Outbound openvpn to Expressvpn and route voIP traffic through it only - Bid $

[stephenw10]

Reading through this:
http://openvpn.net/index.php/open-source/documentation/howto.html#redirect
and then this:
http://openvpn.net/index.php/open-source/documentation/manuals/65-openvpn-20x-manpage.html

It would appear that the reason your routing table is being overwritten is due to the advanced command in the openvpn client setup: redirect-gateway def1
Assuming you copied this from the StrongVPN guide.

First check that your routing table is being changed as I outlined in my previous post. Then try removing this command and recheck.
If this successfully prevents your default route changing then you can remove the gateway settings from the 'lan to any' rule.

Steve

[xbipin]

well i didnt, i use the below commands only

fast-io;route-delay 2;verb 5;tun-mtu 1500;mssfix 1450;fragment 1300;persist-key;

expressvpn gave me a ovpn file with the below contents so could u recommend what commands should i use out of them

dev tun
fast-io
#proto tcp-client
persist-key
persist-tun
replay-persist cur-replay-protection.cache
nobind
remote canada-cluster.expressnetwork.net 1194
remote canada-cluster2.expressnetwork.net 1194
remote canada-cluster3.expressnetwork.net 1194
remote canada-cluster4.expressnetwork.net 1194
remote-random
pull
# Use compression
comp-lzo
# Strong encryption
tls-client
tls-remote server
ns-cert-type server
tls-auth ssl/ta.key 1
verb 3
cert ssl/client.crt
key ssl/client.key
ca ssl/ca.crt

route-method exe
route-delay 2

tun-mtu 1500
fragment 1300
mssfix 1450

[stephenw10]

We have reached the limits of my own experience with this, anything further is experimental!  ::)
However since something apparently is causing you default route to change I think you first need to confirm this is happening when you connect the OpenVPN tunnel by comparing your routing table before and after.

Steve

[xbipin]

i dont think the default gateway is being changed

screenshot attached for before vpn and after vpn

[stephenw10]

No but it is pushing a route, 0.0.0.0/1, which includes the entire internet! It never has to use the default route any more because it has a route to everywhere.

This is the expected behaviour if the server is pushing the redirect-gateway def1 command:

Add the def1 flag to override the default gateway by using 0.0.0.0/1 and 128.0.0.0/1 rather than 0.0.0.0/0. This has the benefit of overriding but not wiping out the original default gateway.

You could prevent this by using the 'route-nopull' option in the client config but that will probably prevent any routing information being sent making the vpn connection useless. Might be worth a try though.  :-\

Steve

Edit: You can add routes back manually to the config file:
route yourvoipserverIP;

[xbipin]

after i added route-nopull i get the below routing table which seems correct now

[xbipin]

if i added the 'route-nopull' then went to AON and switched it back to Auto and under rules in lan to any removed the gateway which was as wan, all traffic goes out the default wan conenction which earlier wasnting working at all untill i specified wan as gateway so i guess that got solved.

according to this thread http://forum.pfsense.org/index.php/topic,7361.0.html its not possible to shape traffic that goes inside a tunnel so the whole tunnel traffic needs to be sent to a single queue so i just want to route the voip so i added 2 rules under floating tab one with direction out and selected source as any and destination as vpn subnet and other as traffic in, source vpn subnet and destination any and assigned the qvoip to both but only the in traffic goes to qvoip and the out still goes to qp2p. both the rules r set as queues

[xbipin]

i guess i spoke too soon, AON needs to be left on but the default lan to any doesnt need a gateway atleast

[stephenw10]

You will always need AON enabled due to changes in openvpn setup detailed by ermal.

That's a good result though. Did you have to add a route back in the client config?

Steve

[xbipin]

no i didnt add any client config, all i did is add ur recommended command under advanced configuration in the client openvpn section which looks like this now

fast-io;route-delay 2;route-nopull;verb 5;tun-mtu 1500;mssfix 1450;fragment 1300;persist-key;

[stephenw10]

@xbipin:

according to this thread http://forum.pfsense.org/index.php/topic,7361.0.html its not possible to shape traffic that goes inside a tunnel so the whole tunnel traffic needs to be sent to a single queue

That's only true for traffic in tunnel going through the pfSense box. Since the traffic destined for the VPN enters pfSense unencrypted it should be possible to shape it. Though I'm not sure quite how!

@xbipin:

i just want to route the voip so i added 2 rules under floating tab one with direction out and selected source as any and destination as vpn subnet and other as traffic in, source vpn subnet and destination any and assigned the qvoip to both but only the in traffic goes to qvoip and the out still goes to qp2p. both the rules r set as queues

Probably the out rule is not catching traffic because the VOIP server is not in the VPN subnet. Though the IN rule is catching traffic.  :-\

Steve

[xbipin]

but if u see, the rule under lan that says lan to sip server should go through vpn gateway, pfsense catches that and send it to the proper gateway so basically its able to detect upload traffic so then y cant it just assign the proper queue.

any1 else have any idea on how to send vpn traffic to the proper queue as all i would be sending through the tunnel is voip only so might as well send all vpn to the voip quene entirely

[stephenw10]

Can you give some screen shots of your queue rules, firewall rules etc?

Steve

[xbipin]

the rules on the floating tab are just queues

[xbipin]

few more screenshots

[xbipin]

the 2 rules on floating tab that say * to mysip and mysip to * were originally created when i wasnt using vpn and voip used to work directly through wan. after vpn, the only additional rule i created was under lan for UDP * to mysip using gateway expressvpn

[stephenw10]

Well this is definitely outside my experience now.  ;)
However I think you need to disable the * to mysip rules on floating in order to make sure it's not them that are catching the inbound traffic and sending it to qvoip.

Also I can't see how outbound traffic can possibly end up in qp2p when the only reference to it is for port 28183.  :-\

Steve

[xbipin]

well the 2 rules for mysip were made so traffic goes to qvoip, if i remove that then wont both up and down goto qp2p, we r trying here to send traffic tot he qvoip

[stephenw10]

It may well but at least that would tell us which rule is sending traffic to qvoip, mysip to * or VPN to *.

I still don't understand why any of that traffic would go to qp2p, is there a rule I'm missing?

Busily reading the chapter 16 of the definitive guide…..

Steve

[xbipin]

attached r screenshots of the traffic shaper and i added the same queues under expressvpn interface which initially were not there, after doing so i see the voiptraffic going out of vpn under queue qvoip in lan and qvoip in expressvpn but all list in qp2p on wan under queues, i dont know if this is correct or no coz i think i have rules missing which would make the total traffic go out of qvoip on wan mayb because thats encrypted openvpn traffic, so could u tell me what rule to create for openvpnt raffic, i mean does it come under gre, udp or tcp or any specific ports?