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

    Help With Outbound NAT (I think)

    Scheduled Pinned Locked Moved NAT
    9 Posts 3 Posters 2.1k 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
      tscott
      last edited by

      I'm setting up pfsense for the very first time. Zero experience. I think my problem pertains to outbound NAT but I'm not certain.

      The LAN subnet is 10.7.2.0/24 and works fine but there is a group of devices on the network on 10.7.3.0/24 and these devices cannot access the Internet.

      What needs to be configured to allows access?

      1 Reply Last reply Reply Quote 0
      • KOMK Offline
        KOM
        last edited by

        Only the LAN interface gets a default Allow All to Any rule.  All other internal interfaces must have a rule added.

        1 Reply Last reply Reply Quote 0
        • T Offline
          tscott
          last edited by

          @KOM:

          Only the LAN interface gets a default Allow All to Any rule.  All other internal interfaces must have a rule added.

          So do I have to create an interface for the 10.7.3.0/24 network or just a NAT rule? It's not clear to me where to set this up.

          I tried creating a new outbound NAT rule for the WAN with source 10.7.3.0/24 but it didn't work.

          1 Reply Last reply Reply Quote 0
          • KOMK Offline
            KOM
            last edited by

            You would typically have a separate interface for the other LAN (OPT1, OPT2 etc) or at least some VLANs if you just have the one internal interface.  The devices at 10.7.3.x, do they have pfSense as their gateway?

            1 Reply Last reply Reply Quote 0
            • johnpozJ Offline
              johnpoz LAYER 8 Global Moderator
              last edited by

              So this 10.7.3.0/24 is another vlan?  You have a downstream router?  Or your saying you run multiple layer 3 networks over the same layer 2?

              An intelligent man is sometimes forced to be drunk to spend time with his fools
              If you get confused: Listen to the Music Play
              Please don't Chat/PM me for help, unless mod related
              SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

              1 Reply Last reply Reply Quote 0
              • T Offline
                tscott
                last edited by

                @KOM:

                You would typically have a separate interface for the other LAN (OPT1, OPT2 etc) or at least some VLANs if you just have the one internal interface.  The devices at 10.7.3.x, do they have pfSense as their gateway?

                Yes, they have pfsense as the gateway.

                1 Reply Last reply Reply Quote 0
                • T Offline
                  tscott
                  last edited by

                  @johnpoz:

                  So this 10.7.3.0/24 is another vlan?  You have a downstream router?  Or your saying you run multiple layer 3 networks over the same layer 2?

                  There are a couple of VLANs (10.7.10.0 and 10.7.11.0) which are working great.
                  The 10.7.3.0 is not a VLAN. It is, as you said, layer 3 over the same layer 2.

                  At one point I believe it was configured as a /16 network (10.7.0.0/16) but was later split. It worked fine with the Sophos UTM that this pfsense is replacing.

                  1 Reply Last reply Reply Quote 0
                  • johnpozJ Offline
                    johnpoz LAYER 8 Global Moderator
                    last edited by

                    "The 10.7.3.0 is not a VLAN. It is, as you said, layer 3 over the same layer 2."

                    That is BROKEN setup - fix it, make it a vlan or change your mask to be /23 to cover your 2 /24 your running.  Running 2 different layer 3 on same layer 2 is BORKED and needs to be corrected.

                    10.7.2.0/23 covers your range 10.7.2.1 to 10.7.3.254

                    An intelligent man is sometimes forced to be drunk to spend time with his fools
                    If you get confused: Listen to the Music Play
                    Please don't Chat/PM me for help, unless mod related
                    SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

                    1 Reply Last reply Reply Quote 0
                    • T Offline
                      tscott
                      last edited by

                      @johnpoz:

                      "The 10.7.3.0 is not a VLAN. It is, as you said, layer 3 over the same layer 2."

                      That is BROKEN setup - fix it, make it a vlan or change your mask to be /23 to cover your 2 /24 your running.  Running 2 different layer 3 on same layer 2 is BORKED and needs to be corrected.

                      10.7.2.0/23 covers your range 10.7.2.1 to 10.7.3.254

                      Thank you. Clearly I need to study up on subnetting.
                      I will work on this today and see where it goes.

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