Advanced Host Intrusion Prevention with CSA by Chad Sullivan

By Chad Sullivan

This e-book is meant for somebody at the moment utilizing the CSA product in addition to an individual focusing on its implementation. even if this publication is an invaluable source for the implementation and tuning groups, it additionally offers loads of details pertinent to undertaking managers and IS/IT managers who're tasked with overseeing a CSA venture or implementation.

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Sample text

The following examines these questions and discusses their implications. Having all your users in one location should typically eliminate all the other main issues. Local bandwidth is easy to come by (100 M Ethernet or Gigabit-Ethernet are fairly common). If your users are spread geographically, what might the CSA issues be? The CSA issues would be typical of any other software package and could be categorized as follows: regular bandwidth usage (in the case of CSA, sending events to the server and receiving notifications from the server) and other bandwidth usage (full policy updates, deployment of the initial agent software package, and software updates to the agent itself).

Web-based applications that download code (for example, QuickTest Pro, Lotus Sametime Web Collaboration Software, WebEx, and so on) or execute command shells—You might want to adjust your CSA policies to allow these applications to work properly without being denied or querying users too many times. For example, you would not want to allow a web browser to download and run any content from the network, but maybe this is acceptable from certain IP addresses. CSA allows you to make these decisions and easily adjust policies to cover these situations.

Install CSA on a clean system, establish a set of policies that track every action by any application on the system (such as any file write, read, application execution, buffer overflow, network connection attempt, and so on), but only monitor (logs) the actions. Then attempt to exploit or exercise the vulnerability on your test system to map all the actions taken by a particular piece of code. Note that this is best accomplished within a “safe” virtual PC environment such as VMWare, so that you can control the network access and ensure that you do not attack everyone else.

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