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    Had my pfSense been compromised?

    Scheduled Pinned Locked Moved Firewalling
    79 Posts 11 Posters 15.9k Views
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    • A
      akuma1x
      last edited by akuma1x

      Nothing is coming in on WAN2, you have no pass rules there.

      What have you defined for that "Desktop" alias you've got in your Source column on the Floating Rules tab?

      Jeff

      B 1 Reply Last reply Reply Quote 0
      • B
        bchan @akuma1x
        last edited by

        @akuma1x
        Desktop contains list of desktop computers:
        Screenshot_2019-10-11 asus kleaders - Firewall Aliases Edit.png

        For sure it does not have the offending 103.240.140.10 in my first post.

        JeGrJ 1 Reply Last reply Reply Quote 0
        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by

          And what is that rule - just look it up via
          https://docs.netgate.com/pfsense/en/latest/firewall/viewing-the-full-pf-ruleset.html

          pfctl -vvsr

          Will show you rule ID numbers so you can match up rules with what your seeing.. Unless the rule has been deleted.. You can look in your config change history.

          changes.jpg

          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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          • B
            bchan
            last edited by

            I have gathered additional info on the port numbers:
            Ports.jpg

            These ports seem to be related to hostname, nameserver, smtp.

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            • JeGrJ
              JeGr LAYER 8 Moderator @bchan
              last edited by

              @bchan said in Had my pfSense been compromised?:

              For sure it does not have the offending 103.240.140.10 in my first post.

              Yes but it has your local FQDN. You sure that resolves correctly and not to some strange web IP? I'd never use local hostnames in Aliases.

              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 @johnpoz
                last edited by

                @johnpoz
                Nothing logged around that time (05:29):
                Screenshot_2019-10-11 asus kleaders - Diagnostics Backup Restore Config History.png

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  look in your full rule set for what that ID number matches up with.

                  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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                  • 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.

                      B 1 Reply Last reply Reply Quote 0
                      • 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.

                          B 1 Reply Last reply Reply Quote 0
                          • 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.

                              1 Reply Last reply Reply Quote 0
                              • 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 2.8, 24.11

                                B 1 Reply Last reply Reply Quote 0
                                • 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!

                                    Need help fast? Netgate Global Support!

                                    Do not Chat/PM for help!

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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 2.8, 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!

                                        Need help fast? Netgate Global Support!

                                        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 2.8, 24.11

                                            B 1 Reply Last reply Reply Quote 0
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