Remote ssh access denied.

[Mysticalsam]

I am trying to ssh into ubuntu server via putty but unable to login. I can ssh locally via same and different subnet but when I go WAN, "Access Denied". Previously I was unable to get login page, I was getting connection time out. Then I reconfigured NAT rule in router firewall for port 22, this time I got login as: but can't login. Can't figure out where is the problem.

 

[McHenryB]

Change LogLevel to VERBOSE in your sshd.conf file. Then have a look at the /var/log/auth.log file to see what is happening. You might also want to check the AllowUsers and DenyUsers entries in the conf file.

PS - Just another thought. You are doing your testing from a computer that is located outside of your network?