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

    Continuous data traffic to WAN

    Scheduled Pinned Locked Moved General pfSense Questions
    43 Posts 10 Posters 5.7k 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.
    • A
      akuma1x
      last edited by akuma1x

      @dam034 If your switch is smart (managed) and your "Wifi AC point" supports VLANs and multiple SSIDs, you can easily separate all this traffic. You have to read up on how VLANs work, obviously...

      Jeff

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

        Multicast and broadcast don't pass a router in the first place... So you don't have to worry about it flooding your wan..

        As to your server and tvbox having to be in the same L2... Nonsense - you might not be able to use whatever broadcast/multicast discovery method your using now... But I stream stuff from my "server" to my TV every day all day and they are in different networks.

        If you want to see what kind of traffic your tvbox is spewing - just do a sniff (packet capture) on pfsense lan interface under the diag menu.

        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 1
        • A
          Alex Atkin UK
          last edited by Alex Atkin UK

          I still don't understand why you consider any of this a "problem".

          You will ALWAYS see traffic on the WAN, either from people probing your IP from the Internet, the PPPoE session to your ISP, or your IP address being refreshed over DHCP.

          As for the LAN, my LEDs flash day and night, the amount of bandwidth its actually doing is microscopic. It will have zero impact on your Internet speed and be immeasurably small on your LAN speed.

          Unless you have identified an actual issue with it causing problems on your LAN, blocking that traffic will only make using your devices more complicated as its there to make detecting devices on your LAN completely automatic.

          Even my main smart managed switch and pfSense itself broadcasts its own traffic as I have uPNP enabled (for specific IP addresses only). Its how these devices are designed to work.

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

            It's 2AM. Everyone's asleep but me. I am not chasing blinking LEDs.

            0_1552813809848_Untitled.mov.gif

            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)

            GertjanG 1 Reply Last reply Reply Quote 3
            • GertjanG
              Gertjan @Derelict
              last edited by

              @Derelict said in Continuous data traffic to WAN:

              It's 2AM. Everyone's asleep but me. I am not chasing blinking LEDs.

              0_1552813809848_Untitled.mov.gif

              It's morning here;,so I've been looking for an hour or so at your video : no red lights, all looks good to me ^^

              No "help me" PM's please. Use the forum, the community will thank you.
              Edit : and where are the logs ??

              JeGrJ 1 Reply Last reply Reply Quote 1
              • JeGrJ
                JeGr LAYER 8 Moderator @Gertjan
                last edited by

                @Gertjan said in Continuous data traffic to WAN:

                @Derelict said in Continuous data traffic to WAN:

                It's 2AM. Everyone's asleep but me. I am not chasing blinking LEDs.

                It's morning here;,so I've been looking for an hour or so at your video : no red lights, all looks good to me ^^

                Damn wanted to write the exact same thing :D

                Don't forget to upvote ๐Ÿ‘ those who kindly offered their time and brainpower to help you!

                If you're interested, I'm available to discuss details of German-speaking paid support (for companies) if needed.

                A 1 Reply Last reply Reply Quote 1
                • A
                  Alex Atkin UK @JeGr
                  last edited by

                  @JeGr I'm sat here trying to guess what each box is for. ;)

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

                    I'm sat here trying to guess what each box is for. ;)

                    Top down, left-to-right:

                    SG-4860 (Edge), Cable modem, MoCA bridge, VDSL modem
                    SG-5100 (tnsr), SG-4860 (Trex)
                    Brocade ICX6450-48 Layer 3 switch

                    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 2
                    • A
                      akuma1x
                      last edited by akuma1x

                      Hey @Derelict , can you please plug your OPT1 back in? I'm having trouble getting to your Plex server box...

                      Thanks!

                      ๐Ÿ˜‹

                      *** just kidding ***

                      Jeff

                      1 Reply Last reply Reply Quote 0
                      • dam034D
                        dam034
                        last edited by dam034

                        Thanks for your replies.

                        Seeing the states I understood the problem, if we want to consider this.

                        With old router, the LAN had this addresses: 192.168.100.0/24, so the broadcast address was 192.168.100.255
                        Now with pfsense, I changed the LAN addresses to 10.78.32.0/26, so the broadcast address is 10.78.32.63
                        I went to see the states and I noticed this particular:
                        pftab.png
                        The tv box has ip 10.78.32.34
                        I'm thinking the tv box continues to believe that the broadcast address ends with 255, as in old router, and not 64.
                        This explains that with old router, all LEDs were blinking (broadcast), and now with pfsense it isn't so because 10.78.32.255 is out of LAN, and then routed to the modem, which in turn routes to the Internet.

                        So I need to block the outgoing traffic to 10.78.32.255? Or I need more?

                        Thanks

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

                          No, you should set a consistent IP network, including netmask, on your network.

                          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

                            What? You don't run your router with a /26 mask, and clients on this network with a /24 mask?? Is that what you did?

                            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
                            • dam034D
                              dam034
                              last edited by

                              I configured the new network with /26 mask, but the tv box continues to send broadcast frames to 10.78.32.255, and I don't know why. It is a bit old (android 4.4.2).

                              I thought to add a new firewall rule, and indeed it works.
                              This is the LAN firewall:
                              pflan.png
                              In less than one minute, the firewall blocked 160KiB of noisy traffic.

                              Now the LEDs behaviour hasn't changed in the switch, but the noisy frames are no longer routed to the modem and to the Internet.

                              This is what I can do, and for now it works.

                              Thanks for the help!

                              A JKnottJ 2 Replies Last reply Reply Quote 0
                              • DerelictD
                                Derelict LAYER 8 Netgate
                                last edited by

                                If you are running /26 on pfSense everything on that segment should be in the same /26.

                                That is how you configure an IP network.

                                There is no second option.

                                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

                                  You need to fix the mask on the device, or have it update its dhcp lease so it gets the new mask

                                  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
                                  • A
                                    Alex Atkin UK @dam034
                                    last edited by

                                    @dam034 said in Continuous data traffic to WAN:

                                    Now the LEDs behaviour hasn't changed in the switch, but the noisy frames are no longer routed to the modem and to the Internet.

                                    I thought we had already come to the conclusion that the "noisy" frames already WEREN'T routed to the Internet, as its broadcast traffic!

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

                                      Its not going to route anywhere when the router thinks the IP is in its own network... But sure it could shove down its default gateway when its not an IP on is own interface... Ie is issue with a mismatched mask.

                                      But your correct if a true broadcast it shouldn't be routed.

                                      But odd things can happen when you run a network with clients having mismatched masks.

                                      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

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

                                        if pfSense has an interface subnet of 10.78.32.0/26 there is absolutely no way for it to know that 10.78.32.255 is a broadcast. The solution is to fix your network.

                                        If you have broken devices that assume /24, then use /24.

                                        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
                                        • stephenw10S
                                          stephenw10 Netgate Administrator
                                          last edited by

                                          Yeah, a device with something hardcoded to /24 is horrible but believable. Unfortunately.

                                          Steve

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

                                            What device is that that has a hard coded mask of 24... That is just freaking HORRIBLE!!! And it won't accept new mask with dhcp even if its interface has no place to set the mask..

                                            Here is what you do with such hardware - RETURN IT!!!! Or throw it a freak away! And never buy hardware from the company again, and spread the news on how shit the stuff is..

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