ssh public key authentication
Posted: 24 Dec 2010, 17:57
I'm trying to set up bubba2 so that I can log on to it from selected computer accounts without a password using public key authentication. I've created a key pair on the remote computer:
and sent it to bubba2:
After typing bubba2's password, the remote computer's public key is added to 'authorized_keys' on bubba2 but I still have to type bubba2's password when I ssh to it. This method works as it's supposed to on various Linux boxes including my bubba1! I've looked carefully at /etc/sshd_config and /etc/ssh_config on both bubbas and there don't seem to be any relevant differences.
I've also made sure that the path to authorized_keys on bubba2 is not group accessible - no difference.
If this helps, here's 'ssh -v bubba2' from an 'authorised' remote computer:
Any help much appreciated!
Code: Select all
ssh-keygen -t rsa -b 1024
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ssh press@bubba2 "cat >> ~/.ssh/authorized_keys" < ~/.ssh/id_rsa.pub
I've also made sure that the path to authorized_keys on bubba2 is not group accessible - no difference.
If this helps, here's 'ssh -v bubba2' from an 'authorised' remote computer:
Code: Select all
OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to bubba2 [192.168.0.2] port 22.
debug1: Connection established.
debug1: identity file /home/press/.ssh/identity type -1
debug1: identity file /home/press/.ssh/id_rsa type 1
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-1024
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-1024
debug1: identity file /home/press/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3p2 Debian-9etch3ex1
debug1: match: OpenSSH_4.3p2 Debian-9etch3ex1 pat OpenSSH_4*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu4
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'bubba2' is known and matches the RSA host key.
debug1: Found key in /home/press/.ssh/known_hosts:5
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering public key: /home/press/.ssh/id_rsa
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Trying private key: /home/press/.ssh/identity
debug1: Trying private key: /home/press/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive