Multiple subnets

[hillcz]

Hi all
Please I need help with server config
I have 3 routers as openvpn clients with 192.168.4.0/24 subnet on lan interface.
I need route trafic 192.168.4.0/24 from client1 with vpn ip 10.8.0.6 to router (10.8.0.2)
trafic 192.168.4.0/24 from client2 with vpn ip 10.8.0.7 to router (10.8.0.3)
and trafic 192.168.4.0/24 from client3 with vpn ip 10.8.0.8 to router (10.8.0.4)
Sorry my english is horryble
THX

[TinCanTech]

Do you mean all the subnets behind each of the routers s the same number .. 192.168.4.0/24 ?

[hillcz]

Yes all routers have same address range on lan.
I need route trafic from specific client to specific router.

[TinCanTech]

That is not how networks work and why the internet has almost run out of IPv4 address space.

[hillcz]

That is not how networks work and why the internet has almost run out of IPv4 address space.

And route source address 10.8.0.6 to gw 10.8.0.2
source address 10.8.0.7 to gw 10.8.0.3 ...
Is not possible?

Odesláno z mého SM-G935F pomocí Tapatalk

[TinCanTech]

Please read this and answer your own question:
HOWTO: Expanding the scope of the VPN to include additional machines

[hillcz]

Hi all
WINDOWS VPN client have address 10.8.0.4 for example
ROUTER as VPN client have address 10.8.0.8 and lan subnet 192.168.4.0/24

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Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         x.x.x.1 0.0.0.0         UG    0      0        0 eth0
10.8.0.0        0.0.0.0         255.255.255.0   U     0      0        0 tun0
x.x.x.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0

ON VPN server is route table horap

ip rule show

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0:      from all lookup local
32764:  from 10.8.0.4 lookup horap
32765:  from all to 10.8.0.4 lookup horap
32766:  from all lookup main
32767:  from all lookup default

ip route show table horap

Code: Select all

default via 10.8.0.8 dev tun0
192.168.4.0/24 via 10.8.0.8 dev tun0

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ip -s route get 192.168.4.1 from 10.8.0.4 iif tun0
192.168.4.1 from 10.8.0.4 via 10.8.0.8 dev tun0 table horap
    cache  users 1 age 4056sec iif tun0

But tracert is end on 10.8.0.1 (VPN SERVER IP)

THX for help

[hillcz]

Hi all
If i used TAP instead of TUN
Multiple routing tables are working perfect.
How i can disable internal roiting table in OPENVPN with TUN adapter?
I need route in kernel from openvpn client to openvpn client.

THX