Ssh without password

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Secure shell (ssh) protocols can be configure to work without protocols. This is particularly helpful for machines that are used often.

Configuring ssh without password from a POSIX-compliant terminal

  • Log into a local Linux or MacOSX computer
  • Type the following to generate the ssh key:

<source lang='bash'> ssh-keygen -t dsa </source>

  • Accept the default key location by pressing Enter.
  • Secure permission of your authentication keys by closing permission to your home directory, .ssh directory, and authentication files

<source lang='bash'> chmod go-w $HOME chmod 700 $HOME/.ssh chmod go-rwx $HOME/.ssh/* </source>

  • Type the following to copy the key to the remote server.

<source lang='bash'> cd ~/.ssh scp id_dsa.pub remote_username@remote_host:/tmp </source>

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