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I don't think it is possible to do what you are asking. If you could, someone could "brute force" to find valid usernames on your server. I am also pretty sure that the username and the password are sent simultaneously by the client, you could verify this by capturing packets using Wireshark on an unencrypted SSH connection. By "hacking activities" I assume ...


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Why are the SSH variables set? It is likely that the variables are set because your VNC connection is tunneled through an SSH connection. There are good reasons to do this. VNC uses the RFB protocol which is not secure. Tunneling VNC through SSH improves security. Why is the SSH_CONNECTION variable the same? The SSH_CONNECTION variable consists of four ...


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On the RHEL machine, try: ssh -o GSSAPIAuthentication=no zabbix@172.18.xxx.xx If that works, make it permanent by editing ~/.ssh/config and add: GSSAPIAuthentication no Also, check that the RHEL is visible in DNS (from the server's point of view). The server tries to check your reverse DNS resolution. If that fails, you'll suffer a delay. This check ...


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Is there some other sshd binary on the box configured without GSS and PAM perhaps? Try this: /usr/sbin/sshd -d -f /etc/ssh/sshd_config and see if you get the same errors as above. If not then your service sshd start executes a different binary. In that case you can try: /bin/bash -x /etc/init.d/sshd start and go through the output (may be quite long) ...


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what command are you using ? ssh -p 2222 foobar The error message you mention say that you do not resolv foobar. have you tried using IP ? e.g. ssh -p 2222 192.168.1.6 Additionally, if you want nmapto show what's actually running instead of resolving well-known ports to protocols, you can use the -sV option. -sV: Probe open ports to determine ...


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By looking at /var/log/auth.log, it is verified that Filezilla on the Mac client actually seems to be using the Mac SSH-agent rather than the password entered there. Verified that SFTP is using SSH-keys authentication by trying and failing to connect through SFTP on another computer.



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