Solved

IIS 7 - disable SSL 2.0

Posted on 2011-03-03
6
1,304 Views
Last Modified: 2012-05-11
I have followed the article at http://support.microsoft.com/kb/187498 and restarted my server after making the changes.  

However after doing a TCP dump, I still see SSL 2.0 being negotiated.

I am running IIS 7 and Windows Server 2008.  

How can I disable SSL 2.0 permanently?  

My TCPDump says this:

Secure Socket Layer
   SSLv2 Record Layer: Client Hello
      [Version: SSL 2.0 (0x0002)]
      Length: 98
      Handshake message Type:  Client Hello (1)
      Version: TLS 1.0 (0x0301)
      Cipher Spec Length: 57
      Session ID Length: 0
      Challenge length: 32
0
Comment
Question by:symigeek
  • 3
  • 2
6 Comments
 
LVL 34

Accepted Solution

by:
Shreedhar Ette earned 250 total points
ID: 35028613
Hi,

Refer this article:
http://www.sslshopper.com/article-how-to-disable-ssl-2.0-in-iis-7.html

After change to registry reboot the server once.

Hope this helps,
Shree
0
 

Author Comment

by:symigeek
ID: 35029471
Yes, that is exactly what I did, including rebooting my server after the registry change.
0
 
LVL 2

Expert Comment

by:garrett_boarder
ID: 35031769
I ran this from the command line and then rebooted my server.  (REG ADD "HKLM\System\CurrentControlSet\Control\SecurityProviders\SChannel\Protocols\SSL 2.0\Server" /v DisabledByDefault /t REG_DWORD /d 1 /f)  All was well after that.  Needed this for PCI Compliance.  You can go to http://serversniff.net/content.php?do=ssl to test your ssl status or you can force IE to use SSL 2 as well to test by going to Tools --> Internet Options --> Scroll Towards the bottom and uncheck SSL 3 as well as TLS 1 and check SSL 2.  You will need to close the browser and open it up again and you should get a page can not be displayed error.  Make sure to re-enable SSL 3 and TLS 1.0 afterwards.  Also I had to do a false positive report to the pci scanning company since they were still flagging SSL 2.
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 2

Expert Comment

by:garrett_boarder
ID: 35031782
You need to use the Advanced tab on Internet Options to find the SSL settings.  Forgot to mention that.
0
 
LVL 2

Expert Comment

by:garrett_boarder
ID: 35031814
http://www.sslshopper.com/article-how-to-disable-ssl-2.0-in-iis-7.html This method worked for me in IIS 6 since it seems to like Enabled = 0 reg key instead of DisabledByDefault = 1.
0
 

Author Closing Comment

by:symigeek
ID: 35036260
Even though I had already done this, it turned out to the the solution.
0

Featured Post

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

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

Sometimes drives fill up and we don't know why.  If you don't understand the best way to use the tools available, you may end up being stumped as to why your drive says it's not full when you have no space left!  Here's how you can find out...
Microservice architecture adoption brings many advantages, but can add intricacy. Selecting the right orchestration tool is most important for business specific needs.
This tutorial will show how to push an installation of Backup Exec to an additional server in both 2012 and 2014 versions of the software. Click on the Backup Exec button in the upper left corner. From here, select Installation and Licensing, then I…
This tutorial will walk an individual through locating and launching the BEUtility application and how to execute it on the appropriate database. Log onto the server running the Backup Exec database. In a larger environment, this would generally be …

863 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

Need Help in Real-Time?

Connect with top rated Experts

26 Experts available now in Live!

Get 1:1 Help Now