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    Block Communication between intefaces

    Scheduled Pinned Locked Moved Firewalling
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    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      I don't like that technique.

      Block traffic to LAN net then Pass traffic to any.

      IMHO traffic should not be "blocked" with a pass rule.

      Something like this might happen: https://redmine.pfsense.org/issues/6799

      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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      • KOMK
        KOM
        last edited by

        Thanks. I didn't know that was the preferred method now but it makes sense.

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        • N
          ncage
          last edited by

          @ptt:

          1 - Because  "WAN Net" != "internet"

          Can you be more explicit? I always thought of the WAN side of any router type device as the internet. Where is my understanding flawed?

          thanks

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          • N
            ncage
            last edited by

            @Derelict:

            I don't like that technique.

            Block traffic to LAN net then Pass traffic to any.

            IMHO traffic should not be "blocked" with a pass rule.

            Something like this might happen: https://redmine.pfsense.org/issues/6799

            From your description it sounds like the way i have it setup is just fine….

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            • DerelictD
              Derelict LAYER 8 Netgate
              last edited by

              Yes as long as the block rule is placed above the pass rule.

              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
                Nullity
                last edited by

                @ncage:

                @ptt:

                1 - Because  "WAN Net" != "internet"

                Can you be more explicit? I always thought of the WAN side of any router type device as the internet. Where is my understanding flawed?

                thanks

                WAN Net refers to the network (or single IP) that your WAN interface has.

                Usually it is your WAN IP, as assigned from your ISP. Some ISPs offer multiple IPs.

                Please correct any obvious misinformation in my posts.
                -Not a professional; an arrogant ignoramous.

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                • P
                  P3R
                  last edited by

                  @ncage:

                  Can you be more explicit? I always thought of the WAN side of any router type device as the internet. Where is my understanding flawed?

                  In a pass rule you can limit outgoing traffic to only a specific internet ip network and that is exactly what you do as the WAN Net is only the transit network leading to the rest of the internet. Your OPT1 clients would be able to send traffic to every node on the specific ip network that the WAN ip reside in but traffic with another destination address wouldn't be passed by that rule.

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                  • johnpozJ
                    johnpoz LAYER 8 Global Moderator
                    last edited by

                    "WAN Net is only the transit network leading to the rest of the internet."

                    Exactly!!!!! I really just do not how people confuse wan net with "internet"  It says Wan Net right in the name, not All other networks not local ;)

                    You can think of the wan as the internet, but you have to understand that your connected to the internet via a transit network.. Not the whole freaking internet ;)

                    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 2.7.2, 24.11

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                    • K
                      kpa
                      last edited by

                      Internet = networks interconnected by using other networks that serve as these "transit networks". That may be hard to picture in your mind at first but once you start thinking along the lines of how you would connect your own LAN network at your home to another LAN network at your friend's house (assuming it's just a matter of laying a cable between them) and take that idea to a larger scale with multiple networks it should start making sense.

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                      • H
                        Harvy66
                        last edited by

                        @johnpoz:

                        "WAN Net is only the transit network leading to the rest of the internet."

                        Exactly!!!!! I really just do not how people confuse wan net with "internet"  It says Wan Net right in the name, not All other networks not local ;)

                        You can think of the wan as the internet, but you have to understand that your connected to the internet via a transit network.. Not the whole freaking internet ;)

                        Being they use simplistic ideas of what's going on. They just memorize terms like "network" and assume it always means the exact same thing in all contexts until they run into an issue. I see the same thing all the time. Had a 10+ year storage admin who "knew" what thin provisioning meant, but didn't understand the implication when we said we needed to have a LUN backed by contiguous storage and gave us a thinly provisioned LUN. I wonder what the return policy is on a $200k SAN device that you've had for 2 months before you realized you can't control LUN layout.

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          "I wonder what the return policy is on a $200k SAN device that you've had for 2 months before you realized you can't control LUN layout."

                          hehehe oh that is funny… Did you pay for already?  Most companies float payment for atleast 90+ days ;)  Tell them it does not meet your requirements, and the person that ordered it has been flogged out back for it.. If they ever want any future business from you they will take it back or get the model that allows you to do what you want..

                          But I hear year, work with people that have been the field for years and years, and still don't get what amounts to basic concepts.. And then they are too scared to bring it up if having a discussion... So for example when you stated "we needed to have a LUN backed by contiguous storage" he could of just asked - and that means what exactly??

                          Been dealing quite a bit of late with just local switching stuff, and be amazed at how many people that have been doing it for years and years just don't quite grasp that a lagg or etherchannel/portchannel/etc  is not 1+1=2, but just 2 x 1 and 1, etc..  No specific device talking to another specific device across that will ever see more than 1, etc.

                          Had a whole augment with a architect how you can not replace a 6509 with a 4500x and some access switches in a stack.. And they were uplinking the stack to the 4500 with 1+1 lagg..  With no clue to what the intervlan traffic was and how that could be a bottleneck.. Their thought process was that the wan link is not even gig..  Sure if you wan to save some cost and there is NO intervlan traffic, then maybe.. Production facility you have to assume intervlan, and maybe quite a bit of it..  Atleast allow for each vlan to have an uplink so your not hairpinning, etc.

                          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 2.7.2, 24.11

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