can iptables or BPF be used to detect and drop replay attack traffic?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
0
down vote

favorite












I would like to drop traffic that is 'old' and 'seen before' i.e replay attack. For example if someone uses tcpdump/wireshark to capture a 5min chunk of data and replays it in loop. The traffic is valid in that its payload conforms to what the server expects and destination is valid service port. But if it's old and see before i want to drop it before it reaches the server.



Can this be done with iptables/bpf ?



Using a the packets signature or timestamp field perhaps or marking the packet and storing in conntrack for some time which is checked etc...



Before going down the userspace or kernel module path i wanted to check if this can be done now.



thanks.






security iptables firewall netfilter






share

























    up vote
    0
    down vote

    favorite












    I would like to drop traffic that is 'old' and 'seen before' i.e replay attack. For example if someone uses tcpdump/wireshark to capture a 5min chunk of data and replays it in loop. The traffic is valid in that its payload conforms to what the server expects and destination is valid service port. But if it's old and see before i want to drop it before it reaches the server.



    Can this be done with iptables/bpf ?



    Using a the packets signature or timestamp field perhaps or marking the packet and storing in conntrack for some time which is checked etc...



    Before going down the userspace or kernel module path i wanted to check if this can be done now.



    thanks.






    security iptables firewall netfilter






    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I would like to drop traffic that is 'old' and 'seen before' i.e replay attack. For example if someone uses tcpdump/wireshark to capture a 5min chunk of data and replays it in loop. The traffic is valid in that its payload conforms to what the server expects and destination is valid service port. But if it's old and see before i want to drop it before it reaches the server.



      Can this be done with iptables/bpf ?



      Using a the packets signature or timestamp field perhaps or marking the packet and storing in conntrack for some time which is checked etc...



      Before going down the userspace or kernel module path i wanted to check if this can be done now.



      thanks.






      security iptables firewall netfilter






      share













      I would like to drop traffic that is 'old' and 'seen before' i.e replay attack. For example if someone uses tcpdump/wireshark to capture a 5min chunk of data and replays it in loop. The traffic is valid in that its payload conforms to what the server expects and destination is valid service port. But if it's old and see before i want to drop it before it reaches the server.



      Can this be done with iptables/bpf ?



      Using a the packets signature or timestamp field perhaps or marking the packet and storing in conntrack for some time which is checked etc...



      Before going down the userspace or kernel module path i wanted to check if this can be done now.



      thanks.






      security iptables firewall netfilter




      security iptables firewall netfilter





      share












      share










      share



      share










      asked 2 mins ago









      Flo Woo

      13315




      13315

























          active

          oldest

          votes











          Your Answer







          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "106"
          ;
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function()
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled)
          StackExchange.using("snippets", function()
          createEditor();
          );

          else
          createEditor();

          );

          function createEditor()
          StackExchange.prepareEditor(
          heartbeatType: 'answer',
          convertImagesToLinks: false,
          noModals: false,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );













           

          draft saved


          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f475209%2fcan-iptables-or-bpf-be-used-to-detect-and-drop-replay-attack-traffic%23new-answer', 'question_page');

          );

          Post as a guest






















          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes















           

          draft saved


          draft discarded















































           


          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f475209%2fcan-iptables-or-bpf-be-used-to-detect-and-drop-replay-attack-traffic%23new-answer', 'question_page');

          );

          Post as a guest
































































          -

          Popular posts from this blog

          How to check contact read email or not when send email to Individual?

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
          Read more

          Displaying single band from multi-band raster using QGIS

          Image
          Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
          Read more

          How many registers does an x86_64 CPU actually have?

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
          Read more