topic Passwordless Logon With SSH... in Operating System - Linux

Passwordless Logon With SSH...

Lee Harris_5 — Wed, 15 Feb 2006 04:20:11 GMT

Hi, I'm trying to setup passwordless logon with SSH (sorry, if thats not the correct term, it probably isn't). I've done this in the past but can't remember how I did it now. I seem to remember generating an SSH key pair, and then adding the public key to the authorized keys file on the servers I wish to be able to logon to.

So basically, there is a central server where I have an ID. I want to be able to ssh to other servers on which I have an account from this point, and be connected without having to give my password...can anyone tell me how to do this?

Cheers - Lee

Re: Passwordless Logon With SSH...

paolo barila — Wed, 15 Feb 2006 04:30:51 GMT

Hi,
you can configure a publickey authentication with a null passphrase:

login IDA@SERVER1

SERVER1# ssh-keygen -t rsa -C "ssh_for_`whoami`@`hostname`" -f ~/.ssh/id_rsa
empty for no passphrase

SERVER1# cp -p id_rsa.pub authorized_keys.SERVER1
SERVER1# chmod 600 auth*
SERVER1# scp -p authorized_keys.SERVER1 SERVER2:/$PWD

login IDB@SERVER2

SERVER2# cat authorized_keys.SERVER1 >> authorized_keys
SERVER2# chmod 600 authorized_keys

IDA@SERVER1

SERVER1# ssh IDB@SERVER2
yes

(and viceversa)

Pablo

Re: Passwordless Logon With SSH...

Asif Sharif — Wed, 15 Feb 2006 04:36:05 GMT

Hi Harris,

This link will help you.
http://gentoo-wiki.com/SECURITY_SSH_without_a_password#Client_setup

Regards,
Asif Sharif

Re: Passwordless Logon With SSH...

Vipulinux — Wed, 15 Feb 2006 04:54:10 GMT

Hi
Following is the best solution I have ever seen:
http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch17_:_Secure_Remote_Logins_and_File_Copying#Using_SSH_and_SCP_without_a_password

Cheers
Vipul

Re: Passwordless Logon With SSH...

Lee Harris_5 — Wed, 15 Feb 2006 04:56:14 GMT

Thanks. Now sorted.