Hi @mirco
Below is the server-side OpenVPN config (pfSense) :
dev ovpns2
verb 1
dev-type tun
dev-node /dev/tun2
writepid /var/run/openvpn_server2.pid
#user nobody
#group nobody
script-security 3
daemon
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
proto udp4
auth SHA256
up /usr/local/sbin/ovpn-linkup
down /usr/local/sbin/ovpn-linkdown
local 178.32.45.57
tls-server
server 10.90.200.0 255.255.255.0
client-config-dir /var/etc/openvpn/server2/csc
ifconfig 10.90.200.1 10.90.200.2
tls-verify "/usr/local/sbin/ovpn_auth_verify tls 'OpenVPN+Server' 1"
lport 10500
management /var/etc/openvpn/server2/sock unix
push "route 10.90.100.0 255.255.255.0"
remote-cert-tls client
route 192.168.2.0 255.255.255.0
capath /var/etc/openvpn/server2/ca
cert /var/etc/openvpn/server2/cert
key /var/etc/openvpn/server2/key
dh /etc/dh-parameters.2048
data-ciphers AES-256-CBC
data-ciphers-fallback AES-256-CBC
allow-compression no
topology subnet
explicit-exit-notify 1