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Multi Subnet/WAN from multi ISP to single interface

Scheduled Pinned Locked Moved Routing and Multi WAN
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  • N
    nicknuke
    last edited by Dec 13, 2023, 4:14 AM

    Right now I am using unmanaged switch to distribute Public IP from 2 ISP ( each have /28 network ).
    The IPs are being used for some directly connected servers,
    and to 2 pfsense nat boxes ( physically attached nic to the switch )

    I know it may not be a good practice, but to my surprise the unmanaged switch works.
    If I put ip addr add ( along with the additional routing table ) on any of the linux servers,
    they have 2 diff IP from 2 diff. ISP.

    Now on the pfsense nat box, how do i achieve this ?
    I knew i can put additional IP in CARP virtual interface, but they're in the same subnet and same gateway from 1 ISP.
    Will I be able to just add ISP2 Gateway, and add ISP2 public IP to this single WAN interface as virtual IP / CARP in pfsense ?

    The reason is there will be third ISP coming in.. And I think having additional pfsense is not quite practical.

    V 1 Reply Last reply Dec 14, 2023, 9:50 PM Reply Quote 0
    • V
      viragomann @nicknuke
      last edited by Dec 14, 2023, 9:50 PM

      @nicknuke
      If you don't have enough network ports on pfSense consider to get a VLAN capable switch and assign both WANs as VLANs to pfSense.

      N 1 Reply Last reply Dec 15, 2023, 12:16 PM Reply Quote 0
      • N
        nicknuke @viragomann
        last edited by Dec 15, 2023, 12:16 PM

        @viragomann

        Yes... thought so .. Guess it will have to come to that after all...
        Thanks !

        1 Reply Last reply Reply Quote 0
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