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    Had my pfSense been compromised?

    Scheduled Pinned Locked Moved Firewalling
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    • B
      bchan @JeGr
      last edited by

      @JeGr

      whois 103.240.140.10
      inetnum: 103.240.140.1 - 103.240.142.255
      netname: CTCL-HK
      descr: ClearDDoS Technologies
      country: HK

      It sounds like a web security company.

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      • JeGrJ
        JeGr LAYER 8 Moderator
        last edited by

        I'm talking about your alias. Not the IP.

        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.

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        • B
          bchan @JeGr
          last edited by

          @JeGr

          I have checked the table values for this alias and they all resolve correctly to 192.168.x.x

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          • JeGrJ
            JeGr LAYER 8 Moderator
            last edited by

            @bchan said in Had my pfSense been compromised?:

            all resolve correctly to 192.168.x.x

            LAPTOP-1CGD66U4 resolves to 192.168.x.x? Even on pfsense itself? Its resolvers?

            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.

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            • B
              bchan @JeGr
              last edited by

              @JeGr
              Screenshot_2019-10-11 asus kleaders - Diagnostics Tables.png

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              • B
                bchan @johnpoz
                last edited by

                @johnpoz said in Had my pfSense been compromised?:

                pfctl -vvsr

                pfctl -vvsr | grep 4294967295
                return nothing.

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  Then the rule was deleted, make sure your grep is working by using a ID in your command that you see when just looking at the output.

                  Are you currently seeing logs for this?

                  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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                  • B
                    bchan @johnpoz
                    last edited by

                    @johnpoz said in Had my pfSense been compromised?:

                    Then the rule was deleted, make sure your grep is working by using a ID in your command that you see when just looking at the output.

                    Are you currently seeing logs for this?

                    grep works for other id e.g. the teamviewer logger.
                    I have 2 WANs for months. This incident was the first time I saw incoming traffic to WAN2 and were logged.
                    As you can see from my rules, I don't have anything that will log incoming traffic for WAN2.

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                    • jimpJ
                      jimp Rebel Alliance Developer Netgate
                      last edited by

                      Do you have UPnP enabled? Do you have it set to use WAN2, and to log connections?

                      That's the most likely explanation.

                      Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

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                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        That would be my guess as well... You might be able to glean a bit more info by looking at the raw log in output.

                        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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                        • jimpJ
                          jimp Rebel Alliance Developer Netgate
                          last edited by

                          When I manually trigger something like that (for example, open Deluge, go into settings, and trigger a port test), I get a similar log message with a random-ish ID.

                          Since the UPnP rules don't have a description, and have random IDs, and are probably short-lived, they wouldn't have a visible description in the logs even if you caught them when they were active.

                          Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

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                          Do not Chat/PM for help!

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                          • B
                            bchan @jimp
                            last edited by bchan

                            @jimp said in Had my pfSense been compromised?:

                            Do you have UPnP enabled?

                            No I have not enabled UPnP.
                            Screenshot_20191012-105227.png

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator
                              last edited by johnpoz

                              That doesn't actually mean its not running - that is a wiget that can be edited to not show specific services.

                              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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                              • B
                                bchan @johnpoz
                                last edited by

                                @johnpoz
                                UPnP is not running:
                                Screenshot_20191012-184544.png

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                                • H
                                  hulleyrob @bchan
                                  last edited by

                                  @bchan hey dude, im interested in this as i saw exactly the same thing this morning, about 5 low ports opened by upnp and incoming UDP traffic however i now have no idea what opened them up. Do you have a PS4 on the network as its the only thing i can think that would do this?

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                                  • B
                                    bchan @hulleyrob
                                    last edited by

                                    @hulleyrob said in Had my pfSense been compromised?:

                                    Do you have a PS4 on the network as its the only thing i can think that would do this?

                                    I am running a small office and have no PS4 and have not enabled any uPnP.

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                                    • H
                                      hulleyrob @bchan
                                      last edited by

                                      @bchan ah ok i do have upnp enabled but have the same problem you are and cannot see after the even which computer opened up the ports just that there was a rule and its been deleted.

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                                      • johnpozJ
                                        johnpoz LAYER 8 Global Moderator
                                        last edited by johnpoz

                                        Which is exactly how upnp would work.. So it creates a rule to allow whatever was requested.. It then would delete that rule when request is removed.. So in the logs you would see just the rule ID..

                                        Look with sockstat do you see miniupnpd running? Vs just the status, could be process that didn't shutdown or something.. Also look to see if the ports used are listening 1900, and I think maybe even 2189 or 5351 could be used.

                                        here I enabled it for test

                                        [2.4.4-RELEASE][admin@sg4860.local.lan]/root: sockstat | grep miniupnpd
                                        root     miniupnpd  18015 4  tcp6   *:2189                *:*
                                        root     miniupnpd  18015 5  dgram  -> /var/run/logpriv
                                        root     miniupnpd  18015 6  tcp4   *:2189                *:*
                                        root     miniupnpd  18015 7  udp4   *:1900                *:*
                                        root     miniupnpd  18015 8  udp6   *:1900                *:*
                                        root     miniupnpd  18015 9  udp4   192.168.9.253:1920    *:*
                                        root     miniupnpd  18015 10 udp6   *:44710               *:*
                                        root     miniupnpd  18015 12 stream /var/run/php-fpm.socket
                                        root     miniupnpd  18015 13 stream /var/run/php-fpm.socket
                                        root     miniupnpd  18015 14 udp4   192.168.9.253:5351    *:*
                                        root     miniupnpd  18015 16 udp6   *:5351                *:*
                                        

                                        Then turned it off

                                        [2.4.4-RELEASE][admin@sg4860.local.lan]/root: sockstat | grep miniupnpd
                                        [2.4.4-RELEASE][admin@sg4860.local.lan]/root: 
                                        

                                        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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                                        • H
                                          hulleyrob @johnpoz
                                          last edited by

                                          @johnpoz is there any log or place i can look that would tell me what IP address requested the deleted rule to be added after the event?
                                          My poroblem isnt that upnp is enabled as that is required for multiple PS4's to work on my network but that I cannot tell what device caused the open ports and requested the upnp rules once they are deleted.

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                                          • johnpozJ
                                            johnpoz LAYER 8 Global Moderator
                                            last edited by

                                            Wouldn't the dest IP in the log tell you who opened it?

                                            I don't use UPnP... its horrible idea from a general security point of view.. When I did have it enabled for my sons playstation, the play station was on isolated vlan, and UPNP was restricted to only allow requests from his ps ip.. And also restricted in what ports could be allowed also - sure and the F do not need 53 inbound, or 88.. Its not doing freaking kerb inbound, etc..

                                            The lack of documentation in these game consoles and what is actually required is just horrific... How freaking hard is it to say game X needs ABC inbound, and EFG outbound..

                                            Some of them lists ports.. but then they don't call out if inbound or outbound or both, etc.. For example why would they need 80 inbound... This isn't even viable on many home connections because their isp AUP prevents running services and block such a port anyway, etc..

                                            So sorry off the top of my head I don't know that much about how its implemented in pfsense - other than not something I would suggest any one run ;)

                                            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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