Can not access server via SSH, Permission Denied
https://askubuntu.com/questions/1517143/can-not-access-server-via-ssh-permission-denied
I have recently set up a server on an AWS EC2 instance with Ubuntu 24.04. I am trying to change the configuration to authenticate via password but when I try to log in I get a 'Permission denied, please try again.' error message.
I have done the following:
- Updated /etc/ssh/sshd_config so: PubkeyAuthentication no, and PasswordAuthentication yes
- Created a new user that has been given sudo access.
- Restarted the ssh service with sudo systemctl restart ssh
- Checked the user isn't locked
- Checked AllowUsers isn't set in the config
- Triple checked the password is right (I can su to that user with no problem).
Here is the output from the attempted connection:
ssh -vvv username@18.xxx.xxx.xxx
OpenSSH_9.6p1, LibreSSL 3.3.6
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug2: resolve_canonicalize: hostname 18.xxx.xxx.xxx is address
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/localuser/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/Users/localuser/.ssh/known_hosts2'
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug3: channel_clear_timeouts: clearing
debug3: ssh_connect_direct: entering
debug1: Connecting to 18.xxx.xxx.xxx [18.xxx.xxx.xxx ] port 22.
debug3: set_sock_tos: set socket 3 IP_TOS 0x48
debug1: Connection established.
debug1: identity file /Users/localuser/.ssh/id_rsa type 0
debug1: identity file /Users/localuser/.ssh/id_rsa-cert type -1
debug1: identity file /Users/localuser/.ssh/id_ecdsa type -1
debug1: identity file /Users/localuser/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/localuser/.ssh/id_ecdsa_sk type -1
debug1: identity file /Users/localuser/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /Users/localuser/.ssh/id_ed25519 type -1
debug1: identity file /Users/localuser/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/localuser/.ssh/id_ed25519_sk type -1
debug1: identity file /Users/localuser/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /Users/localuser/.ssh/id_xmss type -1
debug1: identity file /Users/localuser/.ssh/id_xmss-cert type -1
debug1: identity file /Users/localuser/.ssh/id_dsa type -1
debug1: identity file /Users/localuser/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_9.6p1 Ubuntu-3ubuntu13
debug1: compat_banner: match: OpenSSH_9.6p1 Ubuntu-3ubuntu13 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 18.xxx.xxx.xxx :22 as 'username'
debug3: record_hostkey: found key type ED25519 in file /Users/localuser/.ssh/known_hosts:1
debug3: load_hostkeys_file: loaded 1 keys from 18.xxx.xxx.xxx
debug1: load_hostkeys: fopen /Users/localuser/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug3: order_hostkeyalgs: have matching best-preference key type ssh-ed25519-cert-v01@openssh.com, using HostkeyAlgorithms verbatim
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c,kex-strict-c-v00@openssh.com
debug2: host key algorithms: ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-s,kex-strict-s-v00@openssh.com
debug2: host key algorithms: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug3: kex_choose_conf: will use strict KEX ordering
debug1: kex: algorithm: sntrup761x25519-sha512@openssh.com
debug1: kex: host key algorithm: ssh-ed25519
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
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:zzSUWOxfnJ9mRowALRTDSqVH+jYFh5CQhMhJVn4j/wY
debug3: record_hostkey: found key type ED25519 in file /Users/localuser/.ssh/known_hosts:1
debug3: load_hostkeys_file: loaded 1 keys from 18.xxx.xxx.xxx
debug1: load_hostkeys: fopen /Users/localuser/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: Host '18.xxx.xxx.xxx ' is known and matches the ED25519 host key.
debug1: Found key in /Users/localuser/.ssh/known_hosts:1
debug3: send packet: type 21
debug1: ssh_packet_send2_wrapped: resetting send seqnr 3
debug2: ssh_set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: Sending SSH2_MSG_EXT_INFO
debug3: send packet: type 7
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: ssh_packet_read_poll2: resetting read seqnr 3
debug1: SSH2_MSG_NEWKEYS received
debug2: ssh_set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug3: kex_input_ext_info: extension server-sig-algs
debug1: kex_ext_info_client_parse: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256>
debug3: kex_input_ext_info: extension publickey-hostbound@openssh.com
debug1: kex_ext_info_check_ver: publickey-hostbound@openssh.com=<0>
debug3: kex_input_ext_info: extension ping@openssh.com
debug1: kex_ext_info_check_ver: ping@openssh.com=<0>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug3: kex_input_ext_info: extension server-sig-algs
debug1: kex_ext_info_client_parse: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256>
debug3: receive packet: type 51
debug1: Authentications that can continue:
debug3: start over, passed a different list publickey,keyboard-interactive,password
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug3: ssh_get_authentication_socket_path: path '/private/tmp/com.apple.launchd.voOEBl7ytW/Listeners'
debug1: get_agent_identities: bound agent to hostkey
debug1: get_agent_identities: ssh_fetch_identitylist: agent contains no identities
debug1: Will attempt key: /Users/localuser/.ssh/id_rsa RSA SHA256:ZcXd3HoA0S488gtDsGKvVP+p6yyaIyw6kxVmneraJpo
debug1: Will attempt key: /Users/localuser/.ssh/id_ecdsa
debug1: Will attempt key: /Users/localuser/.ssh/id_ecdsa_sk
debug1: Will attempt key: /Users/localuser/.ssh/id_ed25519
debug1: Will attempt key: /Users/localuser/.ssh/id_ed25519_sk
debug1: Will attempt key: /Users/localuser/.ssh/id_xmss
debug1: Will attempt key: /Users/localuser/.ssh/id_dsa
debug2: pubkey_prepare: done
debug1: Offering public key: /Users/localuser/.ssh/id_rsa RSA SHA256:ZcXd3HoA0S488gtDsGKvVP+p6yyaIyw6kxVmneraJpo
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue:
debug1: Trying private key: /Users/localuser/.ssh/id_ecdsa
debug3: no such identity: /Users/localuser/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /Users/localuser/.ssh/id_ecdsa_sk
debug3: no such identity: /Users/localuser/.ssh/id_ecdsa_sk: No such file or directory
debug1: Trying private key: /Users/localuser/.ssh/id_ed25519
debug3: no such identity: /Users/localuser/.ssh/id_ed25519: No such file or directory
debug1: Trying private key: /Users/localuser/.ssh/id_ed25519_sk
debug3: no such identity: /Users/localuser/.ssh/id_ed25519_sk: No such file or directory
debug1: Trying private key: /Users/localuser/.ssh/id_xmss
debug3: no such identity: /Users/localuser/.ssh/id_xmss: No such file or directory
debug1: Trying private key: /Users/localuser/.ssh/id_dsa
debug3: no such identity: /Users/localuser/.ssh/id_dsa: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug3: send packet: type 50
debug2: we sent a keyboard-interactive packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue:
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred:
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
username@18.xxx.xxx.xxx 's password:
debug3: send packet: type 50
debug2: we sent a password packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue:
Permission denied, please try again.
I can't any other possible reason it should not be working. Any guideance would be much appreciated.
Thanks