Connection Timed out on SSH Server
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}
I am using the internet server of university and trying to log in to my account on system from my laptop, using ssh -X username@server. It says connection timed out. when i tried from another system i was able to log in. i use system for pretty basic work and dont know much about the internal coding and all... From some of he pages online i think the problem is firewall or something similar.
I have checked the status for open ssh server which is shown as active. Kindly guide me through how to solve this problem.
networking server ssh
asked yesterday
jessica danishjessica danish
32
add a comment |
I am using the internet server of university and trying to log in to my account on system from my laptop, using ssh -X username@server. It says connection timed out. when i tried from another system i was able to log in. i use system for pretty basic work and dont know much about the internal coding and all... From some of he pages online i think the problem is firewall or something similar.
I have checked the status for open ssh server which is shown as active. Kindly guide me through how to solve this problem.
networking server ssh
asked yesterday
jessica danishjessica danish
32
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday
add a comment |
I am using the internet server of university and trying to log in to my account on system from my laptop, using ssh -X username@server. It says connection timed out. when i tried from another system i was able to log in. i use system for pretty basic work and dont know much about the internal coding and all... From some of he pages online i think the problem is firewall or something similar.
I have checked the status for open ssh server which is shown as active. Kindly guide me through how to solve this problem.
networking server ssh
asked yesterday
jessica danishjessica danish
32
I am using the internet server of university and trying to log in to my account on system from my laptop, using ssh -X username@server. It says connection timed out. when i tried from another system i was able to log in. i use system for pretty basic work and dont know much about the internal coding and all... From some of he pages online i think the problem is firewall or something similar.
I have checked the status for open ssh server which is shown as active. Kindly guide me through how to solve this problem.
networking server ssh
networking server ssh
asked yesterday
jessica danishjessica danish
32
asked yesterday
jessica danishjessica danish
32
asked yesterday
jessica danishjessica danish
32
asked yesterday
jessica danishjessica danish
32
asked yesterday
jessica danishjessica danish
32
32
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday
add a comment |
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday
add a comment |
2 Answers
2
active
oldest
votes
Install ufw It will handle the firewall.
This guide will help you go through the basics of firewalls.
https://www.linode.com/docs/security/firewalls/configure-firewall-with-ufw/
Run these commands on the ssh-server machine
sudo apt-get install ufw
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
These will get you through.
Let me know what happened.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
|
show 1 more comment
I believe your problem is with your ssh configuration, nothing to do with firewall for outgoing SSH session. See your /etc/ssh/ssh_config file and make sure you enable both the following:
ForwardX11 yes
ForwardX11Trusted yes
For some situation, you might have to turn off trusted mode for things to work (all depends on the SSH setup in your university.
ForwardX11Trusted no
Hope this helps.
(Edited)
In cases where you can't edit the configuration in /etc/ssh/ssh_config, copy the file to your home directory and modify it there.
mkdir $HOME/.ssh
cp /etc/ssh/ssh_config $HOME/.ssh/config
Modify ~/.ssh/config to enable X11 forwarding.
answered yesterday
Bernard WeiBernard Wei
975413
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory asmy.configmake the modification there and then launch it withssh -X -F my.config username@server
– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
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
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1133044%2fconnection-timed-out-on-ssh-server%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Install ufw It will handle the firewall.
This guide will help you go through the basics of firewalls.
https://www.linode.com/docs/security/firewalls/configure-firewall-with-ufw/
Run these commands on the ssh-server machine
sudo apt-get install ufw
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
These will get you through.
Let me know what happened.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
|
show 1 more comment
Install ufw It will handle the firewall.
This guide will help you go through the basics of firewalls.
https://www.linode.com/docs/security/firewalls/configure-firewall-with-ufw/
Run these commands on the ssh-server machine
sudo apt-get install ufw
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
These will get you through.
Let me know what happened.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
|
show 1 more comment
Install ufw It will handle the firewall.
This guide will help you go through the basics of firewalls.
https://www.linode.com/docs/security/firewalls/configure-firewall-with-ufw/
Run these commands on the ssh-server machine
sudo apt-get install ufw
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
These will get you through.
Let me know what happened.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Install ufw It will handle the firewall.
This guide will help you go through the basics of firewalls.
https://www.linode.com/docs/security/firewalls/configure-firewall-with-ufw/
Run these commands on the ssh-server machine
sudo apt-get install ufw
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
These will get you through.
Let me know what happened.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered yesterday
GodfatherGodfather
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered yesterday
GodfatherGodfather
65
answered yesterday
GodfatherGodfather
65
65
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Godfather is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
|
show 1 more comment
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
ufw is already working. and status is also active.
– jessica danish
yesterday
ufw is already working. and status is also active.
– jessica danish
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
what does the status show? when you press sudo ufw status is it something like 22/tcp ALLOW ANYWHERE
– Godfather
yesterday
That it is active.
– jessica danish
yesterday
That it is active.
– jessica danish
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
I can understand it's active but does it say that port 22 is allowed when you ask for the status?
– Godfather
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
yes it does. port 22 allowed anywhere.
– jessica danish
yesterday
|
show 1 more comment
I believe your problem is with your ssh configuration, nothing to do with firewall for outgoing SSH session. See your /etc/ssh/ssh_config file and make sure you enable both the following:
ForwardX11 yes
ForwardX11Trusted yes
For some situation, you might have to turn off trusted mode for things to work (all depends on the SSH setup in your university.
ForwardX11Trusted no
Hope this helps.
(Edited)
In cases where you can't edit the configuration in /etc/ssh/ssh_config, copy the file to your home directory and modify it there.
mkdir $HOME/.ssh
cp /etc/ssh/ssh_config $HOME/.ssh/config
Modify ~/.ssh/config to enable X11 forwarding.
answered yesterday
Bernard WeiBernard Wei
975413
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory asmy.configmake the modification there and then launch it withssh -X -F my.config username@server
– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
add a comment |
I believe your problem is with your ssh configuration, nothing to do with firewall for outgoing SSH session. See your /etc/ssh/ssh_config file and make sure you enable both the following:
ForwardX11 yes
ForwardX11Trusted yes
For some situation, you might have to turn off trusted mode for things to work (all depends on the SSH setup in your university.
ForwardX11Trusted no
Hope this helps.
(Edited)
In cases where you can't edit the configuration in /etc/ssh/ssh_config, copy the file to your home directory and modify it there.
mkdir $HOME/.ssh
cp /etc/ssh/ssh_config $HOME/.ssh/config
Modify ~/.ssh/config to enable X11 forwarding.
answered yesterday
Bernard WeiBernard Wei
975413
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory asmy.configmake the modification there and then launch it withssh -X -F my.config username@server
– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
add a comment |
I believe your problem is with your ssh configuration, nothing to do with firewall for outgoing SSH session. See your /etc/ssh/ssh_config file and make sure you enable both the following:
ForwardX11 yes
ForwardX11Trusted yes
For some situation, you might have to turn off trusted mode for things to work (all depends on the SSH setup in your university.
ForwardX11Trusted no
Hope this helps.
(Edited)
In cases where you can't edit the configuration in /etc/ssh/ssh_config, copy the file to your home directory and modify it there.
mkdir $HOME/.ssh
cp /etc/ssh/ssh_config $HOME/.ssh/config
Modify ~/.ssh/config to enable X11 forwarding.
answered yesterday
Bernard WeiBernard Wei
975413
I believe your problem is with your ssh configuration, nothing to do with firewall for outgoing SSH session. See your /etc/ssh/ssh_config file and make sure you enable both the following:
ForwardX11 yes
ForwardX11Trusted yes
For some situation, you might have to turn off trusted mode for things to work (all depends on the SSH setup in your university.
ForwardX11Trusted no
Hope this helps.
(Edited)
In cases where you can't edit the configuration in /etc/ssh/ssh_config, copy the file to your home directory and modify it there.
mkdir $HOME/.ssh
cp /etc/ssh/ssh_config $HOME/.ssh/config
Modify ~/.ssh/config to enable X11 forwarding.
answered yesterday
Bernard WeiBernard Wei
975413
edited 9 hours ago
answered yesterday
Bernard WeiBernard Wei
975413
answered yesterday
Bernard WeiBernard Wei
975413
answered yesterday
Bernard WeiBernard Wei
975413
975413
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory asmy.configmake the modification there and then launch it withssh -X -F my.config username@server
– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
add a comment |
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory asmy.configmake the modification there and then launch it withssh -X -F my.config username@server
– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
Thank you for your help. i think that is actually the problem, "ForwardX11 no" i found this in the file you mentioned, but it is not allowing for the editing. what i mean is i cant save it after editting. can you kindly guide me about that...
– jessica danish
16 hours ago
See if you can make a copy of the configuration file to your home directory as
my.config make the modification there and then launch it with ssh -X -F my.config username@server– Bernard Wei
10 hours ago
See if you can make a copy of the configuration file to your home directory as
my.config make the modification there and then launch it with ssh -X -F my.config username@server– Bernard Wei
10 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I have updated the answer on how to have a user specific configuration.
– Bernard Wei
9 hours ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
I tried the both methods. "~/.ssh/config" says permission denied and ssh -X -F my.config username@server is still connection timed out. Thank you for your time and kind help. i think i might be doing it the wrong way.
– jessica danish
1 hour ago
add a comment |
Thanks for contributing an answer to Ask Ubuntu!
- 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.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1133044%2fconnection-timed-out-on-ssh-server%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
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
Ubuntu 18.04. and connecting from with in university. and using the address provided by the officilas... the same address works if i am doing it through another system that has the same version of ubuntu.
– jessica danish
yesterday
i havent done anything to have firewall. "ufw" shows an active status, if thats related?
– jessica danish
yesterday