SSH tunnel to browse localhost, super slow











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To visit sites/services like jupyter notebooks and rstudio-server on my server I make a ssh tunnel and then just browse them in my webbrowser on my local machine, however, since yesterday, all my services are loading so slow in my browser.
Not sure why or where to even start the troubleshooting. I can ssh into the server and look at file etc. I even tried reinstall one of the services yesterday before I realized that all of my services were slow...
Any ideas or recommendations how to troubleshoot this?



Can also add that if I manage to connect to one services (only manage to connect to deluge) in the browser, it seems that once i'm connected the service runs without delays in the browsers. So seems that it's "just" the connecting that takes forever. (several mins)
Can also add that the ports are open on both my remote and local machine.



I just now realized that in my terminal I get the following message:



channel 3: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 4: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused


The command I used to open up the tunnel:



ssh -N -f -L 8787:localhost:8787 myNick@192.168.1.xx









share|improve this question


















  • 2




    From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
    – Ljm Dullaart
    Dec 5 at 12:29










  • @LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
    – Jesper.Lindberg
    Dec 5 at 13:09










  • @LjmDullaart If you want you can add that as a reply and I will accept your solution.
    – Jesper.Lindberg
    Dec 5 at 16:51















up vote
0
down vote

favorite












To visit sites/services like jupyter notebooks and rstudio-server on my server I make a ssh tunnel and then just browse them in my webbrowser on my local machine, however, since yesterday, all my services are loading so slow in my browser.
Not sure why or where to even start the troubleshooting. I can ssh into the server and look at file etc. I even tried reinstall one of the services yesterday before I realized that all of my services were slow...
Any ideas or recommendations how to troubleshoot this?



Can also add that if I manage to connect to one services (only manage to connect to deluge) in the browser, it seems that once i'm connected the service runs without delays in the browsers. So seems that it's "just" the connecting that takes forever. (several mins)
Can also add that the ports are open on both my remote and local machine.



I just now realized that in my terminal I get the following message:



channel 3: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 4: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused


The command I used to open up the tunnel:



ssh -N -f -L 8787:localhost:8787 myNick@192.168.1.xx









share|improve this question


















  • 2




    From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
    – Ljm Dullaart
    Dec 5 at 12:29










  • @LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
    – Jesper.Lindberg
    Dec 5 at 13:09










  • @LjmDullaart If you want you can add that as a reply and I will accept your solution.
    – Jesper.Lindberg
    Dec 5 at 16:51













up vote
0
down vote

favorite









up vote
0
down vote

favorite











To visit sites/services like jupyter notebooks and rstudio-server on my server I make a ssh tunnel and then just browse them in my webbrowser on my local machine, however, since yesterday, all my services are loading so slow in my browser.
Not sure why or where to even start the troubleshooting. I can ssh into the server and look at file etc. I even tried reinstall one of the services yesterday before I realized that all of my services were slow...
Any ideas or recommendations how to troubleshoot this?



Can also add that if I manage to connect to one services (only manage to connect to deluge) in the browser, it seems that once i'm connected the service runs without delays in the browsers. So seems that it's "just" the connecting that takes forever. (several mins)
Can also add that the ports are open on both my remote and local machine.



I just now realized that in my terminal I get the following message:



channel 3: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 4: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused


The command I used to open up the tunnel:



ssh -N -f -L 8787:localhost:8787 myNick@192.168.1.xx









share|improve this question













To visit sites/services like jupyter notebooks and rstudio-server on my server I make a ssh tunnel and then just browse them in my webbrowser on my local machine, however, since yesterday, all my services are loading so slow in my browser.
Not sure why or where to even start the troubleshooting. I can ssh into the server and look at file etc. I even tried reinstall one of the services yesterday before I realized that all of my services were slow...
Any ideas or recommendations how to troubleshoot this?



Can also add that if I manage to connect to one services (only manage to connect to deluge) in the browser, it seems that once i'm connected the service runs without delays in the browsers. So seems that it's "just" the connecting that takes forever. (several mins)
Can also add that the ports are open on both my remote and local machine.



I just now realized that in my terminal I get the following message:



channel 3: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 4: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused


The command I used to open up the tunnel:



ssh -N -f -L 8787:localhost:8787 myNick@192.168.1.xx






ssh-tunneling






share|improve this question













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asked Dec 5 at 11:11









Jesper.Lindberg

62




62








  • 2




    From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
    – Ljm Dullaart
    Dec 5 at 12:29










  • @LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
    – Jesper.Lindberg
    Dec 5 at 13:09










  • @LjmDullaart If you want you can add that as a reply and I will accept your solution.
    – Jesper.Lindberg
    Dec 5 at 16:51














  • 2




    From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
    – Ljm Dullaart
    Dec 5 at 12:29










  • @LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
    – Jesper.Lindberg
    Dec 5 at 13:09










  • @LjmDullaart If you want you can add that as a reply and I will accept your solution.
    – Jesper.Lindberg
    Dec 5 at 16:51








2




2




From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
– Ljm Dullaart
Dec 5 at 12:29




From the fact that just connecting takes a long time, I would suggest looking at your DNS set-up. Even though minutes for a faulty DNS is long, it might be one of the contributing factors. Look at DNS on both server and client side! You might also try 127.0.0.1 instead of localhost. Has any of the hosts enabled IPv6 recently?
– Ljm Dullaart
Dec 5 at 12:29












@LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
– Jesper.Lindberg
Dec 5 at 13:09




@LjmDullaart I'm not aware that any of the services has enabled IPv6. Chaning to 127.0.0.1 when opening the tunnel seems like it worked! Thanks!
– Jesper.Lindberg
Dec 5 at 13:09












@LjmDullaart If you want you can add that as a reply and I will accept your solution.
– Jesper.Lindberg
Dec 5 at 16:51




@LjmDullaart If you want you can add that as a reply and I will accept your solution.
– Jesper.Lindberg
Dec 5 at 16:51










1 Answer
1






active

oldest

votes

















up vote
2
down vote













In general, when session set-up is slow, but once the session runs it has acceptable speed, the first thing to look at is the hostname resolution. There are many issues that could cause problems:




  • A server and/or DNS suddenly starts using IPv6

  • Faulty DNS

  • Changes in /etc/hosts

  • etc.


Using 127.0.0.1 instead of the hostname bypasses most of these problems (but does not solve them!)






share|improve this answer





















  • Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
    – Jesper.Lindberg
    Dec 7 at 14:20










  • At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
    – Ljm Dullaart
    Dec 7 at 19:53










  • Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
    – Jesper.Lindberg
    Dec 7 at 21:50











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
2
down vote













In general, when session set-up is slow, but once the session runs it has acceptable speed, the first thing to look at is the hostname resolution. There are many issues that could cause problems:




  • A server and/or DNS suddenly starts using IPv6

  • Faulty DNS

  • Changes in /etc/hosts

  • etc.


Using 127.0.0.1 instead of the hostname bypasses most of these problems (but does not solve them!)






share|improve this answer





















  • Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
    – Jesper.Lindberg
    Dec 7 at 14:20










  • At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
    – Ljm Dullaart
    Dec 7 at 19:53










  • Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
    – Jesper.Lindberg
    Dec 7 at 21:50















up vote
2
down vote













In general, when session set-up is slow, but once the session runs it has acceptable speed, the first thing to look at is the hostname resolution. There are many issues that could cause problems:




  • A server and/or DNS suddenly starts using IPv6

  • Faulty DNS

  • Changes in /etc/hosts

  • etc.


Using 127.0.0.1 instead of the hostname bypasses most of these problems (but does not solve them!)






share|improve this answer





















  • Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
    – Jesper.Lindberg
    Dec 7 at 14:20










  • At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
    – Ljm Dullaart
    Dec 7 at 19:53










  • Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
    – Jesper.Lindberg
    Dec 7 at 21:50













up vote
2
down vote










up vote
2
down vote









In general, when session set-up is slow, but once the session runs it has acceptable speed, the first thing to look at is the hostname resolution. There are many issues that could cause problems:




  • A server and/or DNS suddenly starts using IPv6

  • Faulty DNS

  • Changes in /etc/hosts

  • etc.


Using 127.0.0.1 instead of the hostname bypasses most of these problems (but does not solve them!)






share|improve this answer












In general, when session set-up is slow, but once the session runs it has acceptable speed, the first thing to look at is the hostname resolution. There are many issues that could cause problems:




  • A server and/or DNS suddenly starts using IPv6

  • Faulty DNS

  • Changes in /etc/hosts

  • etc.


Using 127.0.0.1 instead of the hostname bypasses most of these problems (but does not solve them!)







share|improve this answer












share|improve this answer



share|improve this answer










answered Dec 6 at 19:27









Ljm Dullaart

57517




57517












  • Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
    – Jesper.Lindberg
    Dec 7 at 14:20










  • At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
    – Ljm Dullaart
    Dec 7 at 19:53










  • Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
    – Jesper.Lindberg
    Dec 7 at 21:50


















  • Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
    – Jesper.Lindberg
    Dec 7 at 14:20










  • At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
    – Ljm Dullaart
    Dec 7 at 19:53










  • Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
    – Jesper.Lindberg
    Dec 7 at 21:50
















Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
– Jesper.Lindberg
Dec 7 at 14:20




Okay, however I do have 127.0.0.1 localhost.localdomain localhost entry in /etc/hosts and can't find any other problems with my DNS?
– Jesper.Lindberg
Dec 7 at 14:20












At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
– Ljm Dullaart
Dec 7 at 19:53




At the client side but also at the server-side? Has 127.0.0.1 been assigned with the hostname as well (shouldn't be, but some installations do that) , either at server or at the client? (just another option that is part of the 'etc.' at the end of the list)
– Ljm Dullaart
Dec 7 at 19:53












Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
– Jesper.Lindberg
Dec 7 at 21:50




Without doing anything really, it seems to work fine even with localhost now. Also that localhost entry was on the server-side.
– Jesper.Lindberg
Dec 7 at 21:50


















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