?
Solved

Windows Terminal Server brute-force attempts

Posted on 2013-01-18
3
Medium Priority
?
540 Views
Last Modified: 2013-02-15
Somebody is constantly running automated brute-force attacks against a Windows Server 2003 Terminal Server I published on WAN.
It is joined to a domain and I have Account Lockout Threshold GPO defined to lockout an account after 3 login attempts.
I also use local accounts on this server and I also set up local GPO Account Lockout Threshold to 3 login attempts.

But I still see regular logs in Event Viewer for numerous failed login attempts for non-existing domain and local users. These seem to be common usernames like admin, root, scan, etc.

What could I do to block all these attempts alltogether?
0
Comment
Question by:proteus-IV
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 10

Assisted Solution

by:rscottvan
rscottvan earned 1500 total points
ID: 38795291
If this server does not to be accessible from the whole internet, you can use Windows firewall, or preferably a hardware firewall, to restrict the systems that can attempt access.

You can also move RDP a less well-known port.  http://support.microsoft.com/kb/306759.
0
 

Accepted Solution

by:
proteus-IV earned 0 total points
ID: 38875180
I will upgrade the OS to Windows 2008 and implement certificate based authentication.
0
 

Author Closing Comment

by:proteus-IV
ID: 38892648
Incomplete solution.
0

Featured Post

Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

A hard and fast method for reducing Active Directory Administrators members.
Here's a look at newsworthy articles and community happenings during the last month.
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles from a Windows Server 2008 domain controller to a Windows Server 2012 domain controlle…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
Suggested Courses

764 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