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SSH asks for password, even with public key installed

http://rcsg-gsir.imsb-dsgi.nrc-cnrc.gc.ca/documents/internet/node31.html

I am trying to login from machine A to machine B with password-less SSH login as described in the above link.I have followed all the steps but still the password is being prompted for.How to diagnose this and resolve the issue

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Better to ask this on serverfault.com? – knitatoms Nov 10 '10 at 10:24
@knitatoms, please don't invite people to repost their question on another site. Things will be moved automatically if people vote for that. No need to ask for duplicates! Thanks! – Arjan Nov 20 '10 at 0:19
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migrated from stackoverflow.com Nov 12 '10 at 0:43

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closed as exact duplicate by Arjan, Diago Nov 20 '10 at 7:35

This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question. See the FAQ for guidance on how to improve it.

2 Answers

up vote 2 down vote

You need to edit: /etc/ssh/sshd_config (or equivalent for your distribution)

And make sure the following lines are set as shown:

....
ChallengeResponseAuthentication no
PasswordAuthentication no
UsePAM no
...

Be careful though - you could lock yourself out. Here's a good guide:

http://www.debuntu.org/ssh-key-based-authentication

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@Knitamatoms:On which machine this should be done – Rajeev Nov 10 '10 at 10:35
Machine B if that is the one you are connecting to. – knitatoms Nov 10 '10 at 18:34
@Knitamatoms:I believe thats not the problem ,bcoz i have configured another machine with the options mentioned as yes – Rajeev Nov 10 '10 at 18:48
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up vote 1 down vote

You can still keep password-based authentication (PasswordAuthentication Yes) and use keys when you have them. I have a box here for shared git that we all use our own ssh keys (using .ssh/authorized_keys) but my user account I login with a username/password. The key is adding the public side of the key to .ssh/authorized_keys file on the server you want to login to remotely.

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