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    Routing loop with my configuration

    OpenVPN
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    • P
      pierinhood last edited by

      Hi there,
      I use two Pfsense v2.4.4 in two different locations with the following configuration:

      • Office 1
        ISP Router (ip 172.20.1.1) --> Pfsense Wan port (172.20.1.254)
        --> Pfsense Lan port (172.31.1.1)

      • Office 2
        Pfsense WAN port (Public IP)
        Pfsense LAN port (10.100.0.1)

      The two routers are connected through a VPN Ipsec and both Offices can communicate through lan.
      Following this guide https://www.netgate.com/docs/pfsense/book/ipsec/site-to-site.html I managed to set successfully a gateway and a static route to the PFsense in Office 1:

      Office 1:
      10.100.0.0/24 gw 172.31.1.1

      Office 2:
      172.31.1.0/24 gw 10.100.0.1

      I configured an OpenVPN Remote Access Server in Office 1 that push both lan 172.31.0.0/24 and 10.100.0.1/24
      Client connecting through VPN using OpenVPN can reach flawlessly the lan in Office 1 (172.31.0.0./24) but can’t reach, probably due to routing loops, the lan in Office 2 (10.100.0.0/24:)

      tracert 10.100.0.1
      Trace Route toward 10.100.0.1 based on a maximum of 30 passage points:
      1 7 ms 6 ms 6 ms 10.1.2.1
      2 7 ms 7 ms 6 ms 172.31.1.1
      3 8 ms 8 ms 7 ms 172.31.1.1
      4 6 ms 8 ms 6 ms 172.31.1.1
      5 8 ms 6 ms 7 ms 172.31.1.1
      6 9 ms 9 ms 10 ms 172.31.1.1
      7 8 ms 7 ms 9 ms 172.31.1.1
      8 7 ms 7 ms 7 ms 172.31.1.1
      9 7 ms 7 ms 9 ms 172.31.1.1
      10 6 ms 8 ms 7 ms 172.31.1.1
      11 7 ms 7 ms 7 ms 172.31.1.1
      12 7 ms 7 ms 7 ms 172.31.1.1
      13 8 ms 7 ms 7 ms 172.31.1.1
      14 8 ms 7 ms 6 ms 172.31.1.1
      15 9 ms 8 ms 7 ms 172.31.1.1
      16 9 ms * 7 ms 172.31.1.1
      17 7 ms 7 ms 7 ms 172.31.1.1
      18 7 ms 6 ms 7 ms 172.31.1.1
      19 7 ms 7 ms 7 ms 172.31.1.1
      20 7 ms 7 ms 6 ms 172.31.1.1
      21 8 ms 7 ms 7 ms 172.31.1.1
      22 7 ms 7 ms 7 ms 172.31.1.1
      23 7 ms 7 ms 6 ms 172.31.1.1
      24 7 ms 7 ms 7 ms 172.31.1.1
      25 7 ms 7 ms 7 ms 172.31.1.1
      26 8 ms 7 ms 6 ms 172.31.1.1
      27 7 ms 7 ms 7 ms 172.31.1.1
      28 7 ms 7 ms 7 ms 172.31.1.1
      29 8 ms 6 ms 6 ms 172.31.1.1
      30 8 ms 7 ms 7 ms 172.31.1.1

      Can you help me understand as well as finding a solution?
      Thank you!

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