.05.1 – due to the fact that on later versions it is not possible to install an IPsec tunnel with USG-50.
Thanks.