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    How to prevent OPT nets from accessing LAN nets

    Scheduled Pinned Locked Moved Firewalling
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by

      No you do not have to add a rule on lan..

      So when you cleared your states, you then looked and there was no state?

      I have rules that block traffic just like that !, that rule says you can go where ever you want as long as not 192.168.1.0/?  Whatever your lan network is… So you might have a problem with your alias, did you renumber lan net?

      Try putting in the rule with specific network 192.168.1.0/? your mask is and reset your states.

      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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      • P
        pfcode
        last edited by

        @johnpoz:

        No you do not have to add a rule on lan..

        So when you cleared your states, you then looked and there was no state?

        I have rules that block traffic just like that !, that rule says you can go where ever you want as long as not 192.168.1.0/?  Whatever your lan network is… So you might have a problem with your alias, did you renumber lan net?

        Try putting in the rule with specific network 192.168.1.0/? your mask is and reset your states.

        Thanks. changed to 192.168.1.0/24, and reset states, worked. Now, How do I know what "LAN net" is wrong, since its pre-defined, which I never touch it??

        Release: pfSense 2.4.3(amd64)
        M/B: Supermicro A1SRi-2558F
        HDD: Intel X25-M 160G
        RAM: 2x8Gb Kingston ECC ValueRAM
        AP: Netgear R7000 (XWRT), Unifi AC Pro

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        • KOMK
          KOM
          last edited by

          LAN net should be literally your LAN network as it is defined.  Your LAN is 192.168.1.0 and OPT1 is 192.168.2.0… did you happen to use a /16 mask or something weird like that?

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            If you renumber it, and didn't reboot maybe its holding the original 192.168.0/24 I believe..  But I have never ever seen that..

            Off the top I do not know how to view that the current values of those macro's are..  Have to look into how you would do that.. If there is a way??

            I would prob just reboot and then try your rule with lan net..  you can for sure see that the rule actually is with

            pfctl -sr

            either from the command under diag, or if you ssh to pfsense, etc.  Or actually at the console.

            The rules there list that actual networks and not the name..  so for example

            I have a rule that says allow in on ipv4 and v6 (see attached) allow

            But when I look at the actual rules I see this

            pass in quick on em2 inet proto udp from 192.168.2.0/24 to <ntpsrv>port = ntp keep state label "USER_RULE: Allow NTP"
            pass in quick on em2 inet6 proto udp from 2001:<snipped>:2::/64 to <ntpsrv>port = ntp keep state label "USER_RULE: Allow NTP"

            Which are my actual networks on my WLAN net both ipv4 and ipv6

            edit:
            KOM's idea of wrong mask could also be why it was allowed.  But as above you can always validate what your gui rules are exactly with the above command.  Your aliases will popup what they are in the gui if you put a mouse over them… But variables like Lan net or Lan Address do not do that.

            rulesnames.png
            rulesnames.png_thumb</ntpsrv></snipped></ntpsrv>

            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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            • P
              pfcode
              last edited by

              @KOM:

              LAN net should be literally your LAN network as it is defined.  Your LAN is 192.168.1.0 and OPT1 is 192.168.2.0… did you happen to use a /16 mask or something weird like that?

              No. I didn't.  but where should I look into it?

              Release: pfSense 2.4.3(amd64)
              M/B: Supermicro A1SRi-2558F
              HDD: Intel X25-M 160G
              RAM: 2x8Gb Kingston ECC ValueRAM
              AP: Netgear R7000 (XWRT), Unifi AC Pro

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                In your interface settings..

                easy way would be status, interfaces would show you the mask on your interfaces.  Or Interfaces, then click into say lan and or your opt interface and where you set the IP you would see the 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

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                • P
                  pfcode
                  last edited by

                  @johnpoz:

                  If you renumber it, and didn't reboot maybe its holding the original 192.168.0/24 I believe..  But I have never ever seen that..

                  Off the top I do not know how to view that the current values of those macro's are..  Have to look into how you would do that.. If there is a way??

                  I would prob just reboot and then try your rule with lan net..  you can for sure see that the rule actually is with

                  pfctl -sr

                  either from the command under diag, or if you ssh to pfsense, etc.  Or actually at the console.

                  The rules there list that actual networks and not the name..  so for example

                  I have a rule that says allow in on ipv4 and v6 (see attached) allow

                  But when I look at the actual rules I see this

                  pass in quick on em2 inet proto udp from 192.168.2.0/24 to <ntpsrv>port = ntp keep state label "USER_RULE: Allow NTP"
                  pass in quick on em2 inet6 proto udp from 2001:<snipped>:2::/64 to <ntpsrv>port = ntp keep state label "USER_RULE: Allow NTP"

                  Which are my actual networks on my WLAN net both ipv4 and ipv6

                  edit:
                  KOM's idea of wrong mask could also be why it was allowed.  But as above you can always validate what your gui rules are exactly with the above command.  Your aliases will popup what they are in the gui if you put a mouse over them… But variables like Lan net or Lan Address do not do that.</ntpsrv></snipped></ntpsrv>

                  Serious issue now.  As long as I changed back to ! Lan net, I can access my NAS again. and I don't see anything wrong when I ran "pfctl -sr"

                  Release: pfSense 2.4.3(amd64)
                  M/B: Supermicro A1SRi-2558F
                  HDD: Intel X25-M 160G
                  RAM: 2x8Gb Kingston ECC ValueRAM
                  AP: Netgear R7000 (XWRT), Unifi AC Pro

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                  • P
                    pfcode
                    last edited by

                    @johnpoz:

                    In your interface settings..

                    easy way would be status, interfaces would show you the mask on your interfaces.  Or Interfaces, then click into say lan and or your opt interface and where you set the IP you would see the mask..

                    Here you go:

                    Firewallissue.PNG
                    Firewallissue.PNG_thumb

                    Release: pfSense 2.4.3(amd64)
                    M/B: Supermicro A1SRi-2558F
                    HDD: Intel X25-M 160G
                    RAM: 2x8Gb Kingston ECC ValueRAM
                    AP: Netgear R7000 (XWRT), Unifi AC Pro

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      So when you ran the -sr what did you see for the rule when you put in ! lan net?

                      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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                      • P
                        pfcode
                        last edited by

                        @johnpoz:

                        So when you ran the -sr what did you see for the rule when you put in ! lan net?

                        Using ! Lan net:  (10.10.10.1 was auto added by pfBlockerNG as the DNSBL Virtual IP)

                        
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = http label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = https label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = ssh label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = http label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = https label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = ssh label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        pass in quick on igb2 inet from any to ! 192.168.1.0/24 flags S/SA keep state label "USER_RULE: 10/100Mbps LAN"
                        pass in quick on igb2 inet from any to ! 10.10.10.1 flags S/SA keep state label "USER_RULE: 10/100Mbps LAN"
                        
                        

                        Using !192.168.1.0/24:

                        
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = http label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = https label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto tcp from 192.168.2.0/24 to (self) port = ssh label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = http label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = https label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        block return in quick on igb2 inet proto udp from 192.168.2.0/24 to (self) port = ssh label "USER_RULE: Disallow OPT to access webGUI, SSH"
                        pass in quick on igb2 inet from any to ! 192.168.1.0/24 flags S/SA keep state label "USER_RULE: 10/100Mbps LAN"
                        
                        

                        Release: pfSense 2.4.3(amd64)
                        M/B: Supermicro A1SRi-2558F
                        HDD: Intel X25-M 160G
                        RAM: 2x8Gb Kingston ECC ValueRAM
                        AP: Netgear R7000 (XWRT), Unifi AC Pro

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                        • P
                          pfcode
                          last edited by

                          I'm just thinking that it could be the issue caused by pfBlockerNG DNSBL Virtual IP?

                          pass in quick on igb2 inet from any to ! 192.168.1.0/24 flags S/SA keep state label "USER_RULE: 10/100Mbps LAN"
                          pass in quick on igb2 inet from any to ! 10.10.10.1 flags S/SA keep state label "USER_RULE: 10/100Mbps LAN"

                          Release: pfSense 2.4.3(amd64)
                          M/B: Supermicro A1SRi-2558F
                          HDD: Intel X25-M 160G
                          RAM: 2x8Gb Kingston ECC ValueRAM
                          AP: Netgear R7000 (XWRT), Unifi AC Pro

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                          • P
                            pfcode
                            last edited by

                            Further discuss goes to here: https://forum.pfsense.org/index.php?topic=106742.0

                            Release: pfSense 2.4.3(amd64)
                            M/B: Supermicro A1SRi-2558F
                            HDD: Intel X25-M 160G
                            RAM: 2x8Gb Kingston ECC ValueRAM
                            AP: Netgear R7000 (XWRT), Unifi AC Pro

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