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Old 04-12-2008, 08:34 AM   #1
shishirkotkar
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Registered: Sep 2007
Posts: 83

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ssh login without password


i have an LTSP network...
i want to try local applications...ie execute the application on the thin client rather than on on the LTSP server

my thin clients host name is ws101
LTSP server linux- 75hv

To do so i followed following procedure on the LTSP server

1. Add this line to lts.conf

LOCAL_APPS = Y

This forces workstations to start the ssh daemon when they boot.

2. To enable login in on the workstation without a password we did this:

first generate as root a DSA key
> ssh-keygen -q -t dsa -f /root/.ssh/id_dsa
Create a directory .ssh in /opt/ltsp/i386/root/
> mkdir /opt/ltsp/i386/root/.ssh
> chmod 700 /opt/ltsp/i386/root/.ssh
Copy the public dsa file
> cp /root/.ssh/id_dsa.pub /opt/ltsp/i386/root/.ssh/authorized_keys
> chmod 600 /opt/ltsp/i386/root/.ssh/authorized_keys

Questions

Now to try password less ssh login what am i suppose to do??
What i did was from the thin client i gave command "ssh root@ws101"
after i do this it asks me for root@ws101's password...

Do i have to do any configurration changes in ssh_config or sshd_config??
 
Old 04-12-2008, 10:04 AM   #2
Bruce Hill
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Registered: Jun 2003
Location: Tupelo, MS
Distribution: Gentoo
Posts: 6,926

Rep: Reputation: 124Reputation: 124
Here's my passwordless loging tute:
Code:
On the server:
ssh-keygen -f /root/.ssh/identity.silas -t dsa
rsync -va /root/.ssh/identity.silas.pub root@silas:/root/.ssh/
The above lines you run on the backup server, and then you go to silas and you run:
cat /root/.ssh/identity.silas.pub >> /root/.ssh/authorized_keys
chmod 640 /root/.ssh/authorized_keys
rm -f /root/.ssh/identity.silas.pub
Then test passwordless logins from server to silas by typing this at the server's prompt:
ssh -o"BatchMode yes" -o"user root" silas -i /root/.ssh/identity.silas
silas is the client ... adjust accordingly
 
Old 04-12-2008, 05:27 PM   #3
choogendyk
Senior Member
 
Registered: Aug 2007
Location: Massachusetts, USA
Distribution: Solaris 9 & 10, Mac OS X, Ubuntu Server
Posts: 1,189

Rep: Reputation: 105Reputation: 105
Or, for a more complete explanation that won't trip you up if something is slightly different with your setup, take a look at

http://sial.org/howto/openssh/publickey-auth/

I've relied on the howto's on this site for a number of things, including ssl certificates, ssh, etc.
 
  


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