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

    Two PFsense firewalls and same WAN ip adresses

    Scheduled Pinned Locked Moved General pfSense Questions
    3 Posts 3 Posters 1.4k 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.
    • T Offline
      Thompha
      last edited by

      Hello,

      Just wondering if this setup is possible. Two companys share the same ISP and uses adresses in a ..197.17/28 WAN net. That gives us like 12 available IP adresses. I want to use two pf sense firewalls to split them. These firewalls will be plugged in to the same switch. Like this:

      / –> FW1 --> LAN1
      INTERNET --> SWITCH
                                    \ --> FW2 --> LAN2

      If we say as an example that FW1 has WAN ip "..197.20" and FW2 has WAN ip "..197.21", can I then use the virtual IP option to add more ip adresses to both of them? Like ..197.21-23 to FW1 and ..197.25-27 to FW2?

      1 Reply Last reply Reply Quote 0
      • ? This user is from outside of this forum
        Guest
        last edited by

        Yes you can do this, although you don't actually need two firewalls.  A separate LAN card in one firewall will do this job as long as you are making judicious use of firewall rules to keep the two companies separate.  But yes, you can definitely do this with 2 firewalls.

        1 Reply Last reply Reply Quote 0
        • S Offline
          Supermule Banned
          last edited by

          Two firewalls cannot share the same IP…..But different IP's over the same physical wire, is possible.

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