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Special Forums Cybersecurity SSH password-less login issue between linux and solaris Post 302713717 by error_lee on Thursday 11th of October 2012 06:41:52 AM
Old 10-11-2012
SSH password-less login issue between linux and solaris

Hello Gurus,

I am trying to set up bidirectional password-less login between a linux and a Solaris. The way I am doing is very simple, which is creating pub/priv key pairs on each host and add the pub key to each other's authorized_keys file:
ssh-keygen -t rsa (I tried dsa, and it didn't work aslo)

Surprisingly enough, having done the same set up on both machines, only linux->solaris trusted connection works while solaris->linux does not Smilie

Here is the verbose logs I got when I try to ssh to linux from the solaris:

Code:
debug1: Next authentication method: publickey
debug1: Trying private key: /home/nyfcgstg/.ssh/identity
debug3: no such identity: /home/nyfcgstg/.ssh/identity
debug1: Offering public key: /home/nyfcgstg/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: pkalg ssh-rsa blen 149
debug2: input_userauth_pk_ok: fp 80:58:a9:ba:b7:f8:5d:21:16:bd:4c:f8:d1:e0:04:dc
debug3: sign_and_send_pubkey
debug1: read PEM private key done: type RSA
Connection closed by xx.xx.xx.xxx
debug1: Calling cleanup 0x41afc(0x0)

After reading the private key the connection just closed by the Solaris.
The same pub key of linux is accepted by other Linux boxes so I am thinking this can be a cross-platform issue?

Open ssh on Linux: OpenSSH_5.2p1_q1.g463c730, OpenSSL 0.9.8k 25 Mar 2009
Open ssh on Solaris:OpenSSH_3.7.1p2, SSH protocols 1.5/2.0, OpenSSL 0.9.7c 30 Sep 2003

Any pointers will be appreciated.

Aaron

Moderator's Comments:
Mod Comment edit by bakunin: Please view this code tag video for how to use code tags when posting code and data.

Last edited by bakunin; 10-11-2012 at 07:53 AM..
 

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SSH-KEYSIGN(8)						    BSD System Manager's Manual 					    SSH-KEYSIGN(8)

NAME
ssh-keysign -- ssh helper program for host-based authentication SYNOPSIS
ssh-keysign DESCRIPTION
ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication with SSH protocol version 2. ssh-keysign is disabled by default and can only be enabled in the global client configuration file /etc/ssh/ssh_config by setting EnableSSHKeysign to ``yes''. ssh-keysign is not intended to be invoked by the user, but from ssh(1). See ssh(1) and sshd(8) for more information about host-based authen- tication. FILES
/etc/ssh/ssh_config Controls whether ssh-keysign is enabled. /etc/ssh/ssh_host_dsa_key /etc/ssh/ssh_host_ecdsa_key /etc/ssh/ssh_host_ed25519_key /etc/ssh/ssh_host_rsa_key These files contain the private parts of the host keys used to generate the digital signature. They should be owned by root, read- able only by root, and not accessible to others. Since they are readable only by root, ssh-keysign must be set-uid root if host- based authentication is used. /etc/ssh/ssh_host_dsa_key-cert.pub /etc/ssh/ssh_host_ecdsa_key-cert.pub /etc/ssh/ssh_host_ed25519_key-cert.pub /etc/ssh/ssh_host_rsa_key-cert.pub If these files exist they are assumed to contain public certificate information corresponding with the private keys above. SEE ALSO
ssh(1), ssh-keygen(1), ssh_config(5), sshd(8) HISTORY
ssh-keysign first appeared in OpenBSD 3.2. AUTHORS
Markus Friedl <markus@openbsd.org> BSD
December 7, 2013 BSD
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