Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Remote root access using putty

Posted on 2004-08-26
6
Medium Priority
?
786 Views
Last Modified: 2013-12-27
We are trying to minimise the ability of users logging on directly as root. By forcing them to log on as their own accounts and then su'ing to root, we can audit who has done what better.
/etc/default/login has CONSOLE=/dev/console which stops people logging is as root remotely when they use telnet.
However, now we are moving towarss SSH, I tried using PuTTY and found out that you CAN log in as root remotely with this product!

Does anyone know why this is allowed and how it can be stopped?

Thanks

Chris
0
Comment
Question by:cjshepherd
  • 4
  • 2
6 Comments
 
LVL 34

Expert Comment

by:PsiCop
ID: 11904145
Yes. I *assume*, since you don't say, that you are using OpenSSH.

In the sshd_config file, there is a specific entry for allowing/disallowing root login via SSH. I'll have to find it and I'll post it here.

If you're not using OpenSSH, well, we're Experts, not mindreaders. Tell us what you ARE using.
0
 

Author Comment

by:cjshepherd
ID: 11904290
Sorry - yes I am using OpenSSH.

0
 
LVL 34

Expert Comment

by:PsiCop
ID: 11904399
What VERSION?
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 34

Accepted Solution

by:
PsiCop earned 500 total points
ID: 11904431
The online man page for the the current version OpenSSH sshd_config file can be found at --> http://www.openbsd.org/cgi-bin/man.cgi?query=sshd_config&sektion=5&arch=&apropos=0&manpath=OpenBSD+Current

Specifically, you are probably interested in the DenyUsers and PermitRootLogin keywords. Using either one of those you will be able to block login as root using SSH.
0
 

Author Comment

by:cjshepherd
ID: 11905378
got it!  Thanks very much
0
 
LVL 34

Expert Comment

by:PsiCop
ID: 11905927
Don't forget to force the sshd daemon to re-read the config file after you change it. The changes are not effective until after SSH re-reads its config.

# kill -HUP [pid of sshd]

The pid is probably recorded in /var/run/sshd.pid or something similar.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
I promised to write further about my project, and here I am.  First, I needed to setup the Primary Server.  You can read how in this article: Setup FreeBSD Server with full HDD encryption (http://www.experts-exchange.com/OS/Unix/BSD/FreeBSD/A_3660-S…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
In a previous video, we went over how to export a DynamoDB table into Amazon S3.  In this video, we show how to load the export from S3 into a DynamoDB table.

879 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question