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    pfSense Firewall Rules

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    • 1
      19Giugno
      last edited by

      Hi Kom,
      i am testing from outside the network, connected to the VPN and not. IBO_Web contains the IP address of the web server.

      Here some screenshots with some new configuration. I added a NAT entry for the OVPN, but still no luck. IP whitelisting is working, only allowed IPs can access the web server; but OVPN clients cannot. They are being rejected because of the "Default deny rule IPv4 (1000000103)" (from the firewall log). For some reasons even if connected to the VPN they hit the firewall with the machine public IP address. For example, the VPN public IP address is XX.XXX.XXX.XX, if I go to whatsmyip I see it correctly XX.XXX.XXX.XX, but in the firewall log the entry is YY.YYY.YYY.YY:80 TCP:S where YY.YYY.YYY.YY is my machin public IP address. Hope it makes sense...

      2_1551339950284_Nat.png 1_1551339950284_Rules_OVPN.png 0_1551339950283_Rules_Wan.png

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      • KOMK
        KOM
        last edited by

        What's in your Allowed_IBO alias? Can I assume that you are including the OVPN subnet in it?

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        • 1
          19Giugno
          last edited by

          It wasn't. I added it, but still doesn't work when connected to the VPN.

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          • KOMK
            KOM
            last edited by

            Hold on a sec. Your VPN users are already inside your network, therefore they should not be using the NAT in the first place. Add a host override to your DNS config so that it resolves your web server's hostname to its LAN IP address. Then they should just be able to connect without issue.

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            • 1
              19Giugno
              last edited by

              Kom, this is what I added to the DNS Resolver:

              Host Overrides
              bo-temp xxxx.com 192.168.22.3 DNS

              Still not working. If I ping 192.168.22.3 from my machine connected to the VPN, I get a response. If I ping bo-temp.xxxx.com it resolves with the network public IP address.

              GrimsonG 1 Reply Last reply Reply Quote 0
              • KOMK
                KOM
                last edited by

                This should be easy. You should be able to access your internal web server via the VPN without any magic. Let's start simple: Can you access it via its LAN IP address? eg http://192.168.22.3/?

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                • GrimsonG
                  Grimson Banned @19Giugno
                  last edited by

                  @19giugno said in pfSense Firewall Rules:

                  Still not working. If I ping 192.168.22.3 from my machine connected to the VPN, I get a response. If I ping bo-temp.xxxx.com it resolves with the network public IP address.

                  So what DNS is your machine using? For the DNS overrides to work it obviously has to use the DNS resolver/forwarder from the pfSense instance where the override is configured.

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                  • 1
                    19Giugno @KOM
                    last edited by

                    @kom said in pfSense Firewall Rules:

                    http://192.168.22.3/?

                    Yes I can.

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                    • 1
                      19Giugno @Grimson
                      last edited by

                      @grimson said in pfSense Firewall Rules:

                      @19giugno said in pfSense Firewall Rules:

                      Still not working. If I ping 192.168.22.3 from my machine connected to the VPN, I get a response. If I ping bo-temp.xxxx.com it resolves with the network public IP address.

                      So what DNS is your machine using? For the DNS overrides to work it obviously has to use the DNS resolver/forwarder from the pfSense instance where the override is configured.

                      Hi Grimson,
                      I am using assigned DNS (Obtain DNS server address automatically). I am not sure how to check if I am using the DNS resolver/forwarder? And how I can be sure to use it?

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                      • KOMK
                        KOM
                        last edited by

                        OK so your problem is DNS-related. Status - Services will tell you if you're using Forwarder (dnsmasq) or Resolver (unbound). Or you could go to Services - DNS Forwarder and see if it's enabled, likewise for Services - DNS Resolver.

                        It looks to me like you don't have your OpenVPN config quite right. In your config under Advanced Client Settings, are you pushing pfSense DNS to your VPN clients?

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                        • 1
                          19Giugno
                          last edited by

                          Hi KOM,
                          DNS Resolver is enabled, DNS Forwarder is not.

                          In OperVPN, Advanced Client Settings there is nothing enabled.

                          Thanks.

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                          • KOMK
                            KOM
                            last edited by

                            So then try checking the DNS Server Enable box and then add your pfSense LAN IP address as DNS Server 1.

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                            • 1
                              19Giugno @19Giugno
                              last edited by

                              @19giugno said in pfSense Firewall Rules:

                              Hi KOM,
                              DNS Resolver is enabled, DNS Forwarder is not.

                              In OperVPN, Advanced Client Settings there is nothing enabled.

                              Thanks.

                              Yes! That worked! It works now. Thank you so much!

                              I got another question now, if the answer is yes I will open a new thread: is it possible to have whitelist specific for websites? I mean, on the web server I have website A and website B. Can I define an alias to access only website A and another one website B?

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                              • KOMK
                                KOM
                                last edited by

                                Of course. You can specify the Source for any NAT you create. Create an alias for your whitelist and then use it as the Source in your NAT rule.

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                                • 1
                                  19Giugno
                                  last edited by

                                  Thanks KOM for your help and your patience.

                                  1 Reply Last reply Reply Quote 0
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