About Site to site VPN


#1

Hello,
I have built a site to site VPN thought Peplink 380 and 210.
When I Ping the remote site’s IP address. The result is below

Pinging 192.168.9.200 with 32 bytes of data:
Reply from 5.192.37.78: Destination host unreachable.
Reply from 5.192.37.78: Destination host unreachable.
Reply from 5.192.37.78: Destination host unreachable.
Reply from 5.192.37.78: Destination host unreachable.

Ping statistics for 192.168.9.200:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
The PC of 192.168.9.200 is shutdown.
We would like to know why the external IP will reply to our internal network.
The VPN is private or not.
Thank You.


#2

Hi,

5.x.x.x is our SpeedFusion tunnel interface IP. Believe you are doing ping test from Balance to remote host.

Don’t worry, this is normal.


#3

Could You mind to tell me more detail, or some documents will talk about this.


#4

Hi,

By default, a SpeedFusion profile will fully connect all selected highest priority WAN ports between two locations. For example, if Office A and Office B each have 3 x WAN connections, then SpeedFusion will connect multiple tunnels between Office A and Office B as shown in the following diagram:


Basically IP 5.x.x.x is using within each SpeedFusion tunnels.