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Windows Speed Secrets

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NetworkSecurityHacks

About Book :
This information-packed book provides more than 100 quick, practical, and clever things to do to help make your Linux, UNIX, or Windows networks more secure. Loaded with concise but powerful examples of applied encryption, intrusion detection, logging, trending, and in!!cident response, Network Security Hacks demonstrates effective methods for defending your servers and networks from a variety of devious and subtle attacks.

To the uninitiated, the title may seem like an oxymoron: after all, aren't hacks what network security is supposed to prevent? But if you're network administrator, this book's title not only makes sense; it makes a lot of sense. You know that a busy administrator needs a Fhatful of devilishly effective security hacks to keep your 12-hour days from becoming all-nighters. Network Security Hacks is not a long-winded treatise on security theory. Instead, this information packed little book provides 100 quick, practical, and clever things to do to help make your Linux, UNIX, or Windows networks more secure today. This compendium of security hacks doesn't just cover securing TCP/IP-based services, but also provides intelligent host-based security techniques. Loaded with concise but powerful examples of applied encryption, intrusion detection, logging, trending, and incident response, Network Security Hacks will demonstrate effective methods for defending your servers and networks from a variety of devious and subtle attacks. Network Security Hacks show how to detect the presence (and track every keystroke) of network intruders, methods for protecting your network and data using strong encryption, and even techniques for laying traps for would-be system crackers. Important security tools are presented, as well as clever methods for using them to reveal real, timely, useful information about what is happening on your network. O'Reilly's Hacks Series reclaims the term "hacking" for the good guys--innovators who use their ingenuity to solve interesting problems, explore and experiment, unearth shortcuts, and create useful tools. Network Security Hacks lives up to reputation the Hacks series has earned by providing the "roll-up-your sleeves and get-it-done" hacks that most network security tomes don't offer. Every hack can be read in just a few minutes but will save hours of searching for the right answer. Using just one of these amazing hacks will make this slim book's price seem like a remarkable deal. The other 99 make Network Security Hacks absolutely invaluable.


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Interesting Facts Which You dont know

1. What programming language is GOOGLE developed in?

Ans:Google is written in Asynchronous java-script and XML, or its acronym Ajax .

2. What is the expansion of YAHOO?
Ans:Yet Another Hierarchy of Officious Oracle

3. What is the expansion of ADIDAS?

Ans:ADIDAS- All Day I Dream About Sports

4. Expansion of Star as in Star TV Network?

Ans:Satellite Television Asian Region

5. What is expansion of "ICICI?"

Ans:Industrial credit and Investments Corporation of India

6. What does "baker's dozen" signify?

Ans:A baker's dozen consists of 13 items - 1 more than the items in a normal dozen

7. The 1984-85 season. 2nd ODI between India and Pakistan at Sialkot - India 210/3 with Vengsarkar 94*. Match abandoned. Why?

Ans:That match was abandoned after people heard the news of Indira Gandhi being killed.

8. Who is the only man to have written the National Anthems for two different countries?

Ans:Rabindranath Tagore who wrote national anthem for two different countries one is our 's National anthem and another one is for Bangladesh- (Amar Sonar* *Bangla)

9. From what four word expression does the word `goodbye` derive?

Ans:Goodbye comes from the ex-pression: 'god be with you'.

10. How was Agnes Gonxha Bojaxhiu better known?

Ans:Agnes Gonxha Bojaxhiu is none other Mother Teresa.

11. Name the only other country to have got independence on Aug 15th?

Ans:South Korea .

12. Why was James Bond Associated with the Number 007?

Ans:Because 007 is the ISD code for Russia (or the USSR , as it was known during the cold war)

13. Who faced the first ball in the first ever One day match?

Ans:Geoffrey Boycott

14. Which cricketer played for South Africa before it was banned from international cricket and later represented Zimbabwe ?

Ans:John Traicos

15. The faces of which four Presidents are carved at Mt.Rushmore?

Ans:George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln

16. Which is the only country that is surrounded from all sides by only one country (other than Vatican )?

Ans:Lesotho surrounded from all sides by South Africa .

17. Which is the only sport which is not allowed to play left handed?

Ans:Polo

Enable Multiple Concurrent Remote Desktop Connections or Sessions in Windows XP

Windows XP Professional and Windows XP Media Center Edition (MCE) has Remote Desktop (RDP) service that allows the computer to be remotely connected, accessed and controlled from another computer or host. However, Windows XP machine only allows one concurrent remote desktop connection from a single user been connected to it with no multiple remote desktop sessions or connections support.

Whenever there is a remote user who user Remote Desktop Connection (RDC) client to connect to a Windows XP host, the local user is disconnected with the local console screen locked, with or without his or her permission. Remote Desktop, unlike Terminal Server Services in Windows 2000, Server 2003 and Server 2008, is designed for single user use only, no matter it’s local or remote user.

Here’s a hack to unlock the single user limitation and enable multiple concurrent remote desktop connection sessions support in Windows XP Professional and Media Center Edition, using a either a patched termserv.dll or old patched cracked termserv.dll build version version 5.1.2600.2055, so that unlimited users can simultaneously connect to a computer via Remote Desktop.

  1. Download a copy of patched termsrv.dll (in ZIP file) which has the Remote Desktop connection limitation deactivated for your version of Windows XP:

    Windows XP RTM, SP1 and SP2: termsrv.dll (version 5.1.2600.2055)
    Windows XP SP2: termsrv.dll (version 5.1.2600.2180)
    Windows XP SP3: termsrv.dll (version 5.1.2600.5512)

    For information, the termsrv.dll patch normally has the following HEX code bits overwritten with following value:

    00022A17: 74 75
    00022A69: 7F 90
    00022A6A: 16 90

  2. Restart the computer and boot info Safe Mode by pressing F8 during initial boot up and select Safe Mode. This step is only required if you’re currently running Windows Terminal Services or Remote Desktop service, and System File Protection has to be skipped and bypassed, else it will prompt the following error message to restore the original termsrv.dll.

    Windows File Protection

  3. Go to %windir%\System32 and make a backup copy (or rename) the termsrv.dll.
  4. Rename or delete the termserv.dll in the %windir%\System32\dllcache folder.
  5. Copy the downloaded termsrv.dll into %windir%\System32, %windir%\ServicePackFiles\i386 (if exist) and %windir%\System32\dllcache.
  6. Then download and run the ts_multiple_sessions.bat (in ZIP file) to merge the registry value into registery, or you can run Registry Editor to manually add the following registry value:

    [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\Licensing Core]
    “EnableConcurrentSessions”=dword:00000001

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
    “EnableConcurrentSessions”=dword:00000001

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
    “AllowMultipleTSSessions”=dword:00000001

  7. Click on Start Menu -> Run command and type gpedit.msc, follow by Enter to open up the Group Policy Editor.
  8. Navigate to Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services.
  9. Enable Limit Number of Connections and set the number of connections to 3 (or more). The setting allows more than one users to use the computer and logged on at the same time.
  10. Ensure the Remote Desktop is enabled in System Properties’ Remote tab by selecting the radio button for Allow users to connect remotely to this computer.
  11. Enable and turn on Fast User Switching in Control Panel -> User Accounts -> Change the way users log on or off.
  12. Restart the computer normally.

Note that if you cannot replace or overwrite termserv.dll with access denied or file in use error, turn off the “Termine Services” in “Services” control panel of “Administrator Tools”. Besides, each connecting physical connections must have their own user account in the target host, and must authenticate with corresponding own user name and password credential.

To uninstall and revert back to original termsrv.dll, simply delete the patched version, and rename the backup copy back to “termsrv.dll”. You probably have to do it in Safe Mode if the Terminal Services is enabled and running.

If the Windows XP computer is connected to a domain on local networks, Windows will set the value of the regkey “AllowMultipleTSSessions” to “0″ every time the computer is restarted. To ensure that multiple or unlimited Remote Desktop connection sessions is allowed in AD domain environment, the value data for “AllowMultipleTSSessions” has to be set to “1″ on each system startup. To change the value, simply rerun the ts_multiple_sessions.bat every time the computer is started. Alternatively, put the ts_multiple_sessions.bat at C:\Documents and Settings\All Users\Start Menu\Programs\Startup folder so that it will be automatically run on first user with administrative privileges that logs on to the desktop. Another workaround is to install additional service or define a sub-key in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run registry branch that run the registry batch file automatically on boot up, and this is useful if the computer won’t be logged on by anybody, but still requires the hack to allow unlimited Remote Desktop users to work.

Another issue is that if user closes the remote connection instead of logging off, when he or she tries to log back in, an error message related to TCP/IP event ID 4226 may occur. To resolve the issue, download and apply the Windows XP TCP/IP connection limit and Event ID 4226 patch, and set the connections to at least 50.