TCP/ IP PORTS

1 TCP Port Service Multiplexer (TCPMUX)
5 Remote Job Entry (RJE)
7 ECHO
18 Message Send Protocol (MSP)
20 FTP -- Data
21 FTP -- Control
22 SSH Remote Login Protocol
23 Telnet
25 Simple Mail Transfer Protocol (SMTP)
29 MSG ICP
37 Time
42 Host Name Server (Nameserv)
43 WhoIs
49 Login Host Protocol (Login)
53 Domain Name System (DNS)
69 Trivial File Transfer Protocol (TFTP)
70 Gopher Services
79 Finger
80 HTTP
103 X.400 Standard
108 SNA Gateway Access Server
109 POP2
110 POP3
115 Simple File Transfer Protocol (SFTP)
118 SQL Services
119 Newsgroup (NNTP)
137 NetBIOS Name Service
139 NetBIOS Datagram Service
143 Interim Mail Access Protocol (IMAP)
150 NetBIOS Session Service
156 SQL Server
161 SNMP
179 Border Gateway Protocol (BGP)
190 Gateway Access Control Protocol (GACP)
194 Internet Relay Chat (IRC)
197 Directory Location Service (DLS)
389 Lightweight Directory Access Protocol (LDAP)
396 Novell Netware over IP
443 HTTPS
444 Simple Network Paging Protocol (SNPP)
445 Microsoft-DS
458 Apple QuickTime
546 DHCP Client
547 DHCP Server
563 SNEWS
569 MSN
1080 Socks

HACKING

CONCURRENT REMOTE DESKTOP SESSIONS IN WINDOWS XP SP2
I mentioned before that Windows XP does not allow concurrent sessions for its Remote Desktop feature. What this means is that if a user is logged on at the local console, a remote user has to kick him off (and ironically, this can be done even without his permission) before starting work on the box. This is irritating and removes much of the productivity that Remote Desktop brings to Windows. Read on to learn how to remove that limitation in Windows XP SP2
A much touted feature in SP2 (Service Pack 2) since then removed was the ability to do just this, have a user logged on locally while another connects to the terminal remotely. Microsoft however removed the feature in the final build. The reason probably is that the EULA (End User License Agreement) allows only a single user to use a computer at a time. This is (IMHO) a silly reason to curtail Remote Desktop's functionality, so we'll have a workaround.
Microsoft did try out the feature in earlier builds of Service Pack 2 and it is this that we're going to exploit here. We're going to replace termserv.dll (The Terminal Server) with one from an earlier build (2055).
To get Concurrent Sessions in Remote Desktop working, follow the steps below exactly:
1. Download the termserv.zip file below and extract it somewhere. (You have to be registered to see the file)
2. Reboot into Safe Mode. This is necessary to remove Windows File Protection.
3. Copy the termserv.dll in the zip to %windir%\System32 and %windir%\ServicePackFiles\i386. If the second folder doesn't exist, don't copy it there. Delete termserv.dll from the dllcache folder: %windir%\system32\dllcache
4. Merge the contents of Concurrent Sessions SP2.reg file into the registry.
5. Make sure Fast User Switching is turned on. Go Control Panel -> User Accounts -> Change the way users log on or off and turn on Fast User Switching.
6. Open up the Group Policy Editor: Start Menu > Run > 'gpedit.msc'. Navigate to Computer Configuration > Administrative Templates > Windows Components > Terminal Services. Enable 'Limit Number of Connections' and set the number of connections to 3 (or more). This enables you to have more than one person remotely logged on.
7. Now reboot back into normal Windows and try out whether Concurrent Sessions in Remote Desktop works. It should!
If anything goes wrong, the termserv_sp2.dll is the original file you replaced. Just rename it to termserv.dll, reboot into safe mode and copy it back.
The termserv.dl_ file is provided in the zip is for you slipstreamers out there. Just replace that file with the corresponding file in the Windows installation disks.
Attachment Size

Attachment
Size
termserv.zip
357.92 KB
357.92 KB
OR
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 its 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.

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.