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:
ssh-keygen -t dsa
  • 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
chmod go-w $HOME
chmod 700 $HOME/.ssh
chmod go-rwx $HOME/.ssh/*
  • Type the following to copy the key to the remote server.
cd ~/.ssh
scp id_dsa.pub remote_username@remote_host:/tmp
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