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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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    • B
      bchan @KOM
      last edited by bchan

      @KOM
      Screenshot_2019-10-11 asus kleaders - Firewall Rules WAN2.png
      Screenshot_2019-10-11 asus kleaders - Firewall Rules Floating.png

      Thanks in advance for your assistances.

      NogBadTheBadN 1 Reply Last reply Reply Quote 0
      • NogBadTheBadN
        NogBadTheBad @bchan
        last edited by

        @bchan

        You've posted the same screenshot twice

        Andy

        1 x Netgate SG-4860 - 3 x Linksys LGS308P - 1 x Aruba InstantOn AP22

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

          @NogBadTheBad Thank u for pointing out. Pic corrected.

          1 Reply Last reply Reply Quote 0
          • 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

                B 2 Replies Last reply Reply Quote 0
                • 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.

                  1 Reply Last reply Reply Quote 0
                  • 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.

                    B 1 Reply Last reply Reply Quote 0
                    • 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

                      1 Reply Last reply Reply Quote 0
                      • 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

                        1 Reply Last reply Reply Quote 0
                        • 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.

                          1 Reply Last reply Reply Quote 0
                          • 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

                              1 Reply Last reply Reply Quote 0
                              • 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

                                  1 Reply Last reply Reply Quote 0
                                  • 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.

                                        1 Reply Last reply Reply Quote 0
                                        • 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!

                                          B 1 Reply Last reply Reply Quote 0
                                          • 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

                                            1 Reply Last reply Reply Quote 0
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