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Direct VPN tunnel over the Internet on the same subnet


I have a VPN tunnel with sonicwalls on both ends. Is there a way to have site B on the same subnet as site A?


Category: High End Firewalls


  • TonyATonyA SonicWall Employee

    Hi @JAlkazian ,

    If both sites have the same subnet, you can set up a site to site VPN and use NAT to help the traffic traverse.

    Please see the following KB article that will show you the steps how to set this up:

    How can I configure NAT over VPN in a Site to Site VPN? | SonicWall

    Or do you mean you are looking to extend the network from Site A to Site B? Due to routing issues, this is not possible but if they both have the same subnet, please see the kb above.


  • AjishlalAjishlal Community Legend ✭✭✭✭✭


    What exactly you want to accomplish with this configuration?

  • JAlkazianJAlkazian Newbie ✭

    ideally both sites would be using the same subnet because site B cannot reach an IP address on site A that is connected on a separate VPN on site A

  • TonyATonyA SonicWall Employee

    Hi @JAlkazian ,

    Based on your last comment, It sounds like you have 3 sites and you would like communication between all three? if that is the case, a hub and spoke VPN set up might be what you are looking for:

    Implementing Hub and Spoke Site-to-Site VPN (Video Tutorial) | SonicWall


  • TalleyrandTalleyrand Newbie ✭

    It's not a smart move......

    Use NAT.....

    You will get masses of garbage windows packets going over your network , that does not specifically need to.

    also you end up with problems of broadcast packets....

    and don't even get me started about multi site DNS & DHCP.....

    I run something similar between multi countries.

    Setup a nice subnet at each site and then NAT between locations, only for the traffic you need.

  • JAlkazianJAlkazian Newbie ✭

    Thank you... yea, not going to go that way... much appreciated for all your guidance.

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