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    Address pools for NAT: What happens when the pool runs out

    Scheduled Pinned Locked Moved NAT
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    • N
      n3mmr
      last edited by

      When you have no more addresses in the pool, will pfSense do overloading as with using a single address?

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      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by

        Based on the lack of information that was provided, yes. It gives the NAT process more addresses to source from.

        Chattanooga, Tennessee, USA
        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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        • N
          n3mmr
          last edited by

          So if you have an address pool of 8 addresses, and 8 local users connect to the internet, I can configure the system so that these first 8 all get a different public address?
          And then, when the ninth user connects to the internet he gets to share a public address with one of the first 8 users?

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by

            https://doc.pfsense.org/index.php/Outbound_NAT

            Chattanooga, Tennessee, USA
            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
            Do Not Chat For Help! NO_WAN_EGRESS(TM)

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            • N
              n3mmr
              last edited by

              My question is not answered in that wiki section.

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              • DerelictD
                Derelict LAYER 8 Netgate
                last edited by

                Pretty sure it was but if that was not complete enough, then https://portal.pfsense.org/docs/book/nat/outbound-nat.html

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                • N
                  n3mmr
                  last edited by

                  Costs 99 dollars to see.

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                  • K
                    kpa
                    last edited by

                    The standard outbound NAT in pfSense is not a 1:1 mapping, multiple LAN clients will be using the same external address and rotated in round-robin fashion if multiple external addresses are available. There is no such thing as pool running out of addresses.

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                    • DerelictD
                      Derelict LAYER 8 Netgate
                      last edited by

                      @n3mmr:

                      Costs 99 dollars to see.

                      Then you get the free version here: https://doc.pfsense.org/index.php/Outbound_NAT

                      Chattanooga, Tennessee, USA
                      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                      Do Not Chat For Help! NO_WAN_EGRESS(TM)

                      1 Reply Last reply Reply Quote 0
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