I am trying to connect from userA1@hostA to host userB1@hostB using ssh.
I added the content of .ssh/id_rsa.pub file from userA1 to .ssh/authorized_keys file of userB1.
Set authorized_keys and .ssh folder permission of userB1 to 600 and 700.
Tried to login using ssh command. Got - Permission denied (publickey).
Ok, then I created a new user at hostB, lets call him userB2. Did the same things as userB1. And successfully login from userA1@hostA to userB2@hostB!
So, I am totally confused why ssh is failing with userB1.
Last part of verbose message for 2 different users are as follows:
For userB1: ssh userB1@hostB <- failed
debug1: Unspecified GSS failure. Minor code may provide more information
Cannot determine realm for numeric host address
debug2: we did not send a packet, disable method
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/userA1/.ssh/identity
debug3: no such identity: /home/userA1/.ssh/identity
debug1: Offering public key: /home/userA1/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug3: Wrote 368 bytes for a total of 1645
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic
debug1: Trying private key: /home/userA1/.ssh/id_dsa
debug3: no such identity: /home/userA1/.ssh/id_dsa
debug1: Trying private key: /home/userA1/.ssh/id_ecdsa
debug3: no such identity: /home/userA1/.ssh/id_ecdsa
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
For userB2: ssh userB2@hostB <- pass
debug1: Unspecified GSS failure. Minor code may provide more information
Cannot determine realm for numeric host address
debug2: we did not send a packet, disable method
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/userA1/.ssh/identity
debug3: no such identity: /home/userA1/.ssh/identity
debug1: Offering public key: /home/userA1/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug3: Wrote 368 bytes for a total of 1645
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug2: input_userauth_pk_ok: SHA1 ................
..........
In hostB /var/log/secure file, when login using userB2 it shows:
Feb 3 11:54:19 development sshd[3246]: Accepted publickey for userB2 from hostA port 58773 ssh2
for userB1, it shows:
Feb 3 11:56:34 development sshd[3349]: Connection closed by hostA
In sshd_config file at hostB, there is nothing specified about any of those users. Can any of you help me to figure out the reason?
Thanks.
