Log in failed to RHEL Server using PUTTY : shows "Access denied"

If you want want to log into RHEL using PUTTY and it shows "Access denied" , How to fix this ?


Follow Simple Troubleshooting Steps : -

1. # First ping x.x.x.x from the machine. 

2. Then log in to RHEL using root user.
then use following command
3. # vim /etc/ssh/sshd_config


sshd_config -- OpenSSH SSH daemon configuration file

find (/GSSAPIAuthentication) press i to edit and then 

then >> set GSSAPIAuthentication No
if GSSAPIAuthentication yes then it will not allow you to login to your RHEL server. 

then finally restart sshd. 

4.
# /etc/init.d/sshd restart or 
# service sshd restart


if  you are still facing problem ... then check allow users and root are permits .
Also check .. 

PermitRootLogin yes

AllowUsers admin admin2 user2 user1