Cannot ping remote gateway from LAN side

ccb056

Attempting to setup pfsense as a OpenVPN client connected to OpenVPN server on dia.whatbox.ca

https://whatbox.ca/wiki/OpenVPN

see below for the contents of pfsense's /var/etc/openvpn/client2/config.ovpn

dev ovpnc2
verb 1
dev-type tun
dev-node /dev/tun2
writepid /var/run/openvpn_client2.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 47.210.156.168
tls-client
client
lport 0
management /var/etc/openvpn/client2/sock unix
remote dia.whatbox.ca 1194 udp4
auth-user-pass /var/etc/openvpn/client2/up
auth-retry nointeract
capath /var/etc/openvpn/client2/ca
tls-auth /var/etc/openvpn/client2/tls-auth 1
ncp-disable
cipher AES-256-CBC
allow-compression no
resolv-retry infinite
pull-filter ignore 'route '
pull-filter ignore redirect-gateway

pfSense can connect, and ping 10.8.0.1, however, machines on the pfsense LAN side cannot ping 10.8.0.1

Any ideas?

viragomann

@ccb056
Presumably the other site has no route to your LAN network.

ccb056

@viragomann

How could I fix that, looks like the other site can at least ping me:

viragomann

@ccb056
You need to add a route line for your LAN to the remote vpn config, e.g. if your LAN is 10.20.10.0/24

route 10.20.10.0 255.255.255.0

Also if you need to access another subnet behind the remote vpn endpoint you need to add it to the pfSense settings. This can be done by entering the network in the "Remote networks" box, e.g. 10.20.20.0/24.

ccb056

@viragomann

What if I can't change the config file on the server?

viragomann

@ccb056
Masquerading is another possible solution.

To set it up, if you're running multiple OpenVPN instances assign an interface to the concerned one before going on.

Then go to Firewall > NAT > Outbound.
By default the outbound NAT works in automatic mode. If so switch to hybrid mode and hit save.

Then add a new rule like this:
interface: that one you've assigned to the vpn instance or OpenVPN if not
source: your LAN network or any
destination: any
translation: interface address
save settings

Now LAN devices should be able to access the remote site.

ccb056

Perfect! That worked - thank you :)