packet_write_wait: Connection to UNKNOWN port only with ProxyCommand











up vote
0
down vote

favorite












At work I have to connect through a gateway to reach the machines where our code is stored. My laptop is setup with Ubuntu 18.04. When I connect to the remote machine in two steps:



laptop: $ ssh login@gateway

gateway: $ ssh login@work_machine


it works fine. However, I have set my config file for ssh so that I can connect directly from my laptop, with the following content:



Host gateway

  Hostname gateway

  User login



Host machine_from_laptop

  Hostname work_machine

  User login

  Proxycommand ssh bdemoulin@gateway netcat -w1 %h %p %r


Now I can connect to the remote machine with:



ssh machine_from_laptop


But the problem, after 2-3 seconds, I am disconnected with the error message:



packet_write_wait: Connection to UNKNOWN port 65535


I have played with ServerAliveInterval or ServerAliveCountMax and TCPKeepAlive, with no effect... Also I don't have any access to server side parameters. What bothers me is that the disconnection only appears when I use the config file...



Does someone has any idea of what is wrong with the config ?






linux ssh







share|improve this question


























    up vote
    0
    down vote

    favorite












    At work I have to connect through a gateway to reach the machines where our code is stored. My laptop is setup with Ubuntu 18.04. When I connect to the remote machine in two steps:



    laptop: $ ssh login@gateway
    
gateway: $ ssh login@work_machine


    it works fine. However, I have set my config file for ssh so that I can connect directly from my laptop, with the following content:



    Host gateway
    
  Hostname gateway
    
  User login
    

    
Host machine_from_laptop
    
  Hostname work_machine
    
  User login
    
  Proxycommand ssh bdemoulin@gateway netcat -w1 %h %p %r


    Now I can connect to the remote machine with:



    ssh machine_from_laptop


    But the problem, after 2-3 seconds, I am disconnected with the error message:



    packet_write_wait: Connection to UNKNOWN port 65535


    I have played with ServerAliveInterval or ServerAliveCountMax and TCPKeepAlive, with no effect... Also I don't have any access to server side parameters. What bothers me is that the disconnection only appears when I use the config file...



    Does someone has any idea of what is wrong with the config ?






    linux ssh







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      At work I have to connect through a gateway to reach the machines where our code is stored. My laptop is setup with Ubuntu 18.04. When I connect to the remote machine in two steps:



      laptop: $ ssh login@gateway
      
gateway: $ ssh login@work_machine


      it works fine. However, I have set my config file for ssh so that I can connect directly from my laptop, with the following content:



      Host gateway
      
  Hostname gateway
      
  User login
      

      
Host machine_from_laptop
      
  Hostname work_machine
      
  User login
      
  Proxycommand ssh bdemoulin@gateway netcat -w1 %h %p %r


      Now I can connect to the remote machine with:



      ssh machine_from_laptop


      But the problem, after 2-3 seconds, I am disconnected with the error message:



      packet_write_wait: Connection to UNKNOWN port 65535


      I have played with ServerAliveInterval or ServerAliveCountMax and TCPKeepAlive, with no effect... Also I don't have any access to server side parameters. What bothers me is that the disconnection only appears when I use the config file...



      Does someone has any idea of what is wrong with the config ?






      linux ssh







      share|improve this question













      At work I have to connect through a gateway to reach the machines where our code is stored. My laptop is setup with Ubuntu 18.04. When I connect to the remote machine in two steps:



      laptop: $ ssh login@gateway
      
gateway: $ ssh login@work_machine


      it works fine. However, I have set my config file for ssh so that I can connect directly from my laptop, with the following content:



      Host gateway
      
  Hostname gateway
      
  User login
      

      
Host machine_from_laptop
      
  Hostname work_machine
      
  User login
      
  Proxycommand ssh bdemoulin@gateway netcat -w1 %h %p %r


      Now I can connect to the remote machine with:



      ssh machine_from_laptop


      But the problem, after 2-3 seconds, I am disconnected with the error message:



      packet_write_wait: Connection to UNKNOWN port 65535


      I have played with ServerAliveInterval or ServerAliveCountMax and TCPKeepAlive, with no effect... Also I don't have any access to server side parameters. What bothers me is that the disconnection only appears when I use the config file...



      Does someone has any idea of what is wrong with the config ?






      linux ssh




      linux ssh






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 8 at 13:17









      bdem

      12




      12





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          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: 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
          });


          }
          });














           

          draft saved


          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53208565%2fpacket-write-wait-connection-to-unknown-port-only-with-proxycommand%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          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%2fstackoverflow.com%2fquestions%2f53208565%2fpacket-write-wait-connection-to-unknown-port-only-with-proxycommand%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

          Schultheiß

          Image
          Der Titel dieses Artikels ist mehrdeutig. Weitere Bedeutungen sind unter Schultheiß (Begriffsklärung) aufgeführt. Ein Schultheiß. Holzschnitt von Peter Flötner (16. Jahrhundert) Der Schultheiß oder Schuldheiß (von althochdeutsch  sculdheizo ‚Leistung Befehlender‘, vgl. mittelniederdeutsch  schult(h)ēte , latinisiert (mittellat.) sculte(t)us , schwäbisch heute noch Schultes für „Bürgermeister“) bezeichnet einen in vielen westgermanischen Rechtsordnungen vorgesehenen Beamten, der Schuld heischt : Er hatte im Auftrag seines Herren (Landesherrn, Stadtherrn, Grundherrn) die Mitglieder einer Gemeinde zur Leistung ihrer Schuldigkeit anzuhalten, also Abgaben einzuziehen oder für das Beachten anderer Verpflichtungen Sorge zu tragen. Sprachliche Varianten des Schultheißen sind Schulte , Schultes oder Schulze . Früher wurde zwischen dem Stadtschulzen und dem Dorfschulzen unterschieden. In der städtischen Gerichts- und Gemeindeverfassung war er ein vom städtischen Rat oder vom L
          Read more

          Liste der Kulturdenkmale in Wilsdruff

          Image
          Wappen von Wilsdruff Die Liste der Kulturdenkmale in Wilsdruff enthält die Kulturdenkmale in Wilsdruff. Die Anmerkungen sind zu beachten. Diese Liste ist eine Teilliste der Liste der Kulturdenkmale im Landkreis Sächsische Schweiz-Osterzgebirge. Diese Liste ist eine Teilliste der Liste der Kulturdenkmale in Sachsen. Inhaltsverzeichnis 1 Legende 2 Wilsdruff 3 Birkenhain 4 Blankenstein 5 Braunsdorf 6 Grumbach 7 Grund 8 Helbigsdorf 9 Herzogswalde 10 Kaufbach 11 Kesselsdorf 12 Kleinopitz 13 Limbach 14 Mohorn 15 Oberhermsdorf 16 Anmerkungen 17 Ausführliche Denkmaltexte 18 Quellen 19 Weblinks Legende | Bild: zeigt ein Bild des Kulturdenkmals und gegebenenfalls einen Link zu weiteren Fotos des Kulturdenkmals Bezeichnung: Name, Bezeichnung oder die Art des Kulturdenkmals Lage: Straßenname und wenn vorhanden Hausnummer des Kulturdenkmals; Grundsortierung der Liste erfolgt nach dieser A
          Read more

          Android Play Services Check

          Image
          up vote 0 down vote favorite Im facing a problem currently im making my app to run on t.v its working fine on mobiles. but the issue is if i run my app on t.v emulator splash screen appears then the app crashes log shows this error. No acceptable module found. Local version is 0 and remote version is 0 i googled this error and came with a solution that my emulator should have latest google play services installed in it.. but in my t.v emulator there is no play store so i cant update my play services to latest version. so is there any way to make a check that if play services version is less then this so run the app instead of crashing, and if the play services version is latest also run the aap... here is my code where im getting the play services version.. int playServicesAvailable = GoogleApiAvailability.g
          Read more