Is my first VPN,for testing

this is my simple network scheme

LAN1(private 10.10.0.0/24) --->VPN-----internet---<VPN---<LAN2(private 10.20.0.0/24)

on /etc/ipsec.conf i use..

...
        left=ippublicserver1
        leftid=fqdnserverA
        leftsubnet=10.10.0.0/24
        right=ippublicserver2
        rightsubnet=10.20.0.0/24
....

My question is really simple..,on the serverB I have to use

a)An IDENTICAL ipsec.conf

b)A Different ipsec.conf where rigthsubnet become leftsubnet?

I think..B,is correct?

Is my first VPN, for testing

this is my simple network scheme

LAN1(private 10.10.0.0/24) --->VPN-----internet---<VPN---<LAN2(private 10.20.0.0/24)

on /etc/ipsec.conf i use..

...
        left=ippublicserver1
        leftid=fqdnserverA
        leftsubnet=10.10.0.0/24
        right=ippublicserver2
        rightsubnet=10.20.0.0/24
....

My question is really simple..,on the serverB I have to use

1. An IDENTICAL ipsec.conf

2. A Different ipsec.conf where rigthsubnet become leftsubnet?

I think..B, is correct?