pfSense/ESXi route all VM via GRE TUNNEL

patient0

@IIMKIIVG said in pfSense/ESXi route all VM via GRE TUNNEL:

It was simple. I activated it as default gateway and all my VMs are getting routed via gre tunnel, That's perfect now.

Just so you are aware, a GRE tunnel is not encrypted. If you tunnel across the internet, GRE+IPSec would be a solution.

IIMKIIVG

How does it affect in what manners?
I have zero knowledge about this. if you can explain in detail then it will help me.

Thanks

IIMKIIVG

@stephenw10

Hi,

I have got it working by setting that gre tunnel as default gateway. But the problem is all the VMs are routing via that gre tunnel.

I wants to route specific VM only with that gre tunnel, Is that possible?

stephenw10

Yes, you need to policy route that specific VM by using a firewall rule with just that VM IP as the source. Then set the gateway there.

Yes, GRE is not encrypted so anything in the route could see the traffic. That often wouldn't matter. If it's https traffic that's encrypted anyway for example.

IIMKIIVG

@stephenw10

I did it already and it doesn't changes the VM IP.
But when I set the gre tunnel as default gateway it changes all VMs IP.

stephenw10

Then the rule is not catching the traffic. It has to be in the LAN side ruleset before any other pass rules you might have there.

IIMKIIVG

@stephenw10

Yeah it's on LAN side and on top. First rule. Still doesn't changes VM IP.

IIMKIIVG

@stephenw10

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stephenw10

That should certainly do it. You can see the rule has states and bytes on it.

How are you testing?

IIMKIIVG

@stephenw10

Yeah that's what I was wondering, But on my windows VM still shows default gateway IP. Not the gre tunnel ip.

Even restarted my VM.

stephenw10

Where does it show it? How are you testing?

You may need to clear any existing states. Traffic that was already passing would not be cleared.

IIMKIIVG

@stephenw10

Speedtest.net
whatismyip.com
whatismyipaddress.com
dnsleaktest.com

all shows the deafult gateway IP.
All the rules are cleared except RDP one.

IIMKIIVG

@stephenw10

Cleared all the existing states as well.
Is that firewall bug?

Using version:
2.7.2-RELEASE (amd64)

Please let me know.

stephenw10

Do you have any floating rules?

Is the OPT1_TUNNEL gateway up?

Try checking Diag > States for states from 192.168.1.11.

IIMKIIVG

@stephenw10

oh my man, These silly mistakes is wasting my time.
The gateway was being considered as offline, So I had to disable gateway monitoring. and it solved the problem.

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Thank you so much