How to install public key in host server





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My user from another server gave his public key to me and asked me to install this public key into my server so he can connect to my server. Did some research and I have to create a directory called .ssh and paste my user public key in a Notepad and save this text file into the .ssh directory. My question is does my research correct if so where and how I create this .ssh directory and the key file, is it in text file format? Do I have to pass any information like my key to the user? Btw, I’m using windows server 2012.






ssh windows-server-2012 openssh sftp







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  • 4





    If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

    – Martin Prikryl
    21 hours ago











  • What OS are you using?

    – Dave X
    14 hours ago











  • ... can do this on their own ... using ssh-copy-id for instance.

    – Bernhard Döbler
    14 hours ago











  • I’m using windows server 2012 @Dave X

    – xChaax
    10 hours ago


















3















My user from another server gave his public key to me and asked me to install this public key into my server so he can connect to my server. Did some research and I have to create a directory called .ssh and paste my user public key in a Notepad and save this text file into the .ssh directory. My question is does my research correct if so where and how I create this .ssh directory and the key file, is it in text file format? Do I have to pass any information like my key to the user? Btw, I’m using windows server 2012.






ssh windows-server-2012 openssh sftp







share|improve this question









New contributor




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
















  • 4





    If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

    – Martin Prikryl
    21 hours ago











  • What OS are you using?

    – Dave X
    14 hours ago











  • ... can do this on their own ... using ssh-copy-id for instance.

    – Bernhard Döbler
    14 hours ago











  • I’m using windows server 2012 @Dave X

    – xChaax
    10 hours ago














3












3








3


4






My user from another server gave his public key to me and asked me to install this public key into my server so he can connect to my server. Did some research and I have to create a directory called .ssh and paste my user public key in a Notepad and save this text file into the .ssh directory. My question is does my research correct if so where and how I create this .ssh directory and the key file, is it in text file format? Do I have to pass any information like my key to the user? Btw, I’m using windows server 2012.






ssh windows-server-2012 openssh sftp







share|improve this question









New contributor




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












My user from another server gave his public key to me and asked me to install this public key into my server so he can connect to my server. Did some research and I have to create a directory called .ssh and paste my user public key in a Notepad and save this text file into the .ssh directory. My question is does my research correct if so where and how I create this .ssh directory and the key file, is it in text file format? Do I have to pass any information like my key to the user? Btw, I’m using windows server 2012.






ssh windows-server-2012 openssh sftp




ssh windows-server-2012 openssh sftp






share|improve this question









New contributor




xChaax 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




xChaax 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








edited 10 hours ago







xChaax













New contributor




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









asked 22 hours ago









xChaaxxChaax

163




163




New contributor




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





New contributor





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






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








  • 4





    If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

    – Martin Prikryl
    21 hours ago











  • What OS are you using?

    – Dave X
    14 hours ago











  • ... can do this on their own ... using ssh-copy-id for instance.

    – Bernhard Döbler
    14 hours ago











  • I’m using windows server 2012 @Dave X

    – xChaax
    10 hours ago














  • 4





    If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

    – Martin Prikryl
    21 hours ago











  • What OS are you using?

    – Dave X
    14 hours ago











  • ... can do this on their own ... using ssh-copy-id for instance.

    – Bernhard Döbler
    14 hours ago











  • I’m using windows server 2012 @Dave X

    – xChaax
    10 hours ago








4




4





If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

– Martin Prikryl
21 hours ago





If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.

– Martin Prikryl
21 hours ago













What OS are you using?

– Dave X
14 hours ago





What OS are you using?

– Dave X
14 hours ago













... can do this on their own ... using ssh-copy-id for instance.

– Bernhard Döbler
14 hours ago





... can do this on their own ... using ssh-copy-id for instance.

– Bernhard Döbler
14 hours ago













I’m using windows server 2012 @Dave X

– xChaax
10 hours ago





I’m using windows server 2012 @Dave X

– xChaax
10 hours ago










1 Answer
1






active

oldest

votes


















12















  • The public key must go into authorized_keys file (not just to some text file) in the .ssh subfolder of user's home directory.


  • The public key entry must have a correct format like:



    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAir2cIHsAFg8QzLF6Yb... some optional comment


  • The authorized_keys file must use *nix line endings, what Notepad cannot do (so make sure your SFTP/FTP client uses ASCII transfer mode to convert the line endings)


  • The .ssh folder needs to have 700 permissions and the authorized_keys needs to have 600 permissions.


There are zillions of guides on the Internet that cover the above.

For example see my guide to Setting up SSH public key authentication in OpenSSH.




If the user is already a user on your server (has password [or other] authentication working), he/she can setup the public key on his/her own.




  • On *nix machines (or others that have OpenSSH available, what may include Windows), you can use ssh-copy-id script.

  • On Windows machines, you can use (my) WinSCP, with its Install Public Key into Server function.


See also my answer to Setting up public key authentication to Linux server from Windows (ppk private key).




You should provide your user a copy of the server's public host key, so that the user can verify it, when connecting for the first time (it's a separate from the authentication, what the rest of the question is about). Though many users just blindly accept the host key.






share|improve this answer


























  • Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

    – xChaax
    20 hours ago











  • See my updated answer.

    – Martin Prikryl
    20 hours ago






  • 4





    More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

    – user4556274
    15 hours ago











  • It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

    – Dave X
    29 mins ago












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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









12















  • The public key must go into authorized_keys file (not just to some text file) in the .ssh subfolder of user's home directory.


  • The public key entry must have a correct format like:



    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAir2cIHsAFg8QzLF6Yb... some optional comment


  • The authorized_keys file must use *nix line endings, what Notepad cannot do (so make sure your SFTP/FTP client uses ASCII transfer mode to convert the line endings)


  • The .ssh folder needs to have 700 permissions and the authorized_keys needs to have 600 permissions.


There are zillions of guides on the Internet that cover the above.

For example see my guide to Setting up SSH public key authentication in OpenSSH.




If the user is already a user on your server (has password [or other] authentication working), he/she can setup the public key on his/her own.




  • On *nix machines (or others that have OpenSSH available, what may include Windows), you can use ssh-copy-id script.

  • On Windows machines, you can use (my) WinSCP, with its Install Public Key into Server function.


See also my answer to Setting up public key authentication to Linux server from Windows (ppk private key).




You should provide your user a copy of the server's public host key, so that the user can verify it, when connecting for the first time (it's a separate from the authentication, what the rest of the question is about). Though many users just blindly accept the host key.






share|improve this answer


























  • Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

    – xChaax
    20 hours ago











  • See my updated answer.

    – Martin Prikryl
    20 hours ago






  • 4





    More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

    – user4556274
    15 hours ago











  • It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

    – Dave X
    29 mins ago
















12















  • The public key must go into authorized_keys file (not just to some text file) in the .ssh subfolder of user's home directory.


  • The public key entry must have a correct format like:



    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAir2cIHsAFg8QzLF6Yb... some optional comment


  • The authorized_keys file must use *nix line endings, what Notepad cannot do (so make sure your SFTP/FTP client uses ASCII transfer mode to convert the line endings)


  • The .ssh folder needs to have 700 permissions and the authorized_keys needs to have 600 permissions.


There are zillions of guides on the Internet that cover the above.

For example see my guide to Setting up SSH public key authentication in OpenSSH.




If the user is already a user on your server (has password [or other] authentication working), he/she can setup the public key on his/her own.




  • On *nix machines (or others that have OpenSSH available, what may include Windows), you can use ssh-copy-id script.

  • On Windows machines, you can use (my) WinSCP, with its Install Public Key into Server function.


See also my answer to Setting up public key authentication to Linux server from Windows (ppk private key).




You should provide your user a copy of the server's public host key, so that the user can verify it, when connecting for the first time (it's a separate from the authentication, what the rest of the question is about). Though many users just blindly accept the host key.






share|improve this answer


























  • Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

    – xChaax
    20 hours ago











  • See my updated answer.

    – Martin Prikryl
    20 hours ago






  • 4





    More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

    – user4556274
    15 hours ago











  • It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

    – Dave X
    29 mins ago














12












12








12








  • The public key must go into authorized_keys file (not just to some text file) in the .ssh subfolder of user's home directory.


  • The public key entry must have a correct format like:



    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAir2cIHsAFg8QzLF6Yb... some optional comment


  • The authorized_keys file must use *nix line endings, what Notepad cannot do (so make sure your SFTP/FTP client uses ASCII transfer mode to convert the line endings)


  • The .ssh folder needs to have 700 permissions and the authorized_keys needs to have 600 permissions.


There are zillions of guides on the Internet that cover the above.

For example see my guide to Setting up SSH public key authentication in OpenSSH.




If the user is already a user on your server (has password [or other] authentication working), he/she can setup the public key on his/her own.




  • On *nix machines (or others that have OpenSSH available, what may include Windows), you can use ssh-copy-id script.

  • On Windows machines, you can use (my) WinSCP, with its Install Public Key into Server function.


See also my answer to Setting up public key authentication to Linux server from Windows (ppk private key).




You should provide your user a copy of the server's public host key, so that the user can verify it, when connecting for the first time (it's a separate from the authentication, what the rest of the question is about). Though many users just blindly accept the host key.






share|improve this answer
















  • The public key must go into authorized_keys file (not just to some text file) in the .ssh subfolder of user's home directory.


  • The public key entry must have a correct format like:



    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAir2cIHsAFg8QzLF6Yb... some optional comment


  • The authorized_keys file must use *nix line endings, what Notepad cannot do (so make sure your SFTP/FTP client uses ASCII transfer mode to convert the line endings)


  • The .ssh folder needs to have 700 permissions and the authorized_keys needs to have 600 permissions.


There are zillions of guides on the Internet that cover the above.

For example see my guide to Setting up SSH public key authentication in OpenSSH.




If the user is already a user on your server (has password [or other] authentication working), he/she can setup the public key on his/her own.




  • On *nix machines (or others that have OpenSSH available, what may include Windows), you can use ssh-copy-id script.

  • On Windows machines, you can use (my) WinSCP, with its Install Public Key into Server function.


See also my answer to Setting up public key authentication to Linux server from Windows (ppk private key).




You should provide your user a copy of the server's public host key, so that the user can verify it, when connecting for the first time (it's a separate from the authentication, what the rest of the question is about). Though many users just blindly accept the host key.







share|improve this answer














share|improve this answer



share|improve this answer








edited 11 hours ago

























answered 21 hours ago









Martin PrikrylMartin Prikryl

11.4k43380




11.4k43380













  • Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

    – xChaax
    20 hours ago











  • See my updated answer.

    – Martin Prikryl
    20 hours ago






  • 4





    More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

    – user4556274
    15 hours ago











  • It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

    – Dave X
    29 mins ago



















  • Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

    – xChaax
    20 hours ago











  • See my updated answer.

    – Martin Prikryl
    20 hours ago






  • 4





    More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

    – user4556274
    15 hours ago











  • It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

    – Dave X
    29 mins ago

















Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

– xChaax
20 hours ago





Does it matter what directory for .ssh folder ? If does, what directory is home directory? And what is the format for authorized_keys file ?

– xChaax
20 hours ago













See my updated answer.

– Martin Prikryl
20 hours ago





See my updated answer.

– Martin Prikryl
20 hours ago




4




4





More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

– user4556274
15 hours ago





More generally, the public key must go in whatever file is specified as AuthorizedKeysFile in sshd_config, which by default is ~/.ssh/authorized_keys

– user4556274
15 hours ago













It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

– Dave X
29 mins ago





It's a bit of a sloppy hack, but on new machines I generally run a 'ssh-keygen' to create the ~/.ssh/ directory in the proper place with the proper permissions, and then copy keys into the authorized_keys file.

– Dave X
29 mins ago










xChaax is a new contributor. Be nice, and check out our Code of Conduct.










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