11-23-2009
Quote:
Originally Posted by
temhem
hi All,
i need to connect(sftp) from serverA to serverB via rsa algorithm. But i can not success this.
i did like that:
On ServerA:
#ssh-keygen -t rsa
after running this command, "id_rsa" and "id_rsa.pub" files were generated. i checked.there is private key in id_rsa file and public key in id_rsa.pub file.
#ssh user@serverB mkdir -p .ssh
i checked that on serverB .ssh directory was generated.
#cat .ssh/id_rsa.pub | ssh user@serverB 'cat >> .ssh/authorized_keys'
i checked that public key had been sent to authorized_keys file which is in .ssh directory,serverB
but when i want to connect from serverA to serverB like that
on server A it asked me password
i dont understand why
# sftp user@serverB
user@serverB's password
Are there any other way connect from one server to another server without password?
Thanks.
Set the permissions of .ssh directory and all the files to 640
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LEARN ABOUT LINUX
ssh-copy-id
SSH-COPY-ID(1) General Commands Manual SSH-COPY-ID(1)
NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys
SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine
DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine and append the indicated identity file to that machine's ~/.ssh/autho-
rized_keys file.
If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your
ssh-agent. Otherwise, if this:
ssh-add -L
provides any output, it uses that in preference to the identity file.
If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin-
gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory,
if necessary.)
NOTES
This program does not modify the permissions of any pre-existing files or directories. Therefore, if the remote sshd has StrictModes set in
its configuration, then the user's home, ~/.ssh folder, and ~/.ssh/authorized_keys file may need to have group writability disabled manu-
ally, e.g. via
chmod go-w ~ ~/.ssh ~/.ssh/authorized_keys
on the remote machine.
SEE ALSO
ssh(1), ssh-agent(1), sshd(8)
OpenSSH 14 November 1999 SSH-COPY-ID(1)