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    Suddenly hit from lots of different places today.

    Scheduled Pinned Locked Moved IT Discussion
    securityhackbrute forceattack
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    • travisdh1T
      travisdh1 @travisdh1
      last edited by

      @travisdh1 said in Suddenly hit from lots of different places today.:

      @RojoLoco said in Suddenly hit from lots of different places today.:

      In Soviet Russia, IP address blocks you!

      How'd you know it's the Russians?

      Who just happened to start at 8:21AM EST...... cluestick anybody?

      1 Reply Last reply Reply Quote 0
      • AmbarishrhA
        Ambarishrh
        last edited by Ambarishrh

        We use ConfigServer Firewall/ CSF on all our servers (CentOS7 now, previously was on CentOS6)

        Its a Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection and Security application for Linux servers. It is based on IP tables and very well block a decent level of attacks. Our CSF logs regularly blocks (first temporarily for some time and then if attack/invalid connection attempt continues then permenant block) and we get notified.

        Few details from an email i received today! 🙂

        109.111.112.178 (AD/Andorra/mx2.andorsoft.ad) blocked for port scanning
        Time: Wed Nov 9 20:56:53 2016 +0400
        IP: 109.111.112.178 (AD/Andorra/mx2.andorsoft.ad)
        Hits: 11
        Blocked: Temporary Block

        22.117.160.65 (TW/Taiwan/122-117-160-65.HINET-IP.hinet.net) blocked for port scanning
        Time: Wed Nov 9 18:53:12 2016 +0400
        IP: 122.117.160.65 (TW/Taiwan/122-117-160-65.HINET-IP.hinet.net)
        Hits: 11
        Blocked: Permanent Block

        CSF has also option to block the entire country, however they warn that using country-level filtering will negatively impact performance and you will notice slower response times on your websites. This is due to the sheer size of the CIDR range lists (the list for the U.S. is 621K in plain text and contains more than 37,000 entries) and the fact that the firewall must check each incoming IP address against the chosen list(s).

        Another feature i really like is the option to perform a basic security, stability and settings. A sample screenshot of a server check. Green ones are ok the the pink ones to be fixed.

        XyqiBmx.png

        On the latest version it even has an option to send scheduled reports on this security check as new versions could have more checks.

        travisdh1T 1 Reply Last reply Reply Quote 0
        • RojoLocoR
          RojoLoco @travisdh1
          last edited by

          @travisdh1 said in Suddenly hit from lots of different places today.:

          @RojoLoco said in Suddenly hit from lots of different places today.:

          In Soviet Russia, IP address blocks you!

          How'd you know it's the Russians?

          Because you said

          @travisdh1 said in Suddenly hit from lots of different places today.:

          8:45AM 31.8.66.206 User:demo
          8:45AM 46.33.250.164 User:demo

          Looking like Ukraine and Russia for the most part.

          Plus that joke wouldn't work if the attackers were in Alsace-Lorraine or Burkina Faso.

          1 Reply Last reply Reply Quote 1
          • travisdh1T
            travisdh1 @Ambarishrh
            last edited by

            @Ambarishrh I saw that, doesn't really give me anything beyond what cPHulk is doing already. Might have to try it on some local systems tho.

            AmbarishrhA 1 Reply Last reply Reply Quote 0
            • dafyreD
              dafyre
              last edited by

              I'd just K-Line the whole /16 subnet and be done with it and see if that slows it down.

              MattSpellerM travisdh1T 2 Replies Last reply Reply Quote 1
              • MattSpellerM
                MattSpeller @dafyre
                last edited by

                @dafyre said in Suddenly hit from lots of different places today.:

                I'd just K-Line

                I suspect that you may be unaware of the meaning that phrase has elsewhere lol

                dafyreD 1 Reply Last reply Reply Quote 1
                • dafyreD
                  dafyre @MattSpeller
                  last edited by

                  @MattSpeller said in Suddenly hit from lots of different places today.:

                  @dafyre said in Suddenly hit from lots of different places today.:

                  I'd just K-Line

                  I suspect that you may be unaware of the meaning that phrase has elsewhere lol

                  Wow. That's just sad. Guess I'll be expecting a visit from the FBI or NSA in a bit.

                  K-LINE is an old school IRC terminology. Was helping my old man with his IRC server today, lol.

                  K-LINE = block it forever... (on a Linux box, just use iptables, it's far, far easier).

                  1 Reply Last reply Reply Quote 2
                  • travisdh1T
                    travisdh1 @dafyre
                    last edited by

                    @dafyre said in Suddenly hit from lots of different places today.:

                    I'd just K-Line the whole /16 subnet and be done with it and see if that slows it down.

                    That's what I've been doing with cphulk. The number of different systems being used is a little crazy. At this point I'm just wondering if I'll ever be able to prove anything, even tho I'm almost certain it's a government agency behind it.

                    Example of cPHulk email:
                    alt text

                    Block the IANA Netblock and call it done.

                    1 Reply Last reply Reply Quote 1
                    • AmbarishrhA
                      Ambarishrh @travisdh1
                      last edited by

                      @travisdh1 said in Suddenly hit from lots of different places today.:

                      @Ambarishrh I saw that, doesn't really give me anything beyond what cPHulk is doing already. Might have to try it on some local systems tho.

                      cPHulk uses a MySQL database that does not use iptables in the manner CSF is using. It is more intensive to block using cPHulk due to the fact it blocks based on logging authentications to a MySQL database and then determining actions based on it. It is actually more streamlined and easier to manage CSF / LFD due to it dealing directly with iptables via flat files.

                      travisdh1T 1 Reply Last reply Reply Quote 1
                      • travisdh1T
                        travisdh1 @Ambarishrh
                        last edited by

                        @Ambarishrh said in Suddenly hit from lots of different places today.:

                        @travisdh1 said in Suddenly hit from lots of different places today.:

                        @Ambarishrh I saw that, doesn't really give me anything beyond what cPHulk is doing already. Might have to try it on some local systems tho.

                        cPHulk uses a MySQL database that does not use iptables in the manner CSF is using. It is more intensive to block using cPHulk due to the fact it blocks based on logging authentications to a MySQL database and then determining actions based on it. It is actually more streamlined and easier to manage CSF / LFD due to it dealing directly with iptables via flat files.

                        I grep that. I have been keeping an eye on performance, and we haven't seen any detrimental effects yet (the memory cache for the mysql instance is ~2x the db size currently.)

                        1 Reply Last reply Reply Quote 0
                        • travisdh1T
                          travisdh1
                          last edited by

                          For those interested in such things

                          0_1478721557353_upload-b18683f9-ac76-4b8a-ae2b-197d3b5dc645

                          1 Reply Last reply Reply Quote 0
                          • dafyreD
                            dafyre
                            last edited by

                            Are the attacks still ongoing today?

                            1 Reply Last reply Reply Quote 1
                            • travisdh1T
                              travisdh1
                              last edited by

                              Got this knocked down to one every half hour instead of once every five minutes by 5PM yesterday, and the last notification I got was at 6:02AM this morning, hopefully we're done with these..... silly.... people.

                              Some (hopefully) final numbers for you all.
                              0_1478785140922_upload-ffd74363-5686-46cf-a8cd-5d191f664664

                              0_1478785277894_upload-54aa2098-f090-4457-bd11-729adec288ea

                              They never even tried a valid user in addition to trying this on a service that responds as being active but then rejects all login attempts. Silly, silly people.

                              PS - I hope all the mods appreciate my self-moderation here 😉

                              dafyreD 1 Reply Last reply Reply Quote 2
                              • dafyreD
                                dafyre @travisdh1
                                last edited by

                                @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                travisdh1T 1 Reply Last reply Reply Quote 2
                                • travisdh1T
                                  travisdh1 @dafyre
                                  last edited by travisdh1

                                  @dafyre said in Suddenly hit from lots of different places today.:

                                  @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                  I know right 😕

                                  When I first started here, the website was hosted on a Windows Server VPS, so the administrator at least makes a little sense.

                                  Also, remote root login (the only one available because it's a VPS) is key based. So go ahead and try logging in as root with a password.

                                  stacksofplatesS 1 Reply Last reply Reply Quote 2
                                  • stacksofplatesS
                                    stacksofplates @travisdh1
                                    last edited by

                                    @travisdh1 said in Suddenly hit from lots of different places today.:

                                    @dafyre said in Suddenly hit from lots of different places today.:

                                    @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                    I know right 😕

                                    When I first started here, the website was hosted on a Windows Server VPS, so the administrator at least makes a little sense.

                                    Also, remote root login (the only one available because it's a VPS) is key based. So go ahead and try logging in as root with a password.

                                    Ha we can't log in with root at all over SSH.

                                    travisdh1T 1 Reply Last reply Reply Quote 0
                                    • travisdh1T
                                      travisdh1 @stacksofplates
                                      last edited by

                                      @stacksofplates said in Suddenly hit from lots of different places today.:

                                      @travisdh1 said in Suddenly hit from lots of different places today.:

                                      @dafyre said in Suddenly hit from lots of different places today.:

                                      @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                      I know right 😕

                                      When I first started here, the website was hosted on a Windows Server VPS, so the administrator at least makes a little sense.

                                      Also, remote root login (the only one available because it's a VPS) is key based. So go ahead and try logging in as root with a password.

                                      Ha we can't log in with root at all over SSH.

                                      While it's very tempting to do just that, the only user the system started with was root. If I have to burn it all down, I need some way to access the thing.

                                      stacksofplatesS 1 Reply Last reply Reply Quote 0
                                      • stacksofplatesS
                                        stacksofplates @travisdh1
                                        last edited by

                                        @travisdh1 said in Suddenly hit from lots of different places today.:

                                        @stacksofplates said in Suddenly hit from lots of different places today.:

                                        @travisdh1 said in Suddenly hit from lots of different places today.:

                                        @dafyre said in Suddenly hit from lots of different places today.:

                                        @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                        I know right 😕

                                        When I first started here, the website was hosted on a Windows Server VPS, so the administrator at least makes a little sense.

                                        Also, remote root login (the only one available because it's a VPS) is key based. So go ahead and try logging in as root with a password.

                                        Ha we can't log in with root at all over SSH.

                                        While it's very tempting to do just that, the only user the system started with was root. If I have to burn it all down, I need some way to access the thing.

                                        Ah ic. Do you not have console access?

                                        travisdh1T 1 Reply Last reply Reply Quote 0
                                        • travisdh1T
                                          travisdh1 @stacksofplates
                                          last edited by

                                          @stacksofplates said in Suddenly hit from lots of different places today.:

                                          @travisdh1 said in Suddenly hit from lots of different places today.:

                                          @stacksofplates said in Suddenly hit from lots of different places today.:

                                          @travisdh1 said in Suddenly hit from lots of different places today.:

                                          @dafyre said in Suddenly hit from lots of different places today.:

                                          @travisdh1 I'm totally shocked... not a single hit for root as the login name!

                                          I know right 😕

                                          When I first started here, the website was hosted on a Windows Server VPS, so the administrator at least makes a little sense.

                                          Also, remote root login (the only one available because it's a VPS) is key based. So go ahead and try logging in as root with a password.

                                          Ha we can't log in with root at all over SSH.

                                          While it's very tempting to do just that, the only user the system started with was root. If I have to burn it all down, I need some way to access the thing.

                                          Ah ic. Do you not have console access?

                                          I do, but the only user on the system was created after the OS/cPanel was installed. So if I have to nuke it from orbit, I kinda need that access.

                                          1 Reply Last reply Reply Quote 1
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