I am running a CentOS 6.5 machine remotely via SSH. I use RSA keys and have disabled password authentication. The problem that I am having is that whenever I add a new user and want him/her to log in via SSH, they are denied access.
At first this seemed like a simple problem. Theses are what I have already tried:
- Checked the pub key for obvious errors
- Ensured the right permissions on authorized_keys and ~/.ssh
- Made sure they're in the AllowUsers list in ssh_config
- Checked firewall permissions
- Made sure their private key is being used
- Restarted SSHD
Here is what I have set in
PermitRootLogin no AllowUsers keving moman muser
And this is what my log is telling me:
Login attempted when not in AllowUsers list: muser : 3 Time(s) root : 127 Time(s)
Why is SSH not allowing login while the AllowUsers list obviously lists muser? Is there another place where this could be set?
UPDATE: I attempted a login to that account on my machine after adding my pub key to the user's authorized_keys file with the verbose flag
-v. These are the results (with a fake IP and server host key for security reasons):
$ ssh -v firstname.lastname@example.org OpenSSH_6.6.1, OpenSSL 1.0.1i 6 Aug 2014 debug1: Reading configuration data /c/Users/[user]/.ssh/config debug1: Connecting to 126.96.36.199 [188.8.131.52] port 22. debug1: Connection established. debug1: identity file /c/Users/[user]/.ssh/id_rsa type 1 debug1: identity file /c/Users/[user]/.ssh/id_rsa-cert type -1 debug1: identity file /c/Users/[user]/.ssh/id_dsa type -1 debug1: identity file /c/Users/[user]/.ssh/id_dsa-cert type -1 debug1: identity file /c/Users/[user]/.ssh/id_ecdsa type -1 debug1: identity file /c/Users/[user]/.ssh/id_ecdsa-cert type -1 debug1: identity file /c/Users/[user]/.ssh/id_ed25519 type -1 debug1: identity file /c/Users/[user]/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.6.1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000 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<3072<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: Server host key: RSA [censored] debug1: Host '184.108.40.206' is known and matches the RSA host key. debug1: Found key in /c/Users/[user]/.ssh/known_hosts:4 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server 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: publickey debug1: Offering RSA public key: /c/Users/[user]/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug1: Trying private key: /c/Users/[user]/.ssh/id_dsa debug1: Trying private key: /c/Users/[user]/.ssh/id_ecdsa debug1: Trying private key: /c/Users/[user]/.ssh/id_ed25519 debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic).