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

    opening ports on firewall

    Scheduled Pinned Locked Moved Firewalling
    38 Posts 7 Posters 5.3k 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.
    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      I don't know what didn't see anything standing out means. Did you see the SYN arrive or not?

      If you packet capture on WAN for port 32900 and test from the outside, you should see the SYN packet arrive.

      If you see it, then move your capture to the inside interface for port 32400, you should see the SYN packet sent to 10.0.0.37.

      If there is no response, look at the server (10.0.0.37) and see why.

      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)

      R 1 Reply Last reply Reply Quote 0
      • DerelictD
        Derelict LAYER 8 Netgate @akuma1x
        last edited by Derelict

        @akuma1x said in opening ports on firewall:

        Alright, your NAT rules look correct, might want to make the protocol both TCP/UDP, and not just TCP.

        Pet peeve of mine. You shouldn't just randomly forward traffic. You should know if you need TCP, UDP, or both and forward what is required.

        If he pcaps filtering on just the port, it will show both.

        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 1
        • R
          richardlhughes @Derelict
          last edited by

          @Derelict I didn't do the packet capture on the WAN, the troubleshooting list.

          How do I setup packet capturing on the WAN? is this something I can setup on my pfsense machine or what is the best method?

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

            diagnostic menu, packet capture.. put in the port your wanting to check, wan and click start... Then send the test traffic to that port.

            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

            1 Reply Last reply Reply Quote 0
            • DerelictD
              Derelict LAYER 8 Netgate
              last edited by Derelict

              Diagnostics > Packet Capture:

              Interface: WAN
              Port: 32900

              Start, Test, Stop, Evaluate.

              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
              • R
                richardlhughes @akuma1x
                last edited by

                @akuma1x said in opening ports on firewall:

                Alright, your NAT rules look correct, might want to make the protocol both TCP/UDP, and not just TCP.

                Your WAN rules are incorrect. Your FIRST set of 443 and 80 allow traffic to just your firewall, not another LAN machine. If you move these two new bottom rules to the very TOP of your firewall rule list, the traffic should move like you are expecting/hoping.

                Firewall rules are evaluated top down, first to match wins. That's why nothing is hitting 10.0.0.5, 80 and 443 are bouncing around inside the firewall itself, due to the first 2 top rules.

                Jeff

                Using the HA Proxy and not NAT the machine directly I don't think I need the firewall rule to the web server directly on the WAN. I have the NAT for port 80 and 443 disabled along with those firewall rules. I can put 2 new rules to wan to the webserver and see if that works.

                1 Reply Last reply Reply Quote 0
                • DerelictD
                  Derelict LAYER 8 Netgate
                  last edited by

                  Using HAproxy is a completely different thing. In that case you would need rules passing traffic to the frontend(s).

                  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

                    And we still don't have a 30 second sniff of wan..

                    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

                    1 Reply Last reply Reply Quote 0
                    • chpalmerC
                      chpalmer
                      last edited by chpalmer

                      The first two WAN rules should probably be "WAN Address" instead of "This Firewall".

                      Just a guess.

                      Triggering snowflakes one by one..
                      Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                      1 Reply Last reply Reply Quote 0
                      • R
                        richardlhughes
                        last edited by

                        I have the wan packets capture what do you wan me to post here?

                        1 Reply Last reply Reply Quote 0
                        • DerelictD
                          Derelict LAYER 8 Netgate
                          last edited by Derelict

                          Just enough to show the traffic is hitting WAN.

                          If it is, then a pcap for the proper traffic on LAN.

                          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
                          • R
                            richardlhughes
                            last edited by

                            Does this satisfy the wan is seeing port 80. My WAN IP is x.x.176.180

                            db03b74f-a2df-4999-8fc0-2c1afe8f79ae-image.png

                            1 Reply Last reply Reply Quote 0
                            • DerelictD
                              Derelict LAYER 8 Netgate
                              last edited by Derelict

                              No. That's an outbound connection from your WAN 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 johnpoz

                                Its not that hard dude..

                                Can you see me .org

                                80towan.png

                                It shows closed because I don't have anything listening or forwarded.. But you can see the traffic gets there.

                                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

                                1 Reply Last reply Reply Quote 0
                                • R
                                  richardlhughes
                                  last edited by

                                  I am not seeing packets on port 80.

                                  Looks like my isp is blocking or something else is blocking unless I am missing something else.

                                  I have my cable modem plugged directly into my vmware server that is hosting the pfsense vm.

                                  1 Reply Last reply Reply Quote 0
                                  • R
                                    richardlhughes
                                    last edited by

                                    Just off the phone with suddenlink. Residential accounts are not able to open port 80. The same level of service for a business account for the same 1Gbps account is approximately 3x the cost. That is not reasonable.

                                    1 Reply Last reply Reply Quote 0
                                    • chpalmerC
                                      chpalmer
                                      last edited by

                                      What is the model of your cable modem? It is in bridge mode.. Correct?

                                      Triggering snowflakes one by one..
                                      Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                                      R 1 Reply Last reply Reply Quote 0
                                      • DerelictD
                                        Derelict LAYER 8 Netgate
                                        last edited by

                                        Quick google search says suddenlink pretty much sucks for this. Sorry.

                                        That's why we pcap. Nothing like making sure the traffic is actually on the wire before proceeding with additional troubleshooting.

                                        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
                                        • R
                                          richardlhughes @chpalmer
                                          last edited by

                                          @chpalmer

                                          Here is the version of modem I have.

                                          ARRIS DOCSIS 3.0 Touchstone WideBand Cable Modem
                                          HW_REV: 3
                                          VENDOR: ARRIS Group, Inc.
                                          BOOTR: 2.2.0.45
                                          SW_REV: 9.1.103S
                                          MODEL: CM3200A

                                          chpalmerC 1 Reply Last reply Reply Quote 0
                                          • chpalmerC
                                            chpalmer @richardlhughes
                                            last edited by

                                            @richardlhughes said in opening ports on firewall:

                                            @chpalmer

                                            Here is the version of modem I have.

                                            ARRIS DOCSIS 3.0 Touchstone WideBand Cable Modem
                                            MODEL: CM3200A

                                            I didn't catch your post right before I asked. Can you use port 88 instead?

                                            Triggering snowflakes one by one..
                                            Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

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