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IPS Change management process
From: eslerj at gmail.com (Joel Esler)
Date: Thu, 21 May 2009 12:08:58 -0400
On Thu, May 21, 2009 at 10:07 AM, Dan Baxter <danthemanbaxter at gmail.com>wrote:
The company I work for is in the process of spinning up an IPS solution. It's been a long time in coming and overdue, but we finally got the budget approval. Anyway, I'm developing the rules management process and have a few questions. We're a large, international company with many different applications running on our WAN. With many different application owners that may or may not know which address & ports the apps require for operation. As a result, our management, while recognizing the need for the project, are nervous that it will cause problems by blocking legitimate traffic. I'd like to know some of the items that should go into a good change management process for adding/modifying rules to an IPS. Our plan is to place the devices into IDS mode for a time to get to know our network better, but eventually we will turn blocking on. From the time a ruleset gets released by the vendor, to the rules getting implemented on the actual devices, what are the steps you guys may be taking. I appreciate any input. Thanks!
I suggest just what you are doing (IDS, then move to IPS -- or if you have a device like ours (Sourcefire) you can go to an IPS "Tap" mode), I've seen many organizations try and implement change management around IDS and IPS, most of which, just breaks process and hinders things. I try to encourage organizations to treat IDS rules like Antivirus. Update them, quickly, and often. Then have a change management talking about which of the rules on your *IPS*'s you are going to move to a blocking mode. Determine what you need to drop, and drop them. Then determine what you * want* to drop, and drop that. There is a big difference. J -- joel esler | Sourcefire | gtalk: jesler at sourcefire.com | 302-223-5974 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.pauldotcom.com/pipermail/pauldotcom/attachments/20090521/99c7e029/attachment.htm
Current thread:
- IPS Change management process Dan Baxter (May 21)
- IPS Change management process Joel Esler (May 21)
- IPS Change management process Michael Dickey (May 21)
- IPS Change management process Michael Douglas (May 22)