Comprehensive interpretation of Windows XP system services

When you optimize your Windows XP system, you need to turn off some of the less-common services, but what do they do in a number of service projects? Can you shut it? This often annoys many beginners. This detailed reading of XP system services, which is collected here, is expected to help friends who need to optimize the system.

1, Alerter

The process name of the Alerter (alert) service is Service.exe (that is, the name of the process running in the background after the service is started, as can be seen through Task Manager, below). The function of the Alerter service is to WinXP the management-related events that occur on the system to a designated computer or user on the network, such as when a print error occurs or when a hard disk is about to be filled, such warning messages are served by the WinXP's warning device (Alerter Service) collection, send out. Although the Alerter dependent service does not have Messenger (Messenger) service, the Alerter service must rely on the latter to send out information, so after starting the Alerter service it must also be determined that the Messenger service is working. The receiving computer must also start the Messenger service. Since the Alerter service is running, the service is the user can send "pop-up (pop-up)" Information to other users, this information may be used by attackers to carry out attacks, such as tricking users to modify passwords, etc., resulting in security risks. At the same time, the service causes the user account to leak, also may be exploited by the attacker to carry on the password guessing attack. So for the home single user, even for the vast majority of small LAN, this function is completely disabled, not only save the system resources and speed up the start-up speed, but also improve the security of the machine.

2. Application Layer Gateway Service

The process name for the abbreviation "ALG" (Application-tier Gateway) is ALG.EXE,WINXP Home/pro The default installation is manually initiated. ALG, also known as Proxy Server, is a kind of network firewall classification from the functional level. When an internal computer is connected to an external host, the proxy server acts as a connection relay between the internal computer and the external host. The advantage of using ALG is to hide the address of an internal host and to prevent an external abnormal connection, and any packets that belong to this network service will not pass through the firewall if the agent designed for the application is not installed on the proxy server. Popular point, specifically to the ALG itself, it is the accompanying Internet Connection Sharing/firewall specific control program, if you need to start both, this service is necessary. Of course, only one computer's Internet home can consider disabling the service, but the WinXP built-in firewall effect is good, if not insist on using a third-party firewall, or open it.

3, Application Management

The process name of the Appment (Application Management Service) is SVCHOST.EXE,WINXP Home/pro the startup type of the default installation is manual, and there is no dependent service relationship. Starting with Win2000, Microsoft introduced a new, effective software management solution based on the MSI file format (application installation information package file)-The Application Management component service (application Management), which not only manages the installation and deletion of software, This service can also be used to modify, repair, and monitor file recovery and to troubleshoot basic failures through demobilization. Usually this service we keep its default state better.

May be many friends have the impression, when ACDSee4.0 just released, due to the installation of the production of ill-conceived, and did not consider that time most people's system does not support the MSI installation format, the results have to download and install a named Windows Installer MSI helper file to solve the problem. Software that is typically installed in the MSI file format is very well recognized, for example, Office XP, when you run the Software installation program again, it will typically have "reinstall", "Repair Software", "Uninstall Software" multiple options, rather than the previous installer that simply uninstall or overwrite the installation.

4, Automatic Updates

The process name of the Wuauserv (Automatic Update Service) is SVCHOST.EXE,WINXP Home/pro the startup type of the default installation is automatic and there are no dependent service relationships. This is everyone is very familiar with the system Automatic Update function, do not say more. Use kitten to surf the internet and suffer its bitter friends remember that shutting down in system properties is not enough, and Automatic Updates the service is disabled. Later need to update, directly in IE, enter the Windows Update Web site address http://v4.windowsupdate.microsoft.com/zhcn/default.asp Manual update can be.

5, Background Intelligent Transfer Service

The process name for BITS (Background Intelligent Transfer Service) is SVCHOST.EXE,WINXP Home/pro the startup type of the default installation is manual, dependent on remote Procedure call, Workstation service. Microsoft claims that BITS can transfer files using the remaining bandwidth, and when the network shuts down or the computer restarts, the Background Intelligent Transfer Service automatically maintains the file transfer, and when the network is reconnected, the Background Intelligent Transfer Service continues to transfer files from where it stopped. In fact, this service is used to achieve the information transmission between the HTTP1.1 server, and basically its application is to support Automatic Updates when the breakpoint continued transmission. If you disable automatic Updates, it doesn't make sense to keep it.