Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Bridge IPSec Interfaces? *Resolved* - [It was a nice try]

    Scheduled Pinned Locked Moved 2.0-RC Snapshot Feedback and Problems - RETIRED
    6 Posts 3 Posters 5.4k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • J
      jits
      last edited by

      Hi.

      In PFsense 2.0, are we able to bridge IPSec interfaces?

      I'm asking because I'd like to use the same IP Addressing scheme for VOIP across Vlan networks via IPSec Tunnel.

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        No, that is not possible. I'm not sure there is any way to pull that off, even using IPsec in transport mode with GRE I don't think bridging works in that way.

        It's more of a headache than a help to use the same subnet in multiple locations. There is little to be gained from doing that.

        Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

        Need help fast? Netgate Global Support!

        Do not Chat/PM for help!

        1 Reply Last reply Reply Quote 0
        • J
          jits
          last edited by

          Hi Jimp,

          Again, thanks very much for replying.

          For bridging via IPSec, I was thinking the two tunnels would have their own IP Addresses.

          >>>>>>>>>>>BRIDGED<<<<<<<<<<<
          [ Site A LAN] โ€“-Tunnel Interface on Site A - 192.168.100.1======192.168.100.2 - Tunnel interface on Site B --- [Site B LAN]
          [ Site A LAN DHCP โ€“--------->--------->-------- Populates Site B LAN ------<---------<--------DHCP Requests Site B LAN ]
          [ โ€“-------------------------------------------------192.168.1.0/24----------------------------------------------------- ]

          If this can't be done via IPSec, then fooget ahbout it!

          I've got DSL bridging happening this way, so it was just a thought. thanks for replying..Jits

          1 Reply Last reply Reply Quote 0
          • J
            jlepthien
            last edited by

            It can't be done with pfSense. With a WatchGuard running XTM firmware that is possible using 1:1 NAT in VPNโ€ฆ

            Both sides would use the same ip network but you can configure the tunnel with networks you like and then it would be 1:1 NATed...
            Still that config would be a little different than your picture, but as Jim said, that is not possible...

            | apple fanboy | music lover | network and security specialist | in love with cisco systems |

            1 Reply Last reply Reply Quote 0
            • jimpJ
              jimp Rebel Alliance Developer Netgate
              last edited by

              Even if you could do do 1:1 NAT like that with IPsec, it still wouldn't pass DHCP and broadcasts.

              Though OpenVPN has a tap mode that does bridging, last I heard it didn't work all that well. You could also do that 1:1 NAT trick with OpenVPN but it would take quite a bit of finesse to make it happen.

              Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

              Need help fast? Netgate Global Support!

              Do not Chat/PM for help!

              1 Reply Last reply Reply Quote 0
              • J
                jits
                last edited by

                Okay. Thanks.

                Jits

                1 Reply Last reply Reply Quote 0
                • First post
                  Last post
                Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.