As permissões do arquivo authorized keys não devem ser mais frouxas do que 600 e as permissões do diretório .ssh devem ser 700. Qualquer coisa mais aberta que isso, causará problemas
Eu segui todas as etapas descritas na resposta -
1. ssh-keygen -t rsa
Press enter for each line
2. cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
3. chmod og-wx ~/.ssh/authorized_keys
Eu também tentei isso -
This can be accomplished with the NoHostAuthenticationForLocalhost option, either used on the command line with -o NoHostAuthenticationForLocalhost or by inserting NoHostAuthenticationForLocalhost yes into ~/.ssh/config.
Todas as minhas permissões estão definidas corretamente, por exemplo,
-rw-r--r--. 1 user user 1537 Feb 17 17:47 authorized_keys
-rw-r--r--. 1 user user 1537 Feb 17 17:47 authorized_keys~
-rw-r--r--. 1 user user 175 Oct 14 16:04 config
-rw-------. 1 user user 1743 Feb 17 17:44 id_rsa
-rw-r--r--. 1 user user 399 Feb 17 17:44 id_rsa.pub
-rw-r--r--. 1 user user 739 Feb 17 17:41 id_rsa.pub~
-rw-r--r--. 1 user user 4803 Feb 10 10:52 known_hosts
-rw-r--r--. 1 user user 4397 Feb 10 10:52 known_hosts~
-rw-------. 1 user user 4803 Feb 10 10:31 known_hosts.old
permissões de .ssh -
drwx------. 2 user user 4096 Feb 17 17:47 .ssh
Ao fazer um sudo /usr/sbin/sshd -d , segue a saída -
debug1: sshd version OpenSSH_5.3p1
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-d'
Set /proc/self/oom_score_adj from 0 to -1000
debug1: Bind to port 22 on 0.0.0.0.
Bind to port 22 on 0.0.0.0 failed: Address already in use.
debug1: Bind to port 22 on ::.
Bind to port 22 on :: failed: Address already in use.
Cannot bind any address.
Saída do ssh -v localhost
OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /home/qubole/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to localhost [::1] port 22.
debug1: Connection established.
debug1: identity file /home/qubole/.ssh/identity type -1
debug1: identity file /home/qubole/.ssh/identity-cert type -1
debug1: identity file /home/qubole/.ssh/id_rsa type 1
debug1: identity file /home/qubole/.ssh/id_rsa-cert type -1
debug1: identity file /home/qubole/.ssh/id_dsa type -1
debug1: identity file /home/qubole/.ssh/id_dsa-cert type -1
debug1: identity file /home/qubole/.ssh/id_ecdsa type -1
debug1: identity file /home/qubole/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3
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: Forcing accepting of host key for loopback/localhost.
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,gssapi-keyex,gssapi-with-mic
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure. Minor code may provide more information
Credentials cache file '/tmp/krb5cc_502' not found
debug1: Unspecified GSS failure. Minor code may provide more information
Credentials cache file '/tmp/krb5cc_502' not found
debug1: Unspecified GSS failure. Minor code may provide more information
debug1: Unspecified GSS failure. Minor code may provide more information
Credentials cache file '/tmp/krb5cc_502' not found
debug1: Next authentication method: publickey
debug1: Offering public key: /home/qubole/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic
debug1: Trying private key: /home/qubole/.ssh/identity
debug1: Trying private key: /home/qubole/.ssh/id_dsa
debug1: Trying private key: /home/qubole/.ssh/id_ecdsa
debug1: No more authentication methods to try.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
Conteúdo do ssh_config -
# $OpenBSD: ssh_config,v 1.25 2009/02/17 01:28:32 djm Exp $
# This is the ssh client system-wide configuration file. See
# ssh_config(5) for more information. This file provides defaults for
# users, and the values can be changed in per-user configuration files
# or on the command line.
# Configuration data is parsed as follows:
# 1. command line options
# 2. user-specific file
# 3. system-wide file
# Any configuration value is only changed the first time it is set.
# Thus, host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.
# Site-wide defaults for some commonly used options. For a comprehensive
# list of available options, their meanings and defaults, please see the
# ssh_config(5) man page.
# Host *
# ForwardAgent no
# ForwardX11 no
# RhostsRSAAuthentication no
# RSAAuthentication yes
# PasswordAuthentication yes
# HostbasedAuthentication no
# GSSAPIAuthentication no
# GSSAPIDelegateCredentials no
# GSSAPIKeyExchange no
# GSSAPITrustDNS no
# BatchMode no
# CheckHostIP yes
# AddressFamily any
# ConnectTimeout 0
# StrictHostKeyChecking ask
# IdentityFile ~/.ssh/identity
# IdentityFile ~/.ssh/id_rsa
# IdentityFile ~/.ssh/id_dsa
# Port 22
# Protocol 2,1
# Cipher 3des
# Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc
# MACs hmac-md5,hmac-sha1,[email protected],hmac-ripemd160
# EscapeChar ~
# Tunnel no
# TunnelDevice any:any
# PermitLocalCommand no
# VisualHostKey no
Host *
GSSAPIAuthentication yes
# If this option is set to yes then remote X11 clients will have full access
# to the original X11 display. As virtually no X11 client supports the untrusted
# mode correctly we set this to yes.
ForwardX11Trusted yes
# Send locale-related environment variables
SendEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
SendEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
SendEnv LC_IDENTIFICATION LC_ALL LANGUAGE
SendEnv XMODIFIERS
Eu ainda não consigo usar o ssh no meu host local sem uma senha. Como configuro uma senha menos ssh para localhost?
As permissões do arquivo authorized keys não devem ser mais frouxas do que 600 e as permissões do diretório .ssh devem ser 700. Qualquer coisa mais aberta que isso, causará problemas