Full VPN tunnel from FlexH 1.32 FW to Nebula Org firewall

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  • GiuseppeR
    GiuseppeR Posts: 431  Master Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula First Comment Friend Collector

    Yes VTI are in the same subnet now, but the hidden mistake was to use the same IP (not the same subnet…) for both. I did not see this mistake because it was set once on Nebula and never checked again until some hours of testing.

    Now I have this rule working properly:

    immagine.png

    but the local LAN of FlexH goes remotely on the first subnet it finds.

    When I set the VPN as "Custom" on FlexH I told the VPN to go to a specific remote subnet but it seems it ignores that:

    immagine.png

    that blu "Destionation" subnet is where I wanted to have that traffic from VPN.

    Remotely I have different subnets:

    • 192.168.1.1
    • 192.168.10.1
    • 192.168.201.1 and so on….

    So the traffic from VPN has to go on a specific one.

    In reality the VPN goes to 192.168.1.1 network

    Should I used this advance area to specificy which is the remote destination?

    immagine.png
  • PeterUK
    PeterUK Posts: 3,893  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary

    The static route setup is not for ORG1 (FLEX H) remove it the static route setup is or ORG2

    leave NAT rule blank

    Untitled Image
  • Zyxel_Melen
    Zyxel_Melen Posts: 3,529  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @GiuseppeR

    May I know the site-to-site VPN setting on org B(USG FLEX)?

    Please check if you enable "use VPN" for the second interface/subnet. If not, please enable it first.

    image.png

    Then, back to USG FLEX H local GUI and navigate to Menu > Network > Routing > Static Route to check if both LAN interface/subnet has the static route rule. In my lab, I have two static route for the two LAN interface

    image.png

    Once it has, you can access it from H side.

    image.png
    Zyxel Melen