Jonathan Arbib

Tag: Shortest passwordless ssh tutorial

Shortest passwordless ssh tutorial, ever

by on Aug.05, 2008, under Tutorials

I am readapting this tutorial from here for reference purposes only :-)

Update: Thanks to Pedro for fix (rm ~/id_dsa.pub)

Update: Thanks Mike G for typo/fix/correction

local$ ssh-keygen -t dsa
local$ scp ~/.ssh/id_dsa.pub remote:~/
local$ ssh username@remote
remote$ cat ~/id_dsa.pub >> ~/.ssh/authorized_keys
remote$ chmod 644 ~/.ssh/authorized_keys
remote$ rm ~/id_dsa.pub
remote$ exit
local$ ssh username@remote

Now instead of the normal password you should be asked for the password you entered for your dsa key. This isn’t passwordless yet but shows that ssh is using the key

Note: Leave Key password blank to have passwordless authentication

Fixes for possible problems:

chmod 0600 authorized_keys
ln -s authorized_keys2 authorized_keys (or viceversa)
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