Improving Web Application Security: Threats and - CGISecurity

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796 Improving Web Application Security: Threats and Countermeasures●●It removes the following virtual directories:●●●●●IIS SamplesMSADCIISHelpScriptsIISAdminIt restricts anonymous access to system utilities as well as the ability to write toWeb content directories. To do this, IISLockdown creates two new local groupscalled Web Anonymous Users and Web Applications and then it adds denyaccess control entries (ACEs) for these groups to the access control list (ACL) onkey utilities and directories.Next, IISLockdown adds the default anonymous Internet user account(IUSR_MACHINE) to Web Anonymous Users and the IWAM_MACHINEaccount to Web Applications.Note If you create custom, anonymous Internet user accounts, add them to theWeb Anonymous Users group.●●It disables Web Distributed Authoring and Versioning (WebDAV).It installs the URLScan ISAPI filter.Installing IISLockdownTo install IISlockdown, download it from the Microsoft Web site athttp://download.microsoft.com/download/iis50/Utility/2.1/NT45XP/EN-US/iislockd.exe.You can save it locally or run it directly by clicking Open when you are prompted. Ifyou save IISLockd.exe, you can unpack helpful files by running the followingcommand:iislockd.exe /q /cThis command unpacks the following files:● IISLockd.chm. This is the compiled help file for the IISLockdown tool.●●RunLockdUnattended.doc. This file includes instructions for unattendedIISLockdown execution.URLScan.exe and associated files. These files install URLScan without runningIISLockdown.exe.
How To: Use IISLockdown.exe 797Running IISLockdownIISLockdown detects the Microsoft .NET Framework and takes steps to secure.NET Framework files. Install the .NET Framework on your Web server before yourun IISLockdown.IISLockd.exe is not an installation program. When you launch IISLockd.exe, it runsthe IIS Lockdown Wizard. To run IISLockdown1. Run IISlockd.exe on your IIS Web server, click Next, and then read and accept thelicense agreement.2. For Web servers that host ASP.NET Web applications, select Dynamic Web server(ASP enabled) from the Server templates list.3. Select View template settings and then click Next.This allows you to specify the changes that the IIS Lockdown tool should perform.4. Select Web service (HTTP) and make sure that no other services are selected.5. Select Remove unselected services, click Yes in response to the warning messagebox, and then click Next.6. On the Script Maps page, disable support for the following script maps, and thenclick Next.●●●●Index Server Web Interface (.idq, .htw, .ida)Server side includes (.shtml, .shtm, .stm)Internet Data Connector (.idc).HTR scripting (.htr)● Internet printing (.printer)7. On the Additional Security page, select all of the available options.This causes IISLockdown to remove all of the listed virtual directories, configureNTFS permissions for the anonymous Internet account, and disable WebDAV.8. Click Next.9. On the URLScan page, select Install URLScan filter on the server.10. Click Next twice.IISLockdown updates your server configuration using the selected options.11. Click Next and then Finish to exit the tool.
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Contents xxvii.NET Remoting Securit
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Contents xxixStaying Secure (contin
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Contents xxxiASP.NET Architecture o
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Contents xxxiiiSummary ............
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Contents xxxvIndex of Checklists 68
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Contents xxxviiChecklistSecuring Da
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Contents xxxixHow ToIndex 743How To
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Contents xliRestricting Server-to-S
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ForewordsForeword by Mark CurpheyWh
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Forewords xlvForeword by Joel Scamb
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Forewords xlviiFinally, techniques
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Fast Track — How To Implementthe
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Part IIntroduction to Threats andCo
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3Threat ModelingIn This Chapter●
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Chapter 3: Threat Modeling 47Threat
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Part IIDesigning SecureWeb Applicat
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Part IIIBuilding Secure WebApplicat
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8Code Access Security in PracticeIn
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11Building Secure ServicedComponent
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Part IVSecuring Your Network,Host,
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18Securing Your Database ServerIn T
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21Code ReviewIn This Chapter●●
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22Deployment ReviewIn This Chapter
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Page 839 and 840: How To:Harden the TCP/IP StackAppli
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Page 885 and 886: How To:Use URLScanApplies ToSummary
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Page 918 and 919: patterns & practicesProven practice
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