iptables blocking local traffic











up vote
1
down vote

favorite












My local machine IP: 192.168.0.35



What I did: Answer that i tried here!!



sudo iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80


The error:



Now I can not access any more IP's from my local machine and I do not know why it happened.



Any IP that is: 123.123.123.123, etc ... The result of any attempt is the default page "Apache2 Debian Default Page". Now I can't access my router page to make changes in port forwarding. I don't know how undo this iptables command.





What i want:



I was looking for a way to: Expose my Webserver, from the router on the Internet over port 80 and 443. Deploy httpd(apache2) on port 1337 and continue dev on 8000,8080. From my router to my Raspbian, I'm trying to:




INTERNET IPx:80,443<===>80,443 router <===> IP-local-web-httpd (raspbian):











share|improve this question









New contributor




Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
























    up vote
    1
    down vote

    favorite












    My local machine IP: 192.168.0.35



    What I did: Answer that i tried here!!



    sudo iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80


    The error:



    Now I can not access any more IP's from my local machine and I do not know why it happened.



    Any IP that is: 123.123.123.123, etc ... The result of any attempt is the default page "Apache2 Debian Default Page". Now I can't access my router page to make changes in port forwarding. I don't know how undo this iptables command.





    What i want:



    I was looking for a way to: Expose my Webserver, from the router on the Internet over port 80 and 443. Deploy httpd(apache2) on port 1337 and continue dev on 8000,8080. From my router to my Raspbian, I'm trying to:




    INTERNET IPx:80,443<===>80,443 router <===> IP-local-web-httpd (raspbian):











    share|improve this question









    New contributor




    Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      My local machine IP: 192.168.0.35



      What I did: Answer that i tried here!!



      sudo iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80


      The error:



      Now I can not access any more IP's from my local machine and I do not know why it happened.



      Any IP that is: 123.123.123.123, etc ... The result of any attempt is the default page "Apache2 Debian Default Page". Now I can't access my router page to make changes in port forwarding. I don't know how undo this iptables command.





      What i want:



      I was looking for a way to: Expose my Webserver, from the router on the Internet over port 80 and 443. Deploy httpd(apache2) on port 1337 and continue dev on 8000,8080. From my router to my Raspbian, I'm trying to:




      INTERNET IPx:80,443<===>80,443 router <===> IP-local-web-httpd (raspbian):











      share|improve this question









      New contributor




      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      My local machine IP: 192.168.0.35



      What I did: Answer that i tried here!!



      sudo iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80


      The error:



      Now I can not access any more IP's from my local machine and I do not know why it happened.



      Any IP that is: 123.123.123.123, etc ... The result of any attempt is the default page "Apache2 Debian Default Page". Now I can't access my router page to make changes in port forwarding. I don't know how undo this iptables command.





      What i want:



      I was looking for a way to: Expose my Webserver, from the router on the Internet over port 80 and 443. Deploy httpd(apache2) on port 1337 and continue dev on 8000,8080. From my router to my Raspbian, I'm trying to:




      INTERNET IPx:80,443<===>80,443 router <===> IP-local-web-httpd (raspbian):








      iptables port-forwarding ufw netfilter






      share|improve this question









      New contributor




      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited yesterday









      SouravGhosh

      371210




      371210






      New contributor




      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked yesterday









      Anderson Bosa

      61




      61




      New contributor




      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Anderson Bosa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















          1 Answer
          1






          active

          oldest

          votes

















          up vote
          0
          down vote













          Be careful using iptables command.



          To have access again you have to delete the iptables command you performed.



          So do with -D option and not -A to undo the command.



          sudo iptables -t nat -D OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80






          share|improve this answer





















            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: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });






            Anderson Bosa is a new contributor. Be nice, and check out our Code of Conduct.










            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f487949%2fiptables-blocking-local-traffic%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote













            Be careful using iptables command.



            To have access again you have to delete the iptables command you performed.



            So do with -D option and not -A to undo the command.



            sudo iptables -t nat -D OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80






            share|improve this answer

























              up vote
              0
              down vote













              Be careful using iptables command.



              To have access again you have to delete the iptables command you performed.



              So do with -D option and not -A to undo the command.



              sudo iptables -t nat -D OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80






              share|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                Be careful using iptables command.



                To have access again you have to delete the iptables command you performed.



                So do with -D option and not -A to undo the command.



                sudo iptables -t nat -D OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80






                share|improve this answer












                Be careful using iptables command.



                To have access again you have to delete the iptables command you performed.



                So do with -D option and not -A to undo the command.



                sudo iptables -t nat -D OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.35:80







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered yesterday









                Sylla

                603




                603






















                    Anderson Bosa is a new contributor. Be nice, and check out our Code of Conduct.










                    draft saved

                    draft discarded


















                    Anderson Bosa is a new contributor. Be nice, and check out our Code of Conduct.













                    Anderson Bosa is a new contributor. Be nice, and check out our Code of Conduct.












                    Anderson Bosa is a new contributor. Be nice, and check out our Code of Conduct.
















                    Thanks for contributing an answer to Unix & Linux Stack Exchange!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.





                    Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                    Please pay close attention to the following guidance:


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f487949%2fiptables-blocking-local-traffic%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    サソリ

                    広島県道265号伴広島線

                    Accessing regular linux commands in Huawei's Dopra Linux