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    pfsense doesn't block port on wan

    Scheduled Pinned Locked Moved General pfSense Questions
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    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      Just post the rule sets, the contents of the alias, and what you think should be happening. Not going to watch movies.

      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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      • emammadovE
        emammadov
        last edited by emammadov

        Firewall / Rules / WAN Destionation is "any"
        0_1540205789571_1.jpg

        Alias
        0_1540205813433_2.jpg

        Firewall / NAT / Port Forward
        0_1540205862192_3.jpg

        Firewall / Rules / WAN
        0_1540205888101_4.jpg

        Port check
        0_1540206038237_5.jpg

        Firewall / Rules / WAN Destionation is "WAN Address"
        0_1540206083476_6.jpg

        0_1540206105305_7.jpg

        Port check
        0_1540206120514_8.jpg

        When Destination in WAN Rules is "any", pfsense blocks, but if Destionation is "WAN Address", pfsense doesn't block.

        Elvin

        GrimsonG 1 Reply Last reply Reply Quote 0
        • GrimsonG
          Grimson Banned @emammadov
          last edited by

          @emammadov said in pfsense doesn't block port on wan:

          When Destination in WAN Rules is "any", pfsense blocks, but if Destionation is "WAN Address", pfsense doesn't block.

          That is, as already explained above, because the NAT port forward has already changed the destination address.

          Btw. opening RDP to the WAN is plain stupid, use a VPN for remote administration.

          emammadovE 1 Reply Last reply Reply Quote 0
          • emammadovE
            emammadov @Grimson
            last edited by emammadov

            @grimson But it has been worked in 2.4.3p1 version.

            Elvin

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              No it didn't - atleast not the way you think it was..

              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 24.11 | Lab VMs 2.8, 24.11

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              • emammadovE
                emammadov
                last edited by

                Then, you mean, if I want to block source ip, I have to choose "any" in Destination address and if I allow source ip to my pfsense, then i have to choose "WAN Address" in Destination address, right?

                Elvin

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by johnpoz

                  Post your rules HOW they are set, and what is not happening.. Lan rules have ZERO to on what happens inbound to the WAN..

                  Your running pfblocker - and you have rules in floating that block traffic.. If so then they could be blocking access to your port forward..

                  Unless you are using a VIP address on your wan, port forward will always be to wan address - which is the default. It will auto create the firewall rule for you by default. If you to limit to a specific alias as source that has zero to do with the dest address and can be be used in your port forward rule.

                  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 24.11 | Lab VMs 2.8, 24.11

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                  • emammadovE
                    emammadov
                    last edited by emammadov

                    I have sent you private message. By the way, I am using pfblocker, but Action in pfblocker is "Alias Native". I don't use floating rules.

                    Elvin

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      Dude I am not going to watch a freaking movie.. You scrolling around your rules makes it IMPOSSIBLE to see what might or might not be wrong.

                      Its this simple post your port forward, post your wan rules. Post your floating rules. (if nothing in there - still post them).. State what doesn't work.
                      https://www.netgate.com/docs/pfsense/nat/port-forward-troubleshooting.html

                      Just because your port test says not open doesn't mean the port forward didn't work btw. Maybe your client not listening or sending back RST because it doesn't allow rdp from IP other than its local lan, etc.. Run through the troubleshooting guide..

                      Port forwarding to 3389 is this simple.

                      0_1540232262788_portforward.png

                      Once I remove the rule - bam its BLOCKED!! You have to kill any open states that might exist..

                      0_1540232625664_blocked.png

                      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 24.11 | Lab VMs 2.8, 24.11

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                      • emammadovE
                        emammadov
                        last edited by

                        You approached. Now create a rule on wan interface, select block in action, add a public ip address you know to the source, choose "wan address " in destination, save and drag it to the above of the rule you created for rdp. You will see that ip addresses in source still can access your server via rdp, but if you select "any" in destination in the rule of wan address, pfsense will block the traffic from that public ip address.

                        Elvin

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                        • DerelictD
                          Derelict LAYER 8 Netgate
                          last edited by

                          Man. NAT HAPPENS BEFORE FIREWALL RULES ARE EVALUATED! WAN ADDRESS WILL NOT MATCH AS A DESTINATION ADDRESS FOR TRAFFIC MATCHING THE PORT FORWARD! THE DESTINATION ADDRESS HAS BEEN TRANSLATED TO THE SERVER ADDRESS!

                          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
                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator
                            last edited by

                            As Derelict has been trying to tell you for this whole thread. Now create your firewall rule with dest of your IP of your nat, ie 192.168.x.x

                            Put that above your rule that allows it.. And that IP would be blocked.

                            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 24.11 | Lab VMs 2.8, 24.11

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