Hello all user,

I have one issue regarding ssh

If i run the command in my terminal

sudo ssh hostname@IPaddress
enter password:

Permission denied, please try again.

i got above error.
how can i fix this above error...

thanks and regards
akki.............

Check the top of the manual page for the general usage of the SSH client:

You don't need and should not try to use sudo for this. It runs programs as other users and that won't do anything helpful here. Also, pay attention to where the user name and the hostname go.

Alternately you can write the same thing like this:

Either way, the hostname goes last.

If you do not have a name for the remote machine, then you'll have to use an IP address instead of a hostname.

if i trying without sudo samething happend....

ssh username@IPaddress
permission denied please try again


why it gives permission denied.......
how can i fix it


regards

The short answer is that you get that error because it is not letting you in, but you know that. If you have access to the server through other means, the sever's logs would tell you the specific reason. Do you have access to the server and its logs by other means?

Without such information, it is only possible to guess. Maybe the account on the server is locked. Otherwise, most likely either the user name or password is wrong.

You can get some limited information from running the SSH client in a more verbose mode using the -v option. But you will still need access to the server by other means to either make a valid user or unlock the existing account.

Then look through the output for this section:

However, the server logs are the real place to look.

This is my log when i run

ssh -v uname@ip


OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /home/naseem/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.1.234 [192.168.1.234] port 22.
debug1: Connection established.
debug1: identity file /home/naseem/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naseem/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.1.234:22 as 'naseem'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:bnylOwuSjbdkmWUhJEvAwe8t5rb3k+leP5DiZImVabg
debug1: Host '192.168.1.234' is known and matches the ECDSA host key.
debug1: Found key in /home/naseem/.ssh/known_hosts:9
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/naseem/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/naseem/.ssh/id_dsa
debug1: Trying private key: /home/naseem/.ssh/id_ecdsa
debug1: Trying private key: /home/naseem/.ssh/id_ed25519
debug1: Next authentication method: password
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.

how can i fix ,what is the problem

The extra data shows that the machine is on the same LAN and you probably have physical access to it.

So you'll need to sit down over at the server and look at the SSH logs. If the server is Ubuntu they should be in /var/log/auth.log

Or you can use awk to filter out everthing unrelated.

There's not much you can do from the client at this point. The SSH server is doing its job and keeping you out. The question which can only be answered on the server itself is why.

The first thing to check is whether the ssh server (sshd) is running on the target machine.