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    DHCP requests across firewall

    Scheduled Pinned Locked Moved DHCP and DNS
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    • T
      technical ownage
      last edited by

      That's kind of funny, I distinctly mentioned the bogon block in another post.

      Anyways, I'll try that tonight. Makes sense though. Sorry for all this and thank you greatly!

      Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by

        Do you not having it logging the blocking of bogon?

        Here I turned on and - yup blocking.

        Yes you did mention it
        "right below block bogon networks."

        Picture is with 100,000 words!!! This is basic stuff it should of worked click click with normal set of rules, etc.  Even for a DMZ and yours is just a plain jane segment.  And who and the hell blocks bogon from their own private segment?  What do you think would be using bogon on your own network, which would never really work anyway..  And if your going to block it - why would you not log it?

        I missed that or this would of been over much sooner..

        Should prob put in ticket, if you enable relay they should prob do the same sort of rules when you enable dhcp server - this would be in front of bogon and allow it to work while still blocking bogon if you wanted, etc.

        enabledbogon.png
        enabledbogon.png_thumb

        An intelligent man is sometimes forced to be drunk to spend time with his fools
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        • T
          technical ownage
          last edited by

          Yeah, I apologize for my own incompetence. XD I've never had a problem blocking bogons so I overlooked it. I realize the stress this has caused, my sincerest apologies.

          Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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          • D
            doktornotor Banned
            last edited by

            @johnpoz:

            prob put in ticket, if you enable relay they should prob do the same sort of rules when you enable dhcp server - this would be in front of bogon and allow it to work while still blocking bogon if you wanted, etc.

            No need, already done: https://redmine.pfsense.org/issues/4558

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            • T
              technical ownage
              last edited by

              I'm on 2.1.5, by the way

              Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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              • D
                doktornotor Banned
                last edited by

                It's the same issue everywhere, 2.1.x or not. You just won't get any fix on 2.1.x

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  Yet more information that could of been provided - why are you not current 2.2.2 if just setting this up?  I would assume this was new setup trying to get a network to work with dhcp sounds like new install to me.

                  Yeah from that bug report looks like will be fixed in 2.2.3 that should help out the next guy with this sort of problem.

                  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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                  • T
                    technical ownage
                    last edited by

                    This was a newly set up windows dhcp server, so I was trying to transfer the DHCP load from pfSense to the windows server. Also, I didn't think the version would make much difference since this was a logistical problem. So is there no point in blocking bogons on internal networks? One of the guides I watched said it wouldn't make a difference, turns out it does!

                    Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      look at the table of what is in bogon - why would any of those networks be on your local network?  To be honest I don't really see much point in blocking them on the wan either ;)  Default rule is block on wan.  So blocking bogon would just be for ports that you have opened.  And bogon are not even routeable on the internet, etc.

                      They seem to cause way more problems then they are worth in blocking any sort of risk.  that 0.0.0.0/8 for example your seeing.  And there are some other networks in the ipv6 bogon that really legit for link local addressing.

                      As to your version of pfsense - its good idea to stay current.  They add nice stuff in every update, for example the listings of the rule that blocked in the logs ;)  2.2 has full resolver vs just forwarder for dns, etc.

                      As to dhcp load - I highly doubt that is a problem for pfsense..  But sure dhcp is better to run off your windows AD then pfsense.

                      While generally speaking yes if not a valid address shouldn't be allowed - but without real easy way to edit the list you can run into stuff that may or may not be "valid"  And the way they have it added to the rules there is really no way to put stuff in front of it, etc.

                      If you were really worried about blocking bogons, I would prob just grab the list and put in a alias and use that in a normal rule vs how they have bogon implemented in pfsense.

                      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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                      • T
                        technical ownage
                        last edited by

                        I tried 2.2 when that came out, but I was getting weird errors, so I just decided to wait a little while.

                        As for dhcp load, yeah that was the wrong word XD More.. Functionality? I just want to be authoritative over my domain (DNS, DHCP, etc.). Plus, windows AD is incredibly fun and interesting! Haha, I'm well aware of pfSense's power, it truly is a masterpiece!

                        Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          I agree if your running an AD then dns and dhcp should be by your AD not your router ;)

                          As to it being fun, that would be a matter of opinion.  While it has always been interesting, not sure I would use the word fun to describe MS products ;)  I have been admin of windows networks since before there was "domains" back when it was only 3.11 for "workgroups" and then went to NT 3.51 as server from OS2, etc.

                          As to your issues with 2.2 - where you blocking bogon on your lan interfaces? ;)

                          You really should move away from 2.1 and go to 2.2, unless you were in some critical production setup there is no reason not to be current.

                          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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                          • T
                            technical ownage
                            last edited by

                            Ha ha. In reality, most likely. But my problem was hardware, I believe. I'm going to try again and go into more depth soon. As for my current setup, when I try to switch between WAPs on each subnet, it only gives me a lease from the first subnet I joined and I also am unable to access the web. Is this a windows thing?

                            Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator
                              last edited by

                              What do you mean it gives you IP from the first subnet?  Why would you have Wireless on both segments?  Wireless should be its own segment.

                              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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                              • T
                                technical ownage
                                last edited by

                                Wireless device A connects to WAP on NetA and gets an IP from NetA scope. Wireless device A then switches to WAP on NetB but doesn't get a new IP from the NetB scope, it keeps the old NetA address.

                                One on each subnet so I can administer them differently (Content filtering and whatnot)

                                Its own segment? Is this good practice or absolutely necessary for this to work?

                                Also: I tried enabling Name Protection on the entire IPv4 region of the DHCP server, doesn't seem to have worked.

                                Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator
                                  last edited by

                                  So you just move to new wireless network, is this a different ssid?  Did you release the IP to get a new one?

                                  I have never in all my years of working with IT and networking ever seen anyone put bridged wireless on 2 different segments like your doing.. Its completely pointless!!

                                  Your wireless should be on its own segment plain and simple, or bridged to 1 of them.. It sure and the hell does not need to be on both.    Name protection??  Why do you think you need that??

                                  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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                                  • T
                                    technical ownage
                                    last edited by

                                    This is by no means a wireless bridge, unless I'm completely misunderstanding what a bridge is. These are two completely separate WAPs, on completely seperate subnets, with completely different SSIDs, with different purposes. And no, I didn't release it. The wireless device (IE: a cell phone) doesn't have release functionality and is not joined to the domain either.

                                    Name Protection -> So when I switch WAPs (and therefore switch subnets) the DHCP server gets rid of the duplicate entry so there aren't two devices with the same name (even though it is the same device).

                                    Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator
                                      last edited by

                                      It is bridged to you wired network is it not!  Wireless bridge..  AP, etc..

                                      There is NO point in having wireless on both of your wired segments.. Put them on 1 of them, or put them on its own which is more secure and then allows you to leverage firewall between your wireless and wired network

                                      Your not understanding what Name protection is ;) Its designed to remove non ad members that might register a name.  Not remove entry of box A ipaddress1 and replace it with ipaddress2

                                      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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                                      • T
                                        technical ownage
                                        last edited by

                                        I'll just renable the pfSense dhcp server on Net B and leave the windows dhcp for Net A, which is how it was prior to the relay and switching between WAPs worked just fine.

                                        Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator
                                          last edited by

                                          What you should be doing like any normal network would be to put your wifi on its own segment or just have it on 1 of your segments.

                                          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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                                          • T
                                            technical ownage
                                            last edited by

                                            I'd love to, but if all my wireless is on one network/segment, then I can't have custom content filtering per WAP. for example: One access point will have filters that block adult content, whereas the other will not for those spicey/naughty situations.

                                            Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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