Estou seguindo este post para criar um túnel ssh para o mysql. A descrição detalhada do meu cenário de aplicativo é fornecida em meu outro SOQ .
Eu segui exatamente estes passos para criar um usuário:
useradd -s /bin/false myuser
mkdir /home/myuser/.ssh
touch /home/myuser/.ssh/authorized_keys
chown -R myuser:myuser /home/myuser/.ssh
chmod 755 /home/myuser/.ssh
chmod 600 /home/myuser/.ssh/authorized_keys
Não funcionou para mim. Nem sequer capaz de ssh no servidor remoto.
Dado o post muito antigo, estou procurando uma maneira sã de criar um usuário com privilégios limitados,
conecte-se apenas ao mysql e nada mais. Eu estou testando isso no Ubuntu.
O outro problema com isto é testar a conexão ssh do meu sistema. Então, como vou criar chaves de autorização para um sistema (minha máquina local) que não possui um IP estático. No entanto, a rede em que estou trabalhando tem um IP estático. É possível criar chaves de autorização para esse IP?
Editar
Re-testado com duas instâncias do ubuntu vagrant, ele funciona usando o usuário do ubuntu com senha, mas incapaz de se conectar com myuser e rsa key como criado em determinado artigo.
CHAVE SSH
ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/vagrant/.ssh/id_rsa):
/home/vagrant/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/vagrant/.ssh/id_rsa.
Your public key has been saved in /home/vagrant/.ssh/id_rsa.pub.
Fazer o upload para o servidor
scp /home/vagrant/.ssh/id_rsa.pub [email protected]:.
[email protected]'s password:
id_rsa.pub 100%
Acrescentar a chave RSA às chaves ssh do usuário fantasma
ubuntu@DEV:~ cat id_rsa.pub >> /home/ghost/.ssh/authorized_keys
SSH LOG
vagrant@precise64:~$ ssh -fNg -vvv -L 3307:127.0.0.1:3306 [email protected]
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.33.55 [192.168.33.55] port 22.
debug1: Connection established.
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/vagrant/.ssh/id_rsa" as a RSA1 public key
debug1: identity file /home/vagrant/.ssh/id_rsa type 1
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
debug1: identity file /home/vagrant/.ssh/id_rsa-cert type -1
debug1: identity file /home/vagrant/.ssh/id_dsa type -1
debug1: identity file /home/vagrant/.ssh/id_dsa-cert type -1
debug1: identity file /home/vagrant/.ssh/id_ecdsa type -1
debug1: identity file /home/vagrant/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1
debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "192.168.33.55" from file "/home/vagrant/.ssh/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /home/vagrant/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 11:5d:55:29:8a:77:d8:08:b4:00:9b:a3:61:93:fe:e5
debug3: load_hostkeys: loading entries for host "192.168.33.55" from file "/home/vagrant/.ssh/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /home/vagrant/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug1: Host '192.168.33.55' is known and matches the ECDSA host key.
debug1: Found key in /home/vagrant/.ssh/known_hosts:1
debug1: ssh_ecdsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/vagrant/.ssh/id_rsa (0x7f446fe9ada0)
debug2: key: /home/vagrant/.ssh/id_dsa ((nil))
debug2: key: /home/vagrant/.ssh/id_ecdsa ((nil))
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/vagrant/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/vagrant/.ssh/id_dsa
debug3: no such identity: /home/vagrant/.ssh/id_dsa
debug1: Trying private key: /home/vagrant/.ssh/id_ecdsa
debug3: no such identity: /home/vagrant/.ssh/id_ecdsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
[email protected]'s password:
192.168.33.55 / etc / ssh / sshd_config
RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile %h/.ssh/authorized_keys
192.168.33.55 SSHD LOGS
tail /var/log/auth.log -n 100
Feb 28 10:15:42 precise64 sudo: pam_unix(sudo:session): session closed for user root
Feb 28 10:15:53 precise64 sshd[2154]: Failed password for ghost from 192.168.33.31 port 52350 ssh2
Feb 28 10:15:53 precise64 sshd[2154]: Failed password for ghost from 192.168.33.31 port 52350 ssh2
Feb 28 10:15:53 precise64 sshd[2154]: Connection closed by 192.168.33.31 [preauth]
Feb 28 10:17:01 precise64 CRON[2157]: pam_unix(cron:session): session opened for user root by (uid=0)
Feb 28 10:17:01 precise64 CRON[2157]: pam_unix(cron:session): session closed for user root