So I have been struggling with trying to authenticate without a password. Here is all my steps.
On Source Host ssh-keygen and saved the file into the default directory with a blank key phrase (enter) drwx------ 2 root root 4096 Dec 11 18:08 .ssh is the file permissions.
ssh-keyscan 192.168.117.131 > known_hosts
ssh-copy-id firstname.lastname@example.org and imputed "user's" password. After entering password, I got:
ssh-copy-id email@example.com /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys firstname.lastname@example.org's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'email@example.com'" and check to make sure that only the key(s) you wanted were added.
- ssh firstname.lastname@example.org and it is still requiring a password.
On Remote Host
drwxr-xr-x 2 user user 4096 Dec 12 08:27 .ssh
-rwxr-xr-x 1 user user 391 Dec 12 08:27 authorized_keys
- authorized_key file has the same key as id_rsa.pub on the SOURCE server.
My sshd_config file has the following settings:
#LoginGraceTime 2m #PermitRootLogin prohibit-password StrictModes no #MaxAuthTries 6 #MaxSessions 10 PubkeyAuthentication yes # Expect .ssh/authorized_keys2 to be disregarded by default in future. AuthorizedKeysFile .ssh/authorized_keys .ssh/authorized_keys2
From source server, tried to SSH once again, and it is still asking for a password.
Here is my debug log as well:
root@kali:~/.ssh# ssh -v email@example.com OpenSSH_7.4p1 Debian-10, OpenSSL 1.0.2k 26 Jan 2017 debug1: Reading configuration data /root/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to 192.168.117.131 [192.168.117.131] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.4p1 Debian-10 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.5p1 Ubuntu-10 debug1: match: OpenSSH_7.5p1 Ubuntu-10 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 192.168.117.131:22 as 'user' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: firstname.lastname@example.org MAC: <implicit> compression: none debug1: kex: client->server cipher: email@example.com MAC: <implicit> compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:uGQe2r9lvKFm6w5p5jInX8Ywrg2PmICccUvC+q+Wc18 debug1: Host '192.168.117.131' is known and matches the ECDSA host key. debug1: Found key in /root/.ssh/known_hosts:3 debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 134217728 blocks debug1: Skipping ssh-rsa key /root/.ssh/id_rsa - not in PubkeyAcceptedKeyTypes debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/id_dsa debug1: Trying private key: /root/.ssh/id_ecdsa debug1: Trying private key: /root/.ssh/id_ed25519 debug1: Next authentication method: password firstname.lastname@example.org's password:
Please help, I have been trying to figure this out for the last 2 days.