Transcript Hardening Windows XP

HARDENING WINDOWS XP:
YOUR DEFINITIVE LOCKDOWN GUIDE
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WHAT IS A SERVICE PATCH?
This presentation will examine the following items and
how to lock them down step by step. This will enable your
XP system to be lean, mean and ready to do battle with
attackers of all types.
Windows XP Professional Configuration Checklist Details
1. Verify that all disk partitions are formatted with NTFS
2. Change Logging Settings
3. Disable Indexing Service
4. Protect file shares
5. Disable fast User Switching
6. Use software restriction policies
7. Disable unnecessary services
8. Keep up-to-date on the latest security updates
9. Use Security Baseline Analyzer
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BEST PRACTICE #1:
DISK PARTITIONS ARE FORMATTED WITH NTFS
Many older XP workstations still use the older less secure FAT, FAT32, or
FAT32x files systems. The enhanced NTFS file system offers greater
access controls and protections that aren't available with the FAT, FAT32, or
FAT32x file systems.
Make sure that all partitions on your computer are formatted using NTFS. If
necessary, use the “Convert Utility” to non-destructively convert your FAT
partitions to NTFS. Before running this utility always make a backup of
critical data, but that should go without saying!
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BEST PRACTICE #2:
CHANGE SYSTEM LOGGING SETTINGS
By default the system logging does not provide for extensive logging
activity. To change the system logging follow these steps:
1. Open Event Viewer
2. In the console tree, click the log you want to change.
3. On the Action menu, click Properties.
4. On the General tab, in Maximum log size, specify the new log size in
kilobytes. Change log sizes
5. Application: 81920, overwrite as needed
6. Security: 81920, overwrite as needed
7. System: 81920, overwrite as needed
8. To put the new setting in effect, click Clear Log.
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BEST PRACTICE #3:
DISABLE INDEXING SERVICE
Indexing Service is a base service for Microsoft Windows operating
systems that extracts content from files and constructs an indexed catalog
to facilitate efficient and rapid searching. Indexing Service can extract both
text and property information from files on the local host and on remote,
networked hosts. The files can be simply members of a selected file system
or part of a virtual Web hosted by, for example, Internet Information
Services (IIS). The index server has been a major vulnerability of the XP
operating systems. It is recommended to turn off this service unless
otherwise needed.
To disable the indexing service performs the following steps:
1. In the "Start" menu, choose "Run."
2. Type "services.msc" and press Enter.
3. Scroll-down to "Indexing Service" and double-click it.
4. If the service status is "Running", then stop it by pressing the "Stop"
button.
5. To make sure this service doesn't run again, under "Startup Type:",
choose "Disabled."
6. Windows search will still work if you perform these steps, but it will work
more slowly than if indexing was enabled.
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BEST PRACTICE #3:
DISABLE INDEXING SERVICE
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BEST PRACTICE #4:
PROTECT FILE SHARES
By default, Windows XP Professional
systems that are not connected to a
domain use a network access model called
"Simple File Sharing," where all attempts to
log on to the computer from across the
network will be forced to use the Guest
account. This means that network access
as well as Remote Procedure Calls (RPCS)
will only be available to the Guest account.
This can be a big vulnerability and has
been exploited by some the most widely
used attack tools targeting the Windows XP
OS.
1. To change it, go to: Start => Programs
=> Accessories => Windows Explorer
and drop down the Tools menu and
select ‘Folder Options’.
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BEST PRACTICE #5:
DISABLE FAST-USER SWITCHING
When multiple users share a computer, logging off and logging on to the
computer in order to switch users can become tiresome. Fast User
Switching, a feature that makes it possible for you to quickly switch between
users without actually logging off from the computer. Multiple users can
share a computer and use it simultaneously, switching back and forth
without closing the programs they are running. However, if you are not
sharing computers this feature should be disable.
To disable fast-user switching:
1. Go to control panel > User Accounts
2. Select “change the way users log in and out”
3. Click “Off” the option for “Use Fast User Switching”
4. Apply Changes
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BEST PRACTICE #5:
DISABLE FAST-USER SWITCHING
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BEST PRACTICE #6:
USE SOFTWARE RESTRICTION POLICIES
Software restriction policies provide administrators with a policy driven
mechanism that identifies software running in their domain, and controls the
ability of that software to run.
Using a software restriction policy, an administrator can prevent unwanted
programs from running; this includes viruses and Trojan horses, or other
software that is known to cause conflicts when installed.
Software restriction policies can be used on a standalone computer by
configuring the local security policy.
Software restriction policies also integrate with Group Policy and Active
Directory.
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BEST PRACTICE #7:
DISABLE UNNECESSARY SERVICES
Hardening Windows XP included turning off any network services not
required for normal operations. In particular, you should consider whether
your computer needs any IIS Web services.
By default, IIS is not installed as part of Windows XP and should only be
installed if its services are specifically required. It is recommended that if
you don’t need them, disable the following services ASAP:
1.
2.
3.
4.
5.
6.
7.
8.
Telnet
Universal Plug and Play Device Host
IIS (not installed by default)
Netmeeting Remote Desktop Sharing
Remote Desktop Help Session Manager
Remote Registry
Routing & Remote Access
SSDP Discovery Service
It is also recommend that the server service and computer browser be
eliminated if you are on a stand-alone machine connected to the Internet.
There is no practical use for them and leave you exposed.
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BEST PRACTICE #7:
DISABLE UNNECESSARY SERVICES
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Best Practice #9: Keep up-to-date on the Latest
Security Updates
The Auto Update feature in
Windows XP can automatically
detect and download the latest
security fixes from Microsoft. Auto
Update can be configured to
automatically download fixes in
the background and then prompt
the user to install them once the
download is complete.
To configure Auto Update, click
System in Control Panel and
select the Automatic Updates tab.
Choose the first notification
setting to download the updates
automatically and receive
notification when they are ready
to be installed.
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WHAT IS A PRODUCT FAMILY?
A product family is a collection of products that have a
related purpose. For instance, the Microsoft Windows®
product family includes all Windows operating
systems, such as Windows 3.11, Windows 95, and
Windows 2000.
A product is one member of a product family. For
instance, Microsoft Windows NT® is a product in the
Windows family.
A version is an instance of a product. For instance,
Windows NT 3.5, Windows NT 4.0, and Windows 2000
are different versions of the Windows NT product.
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SERVICE PACK VERSUS PATCHES
A service pack is a periodic update that corrects
problems in one version of a product. For instance,
there have been six service packs for Windows NT
4.0. Some Microsoft products use the term service
release rather than service pack, but the terms mean
the same thing.
A patch is an update that occurs between service
packs. A patch is sometimes also referred to as a
hotfix.
Note: Most patches are built to correct security
vulnerabilities, but we also build patches to correct
critical stability or performance issues. In this article,
though, we'll only discuss security patches.
http://technet.microsoft.com/en-us/library/cc723502.aspx
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WINDOWS UPDATE UTILITY WINDOWS 7
Click Start > Control Panel > Windows Update
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VIEW UPDATE INFORMATION WINDOWS 7
From the Windows Update window, click on a link to
view additional information on that update. The 1
important update was selected in this example,.
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Review the Update History
From the Windows Update Window, select View
Update History
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Frequently Asked Questions
From the Windows Update window, select Updates:
frequently asked questions to find out more
information
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Settings for Automatic Updates
From the Windows Update window, select Change
Settings
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Running Microsoft Baseline Security Analyzer
Sample Scan
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Additional System Information
• Links provide more information for a particular
issue
• Report can be printed for documentation
• Report can be copied to clipboard
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Administrative Vulnerabilities
Links are provided as to what was scanned, the result
details, and instructions on how to correct an issue.
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