cannot log in to the server after changing SSH port












3















I am using putty to connect to my Ubuntu 16.04 VPS.



I decided to change the default SSH port from 22 to 443.
I did this changing the line



Port 22


in /etc/ssh/sshd_config



to Port 443



Now when I am trying to connect to the server using port 443 I get the error saying "Server unexpectedly closed network connection"



When I try to connect to the server using port 22 I get the error saying "Network error: Connection refused"



The server is up and running I just cannot connect to it anymore, is there anyway to fix this?










share|improve this question







New contributor




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

























    3















    I am using putty to connect to my Ubuntu 16.04 VPS.



    I decided to change the default SSH port from 22 to 443.
    I did this changing the line



    Port 22


    in /etc/ssh/sshd_config



    to Port 443



    Now when I am trying to connect to the server using port 443 I get the error saying "Server unexpectedly closed network connection"



    When I try to connect to the server using port 22 I get the error saying "Network error: Connection refused"



    The server is up and running I just cannot connect to it anymore, is there anyway to fix this?










    share|improve this question







    New contributor




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























      3












      3








      3








      I am using putty to connect to my Ubuntu 16.04 VPS.



      I decided to change the default SSH port from 22 to 443.
      I did this changing the line



      Port 22


      in /etc/ssh/sshd_config



      to Port 443



      Now when I am trying to connect to the server using port 443 I get the error saying "Server unexpectedly closed network connection"



      When I try to connect to the server using port 22 I get the error saying "Network error: Connection refused"



      The server is up and running I just cannot connect to it anymore, is there anyway to fix this?










      share|improve this question







      New contributor




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












      I am using putty to connect to my Ubuntu 16.04 VPS.



      I decided to change the default SSH port from 22 to 443.
      I did this changing the line



      Port 22


      in /etc/ssh/sshd_config



      to Port 443



      Now when I am trying to connect to the server using port 443 I get the error saying "Server unexpectedly closed network connection"



      When I try to connect to the server using port 22 I get the error saying "Network error: Connection refused"



      The server is up and running I just cannot connect to it anymore, is there anyway to fix this?







      ubuntu networking ssh linux-networking port






      share|improve this question







      New contributor




      shiu'sho 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




      shiu'sho 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






      New contributor




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









      asked 8 hours ago









      shiu'shoshiu'sho

      161




      161




      New contributor




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





      New contributor





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






      shiu'sho 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


















          5















          is there anyway to fix this?





          • Use the system console (out of band connection) if available.

          • Use the VPS recovery boot to mount the VPS disk and then edit the sshd_config file to reset the port to 22 from 443.


          Less optimally




          • Boot a new VPS instance, configure as per the first instance using your configuration management tools and recover from backups.






          share|improve this answer























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "2"
            };
            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',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            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
            });


            }
            });






            shiu'sho 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%2fserverfault.com%2fquestions%2f957543%2fcannot-log-in-to-the-server-after-changing-ssh-port%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









            5















            is there anyway to fix this?





            • Use the system console (out of band connection) if available.

            • Use the VPS recovery boot to mount the VPS disk and then edit the sshd_config file to reset the port to 22 from 443.


            Less optimally




            • Boot a new VPS instance, configure as per the first instance using your configuration management tools and recover from backups.






            share|improve this answer




























              5















              is there anyway to fix this?





              • Use the system console (out of band connection) if available.

              • Use the VPS recovery boot to mount the VPS disk and then edit the sshd_config file to reset the port to 22 from 443.


              Less optimally




              • Boot a new VPS instance, configure as per the first instance using your configuration management tools and recover from backups.






              share|improve this answer


























                5












                5








                5








                is there anyway to fix this?





                • Use the system console (out of band connection) if available.

                • Use the VPS recovery boot to mount the VPS disk and then edit the sshd_config file to reset the port to 22 from 443.


                Less optimally




                • Boot a new VPS instance, configure as per the first instance using your configuration management tools and recover from backups.






                share|improve this answer














                is there anyway to fix this?





                • Use the system console (out of band connection) if available.

                • Use the VPS recovery boot to mount the VPS disk and then edit the sshd_config file to reset the port to 22 from 443.


                Less optimally




                • Boot a new VPS instance, configure as per the first instance using your configuration management tools and recover from backups.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 8 hours ago









                IainIain

                105k13164258




                105k13164258






















                    shiu'sho is a new contributor. Be nice, and check out our Code of Conduct.










                    draft saved

                    draft discarded


















                    shiu'sho is a new contributor. Be nice, and check out our Code of Conduct.













                    shiu'sho is a new contributor. Be nice, and check out our Code of Conduct.












                    shiu'sho is a new contributor. Be nice, and check out our Code of Conduct.
















                    Thanks for contributing an answer to Server Fault!


                    • 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%2fserverfault.com%2fquestions%2f957543%2fcannot-log-in-to-the-server-after-changing-ssh-port%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

                    Усть-Каменогорск

                    Халкинская богословская школа

                    Высокополье (Харьковская область)