Configuring s to s VPN between three devices.

[Gururaj]

Hi All,..

We have two clients who have same ip subnets for VPN users ( ex. 192.168.29.0/24). Is it possible to configure PaloAlto to support both VPNs for different source users. 

                            VPN1:      Source- 10.66.249.0/24            Destination- 192.168.29.0/24     Peer IP-  X.X.X.X

                            VPN2:      Source- 172.16.1.0/24              Destination- 192.168.29.0/24     Peer IP- y.y.y.y

Can we use PBF to achieve this.

Ex. If source is 10.66.249.0/24 and destination is 192.168.29.0/24 then route to tunnel.1

      If source is 172.16.1.0/24 and destination is 192.168.29.0/24 then route to tunnel.2

If this works what ip address we needs to assign for each tunnel . Because without ip address to tunnel we can't use PBF.

Correct me if am wrong.

Kindly help,.

Regards,

Gururaj

[HULK · Accepted solution]

Hi Gururaj,

If i understood correctly, above mentioned subnets are belong to private networks right ( end users)..?. But Site to site VPN will establish between  gateway to gateway, (between two public IP address).

So, it will be ok to configure 2 different tunnel and Palo Alto firewall will support the same.

Please  configure proxy ID for both tunnel.

Thanks

Subhankar

[Gururaj]

Hi Subhankar,.

But in Virtual router we need to give static route for private subnets to route through tunnel.Below is the snap for the same.

In our scenario destination (private network) for both sites is 192.168.29.0/24, How we can define two static routes for same destination?

Can we use PBF to achieve this.

Ex. If source is 10.66.249.0/24 and destination is 192.168.29.0/24 then route to tunnel.1

      If source is 172.16.1.0/24 and destination is 192.168.29.0/24 then route to tunnel.2

If this works what ip address we needs to assign for each tunnel we should use. Because without ip address to tunnel we can't use PBF.

Correct me if am wrong.

Thank you,

Gururaj

[HULK]

Hi Gururaj,

Overlapping subnets for host IP's are supported only when they are in a separate virtual router. For example:

Virtual Router1: 192.168.1.1/24

Virtual Router2: 192.168.1.2/24

Hope it will help you.

Thanks

[VinceM]

Hi,

Doc fo you: https://live.paloaltonetworks.com/docs/DOC-1594 🙂

hope help

V.