What is the ssh command PubkeyAuthentication=false?
I need to understand what the PubkeyAuthentication=false actually is doing in the following command:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Is it turning off the PubkeyAuthentication?
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
linux ssh
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
add a comment |
I need to understand what the PubkeyAuthentication=false actually is doing in the following command:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Is it turning off the PubkeyAuthentication?
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
linux ssh
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of thesshcommand? If the explanation of the optionPubkeyAuthenticationwas not clear for you, can you edit your question to indicate what exactly was not clear?
– Saaru Lindestøkke
Feb 6 at 16:53
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07
add a comment |
I need to understand what the PubkeyAuthentication=false actually is doing in the following command:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Is it turning off the PubkeyAuthentication?
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
linux ssh
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
I need to understand what the PubkeyAuthentication=false actually is doing in the following command:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Is it turning off the PubkeyAuthentication?
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
linux ssh
linux ssh
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
edited Feb 6 at 17:25
Saaru Lindestøkke
82021133
82021133
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
asked Feb 6 at 16:36
Jim GesserJim Gesser
61
61
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of thesshcommand? If the explanation of the optionPubkeyAuthenticationwas not clear for you, can you edit your question to indicate what exactly was not clear?
– Saaru Lindestøkke
Feb 6 at 16:53
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07
add a comment |
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of thesshcommand? If the explanation of the optionPubkeyAuthenticationwas not clear for you, can you edit your question to indicate what exactly was not clear?
– Saaru Lindestøkke
Feb 6 at 16:53
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of the
ssh command? If the explanation of the option PubkeyAuthentication was not clear for you, can you edit your question to indicate what exactly was not clear?– Saaru Lindestøkke
Feb 6 at 16:53
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of the
ssh command? If the explanation of the option PubkeyAuthentication was not clear for you, can you edit your question to indicate what exactly was not clear?– Saaru Lindestøkke
Feb 6 at 16:53
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07
add a comment |
2 Answers
2
active
oldest
votes
You are on the client machine, connecting to aSSH server. When you specify -o PubkeyAuthentication=false you are telling the server you DO NOT support ssh-key auth for that session.
SSH servers are most commonly setup to be accessed with a ssh-key or via password authentication. (Other methods are available)
If you want to use ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost> on the client session, that server will need to support Password authentication. If the server does NOT support password authentication and you specify -o PubkeyAuthentication=false The server will fallback to any other authentication method available.
If the server has Password Auth disabled an PubkeyAuth enabled, you will not be able to connect using your SSH arguments.
edited Feb 6 at 17:59
JakeGould
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
add a comment |
When you pass PubkeyAuthentication it enables or disables the general SSH public key authentication for that use and on that host. As explained on the documentation for ssh_config options states:
Specifies whether to try public key authentication. The argument to this keyword must be yes (the default) or no.
But in the command you provide, it seems that false is set:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Which might work, but am unsure. Would assume it should be no instead. But in your question you ask:
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
Most likely if this is in a test procedure—and someone developed those tests—then they wanted to force the SSH connection to not used SSH keys for authentication but rather use some other method; most likely a plain old password being typed in.
As for why that would be desired? Who knows. Without the context of the larger test context, nobody here can say. But I said what I said and based on what I know that line should not work since false is a literally false option.
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
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%2fsuperuser.com%2fquestions%2f1402757%2fwhat-is-the-ssh-command-pubkeyauthentication-false%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
You are on the client machine, connecting to aSSH server. When you specify -o PubkeyAuthentication=false you are telling the server you DO NOT support ssh-key auth for that session.
SSH servers are most commonly setup to be accessed with a ssh-key or via password authentication. (Other methods are available)
If you want to use ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost> on the client session, that server will need to support Password authentication. If the server does NOT support password authentication and you specify -o PubkeyAuthentication=false The server will fallback to any other authentication method available.
If the server has Password Auth disabled an PubkeyAuth enabled, you will not be able to connect using your SSH arguments.
edited Feb 6 at 17:59
JakeGould
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
add a comment |
You are on the client machine, connecting to aSSH server. When you specify -o PubkeyAuthentication=false you are telling the server you DO NOT support ssh-key auth for that session.
SSH servers are most commonly setup to be accessed with a ssh-key or via password authentication. (Other methods are available)
If you want to use ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost> on the client session, that server will need to support Password authentication. If the server does NOT support password authentication and you specify -o PubkeyAuthentication=false The server will fallback to any other authentication method available.
If the server has Password Auth disabled an PubkeyAuth enabled, you will not be able to connect using your SSH arguments.
edited Feb 6 at 17:59
JakeGould
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
add a comment |
You are on the client machine, connecting to aSSH server. When you specify -o PubkeyAuthentication=false you are telling the server you DO NOT support ssh-key auth for that session.
SSH servers are most commonly setup to be accessed with a ssh-key or via password authentication. (Other methods are available)
If you want to use ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost> on the client session, that server will need to support Password authentication. If the server does NOT support password authentication and you specify -o PubkeyAuthentication=false The server will fallback to any other authentication method available.
If the server has Password Auth disabled an PubkeyAuth enabled, you will not be able to connect using your SSH arguments.
edited Feb 6 at 17:59
JakeGould
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
You are on the client machine, connecting to aSSH server. When you specify -o PubkeyAuthentication=false you are telling the server you DO NOT support ssh-key auth for that session.
SSH servers are most commonly setup to be accessed with a ssh-key or via password authentication. (Other methods are available)
If you want to use ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost> on the client session, that server will need to support Password authentication. If the server does NOT support password authentication and you specify -o PubkeyAuthentication=false The server will fallback to any other authentication method available.
If the server has Password Auth disabled an PubkeyAuth enabled, you will not be able to connect using your SSH arguments.
edited Feb 6 at 17:59
JakeGould
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
edited Feb 6 at 17:59
JakeGould
32.1k1098141
edited Feb 6 at 17:59
JakeGould
32.1k1098141
edited Feb 6 at 17:59
JakeGould
32.1k1098141
32.1k1098141
answered Feb 6 at 17:47
sudosudo
111
answered Feb 6 at 17:47
sudosudo
111
answered Feb 6 at 17:47
sudosudo
111
111
add a comment |
add a comment |
When you pass PubkeyAuthentication it enables or disables the general SSH public key authentication for that use and on that host. As explained on the documentation for ssh_config options states:
Specifies whether to try public key authentication. The argument to this keyword must be yes (the default) or no.
But in the command you provide, it seems that false is set:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Which might work, but am unsure. Would assume it should be no instead. But in your question you ask:
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
Most likely if this is in a test procedure—and someone developed those tests—then they wanted to force the SSH connection to not used SSH keys for authentication but rather use some other method; most likely a plain old password being typed in.
As for why that would be desired? Who knows. Without the context of the larger test context, nobody here can say. But I said what I said and based on what I know that line should not work since false is a literally false option.
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
add a comment |
When you pass PubkeyAuthentication it enables or disables the general SSH public key authentication for that use and on that host. As explained on the documentation for ssh_config options states:
Specifies whether to try public key authentication. The argument to this keyword must be yes (the default) or no.
But in the command you provide, it seems that false is set:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Which might work, but am unsure. Would assume it should be no instead. But in your question you ask:
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
Most likely if this is in a test procedure—and someone developed those tests—then they wanted to force the SSH connection to not used SSH keys for authentication but rather use some other method; most likely a plain old password being typed in.
As for why that would be desired? Who knows. Without the context of the larger test context, nobody here can say. But I said what I said and based on what I know that line should not work since false is a literally false option.
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
add a comment |
When you pass PubkeyAuthentication it enables or disables the general SSH public key authentication for that use and on that host. As explained on the documentation for ssh_config options states:
Specifies whether to try public key authentication. The argument to this keyword must be yes (the default) or no.
But in the command you provide, it seems that false is set:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Which might work, but am unsure. Would assume it should be no instead. But in your question you ask:
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
Most likely if this is in a test procedure—and someone developed those tests—then they wanted to force the SSH connection to not used SSH keys for authentication but rather use some other method; most likely a plain old password being typed in.
As for why that would be desired? Who knows. Without the context of the larger test context, nobody here can say. But I said what I said and based on what I know that line should not work since false is a literally false option.
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
When you pass PubkeyAuthentication it enables or disables the general SSH public key authentication for that use and on that host. As explained on the documentation for ssh_config options states:
Specifies whether to try public key authentication. The argument to this keyword must be yes (the default) or no.
But in the command you provide, it seems that false is set:
ssh -X -o PubkeyAuthentication=false notadmin@<DedicatedHost>
Which might work, but am unsure. Would assume it should be no instead. But in your question you ask:
This is in a test procedure for to test Access Control and I am trying to understand what the is doing to by pass the PubkeyAuthentication.
Most likely if this is in a test procedure—and someone developed those tests—then they wanted to force the SSH connection to not used SSH keys for authentication but rather use some other method; most likely a plain old password being typed in.
As for why that would be desired? Who knows. Without the context of the larger test context, nobody here can say. But I said what I said and based on what I know that line should not work since false is a literally false option.
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
edited Feb 6 at 17:58
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
answered Feb 6 at 17:34
JakeGouldJakeGould
32.1k1098141
32.1k1098141
add a comment |
add a comment |
Thanks for contributing an answer to Super User!
- 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%2fsuperuser.com%2fquestions%2f1402757%2fwhat-is-the-ssh-command-pubkeyauthentication-false%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
Hi and welcome to Superuser! It is expected that you do some research first before posting a question. Have you, for example, read the manual of the
sshcommand? If the explanation of the optionPubkeyAuthenticationwas not clear for you, can you edit your question to indicate what exactly was not clear?– Saaru Lindestøkke
Feb 6 at 16:53
It is not a command, with -o you specify options used for this specific invocation overwriting the Config file or defaults
– eckes
Feb 8 at 21:07