Switching from /24 to /23 LAN

  • Hopefully someone can answer this in 2 seconds.  We have a running pfsense install with a /24 LAN.  We are in need of more IPs for a growing company.  We are trying to switch to a /23 on the LAN setup page.

    All seems well when we look at the DHCP server, saying the pool could be as wide as -  However, if I set any computer to 192.168.51.xxx with /23 subnet, I cannot ping the pfsense box.

    What settings do I need to check?

  • Lan firewall rules correct?

  • Just standard set I believe.  Attached.

    ![lan firewall.PNG](/public/imported_attachments/1/lan firewall.PNG)
    ![lan firewall.PNG_thumb](/public/imported_attachments/1/lan firewall.PNG_thumb)

  • Banned


    • Interface
    • NAT
    • DHCP-server

    -> reboot, incl. all switches

    Should do the trick

  • Re-writing this post…

    Under your NAT you have still hanging around under automatic.

    Try using manual only and see if you can get rid of those entries...

  • LAYER 8 Global Moderator

    Your automatic mappings have an overlap 192.168.50/23 overlaps with 192.168.51/24 why are both listed there?  I would switch to manual completely and then switch back to automatic did that clear the issue..  You shouldn't be seeing both those networks in there.

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