Understanding Web page plug-ins and application analysis

Web page at present, many sites are using Microsoft's plug-in technology, in the user's computer to install plug-in form of the client to complete the established task. For example, most online banks in the first use of users need to install plug-ins, otherwise not normal use, there are many Web sites or other programs also use plug-in technology to "entrap" users. Let's take a look at some of the most popular questions about Web Plug-ins today.

　　 1. What is a Web page plugin?

Web page plug-ins are mostly ActiveX Plug-ins (formerly known as OLE controls or OCX controls), it is actually some software components or objects, can be inserted directly into a Web page or other applications, the general software requires users to download and then perform the installation, The ActiveX plugin is when the user browses to a specific page, the browser automatically downloads and prompts the user to install. Like today's online antivirus, flash animation, Windows Media player plug-in, etc. are ActiveX plug-ins (see Figure 1).

　　

　　 2. Does the plugin have an impact on Windows?

When you use a browser to log on to some irregular websites (especially some English websites), sometimes a window like Figure 1 pops up. The window content is usually lure you install an ordinary, fun, practical plug-in program, and it will have a lot of benefits after installation. If you can not afford temptation or do not look carefully click on the "Installation", it is likely that viruses, Trojans will take advantage of, such as the QQ Hunter virus is done.

Some of the consumption of system resources is very large. Open a Web page with Plug-ins, because the automatic download of ActiveX Plug-ins to the hard disk, so will seriously slow down the page opening speed, the Web page open for a long time, no response, and even the computer animation, and so on, must go to the control Download complete pop-up installation dialog box will return to normal, Even faster broadband users will be delayed for a few seconds, and users with slower connections will spend more time. Also, some ActiveX Plug-ins can modify the system configuration and even conflict with each other, affecting windows stability.

In addition, because the ActiveX control in the Web page can run various programs in the background, invoke Java script, download installation virus, open system port, etc., so it is easy for hackers to use, modify or delete your registry entries, arbitrary read and write, delete files, etc.

　　 3. How do I know what plugins are installed on my computer?

(1) Plug-in manager for Windows XP SP2

After installing Windows XP SP2, its built-in plugin manager allows you to manage related plug-ins, select the Programs tab in the IE Options window, and then click the Manage Add-ins button. Here you can "enable", "Disable" related add-ons, and update them with some plug-ins, but you cannot uninstall a plug-in through it.

(2) Professional plug-in management program

If you want to get more professional plug-in management functions, recommend you use UPIEA (ie plugin screen), download address: http://nj.onlinedown.net/soft/35733.htm. Software can be used directly without installation, after decompression, the program will automatically search and list the Plug-ins already installed in the current system and provide uninstall function (see Figure 2).

　　

　　 4. How can I get rid of those annoying web plug-ins?

(1) Join a restricted site

Open IE, click "Tools →internet options → security", select Restricted sites, and then click the Site button below to enter the *. URL in the text box in the pop-up window, and then click the Add button, which you can use to add Web plug-ins that are common and that you do not want to see. This method, however, pops up a dialog box when you open a restricted Web site, stating that the Web page ActiveX control is disabled and click OK to continue browsing.

(2) Give full play to the firewall function

Some firewall software provides the function of anti-malicious webpage plug-in, suggest to look for in its setting window, for example, such as "Scan for downloading ActiveX", "Prohibit dangerous webpage function download" And so on to help you to a certain extent to prevent undesirable plug-ins.

(3) The ultimate way: Using UPIEA 2005

Although the above methods are effective, but there are deficiencies, it is recommended to use Upiea 2005来 for IE perfect plug-in immunization and site immunization (in fact, the problem of the site is added to the Restricted Sites list).

First click on the left of the "plugin immune" button, and then click the "Recommended" button under the window, so that the software will automatically select the general user does not need plug-ins, carefully check and click the "Apply" button to complete the immunization.

Click the Site Immunization button, click the Select All button under the Limit Sites tab, and then click Apply.

Small Tips

UPIEA 2005 also supports editing the Hosts file feature, for example, to screen Taobao automatically open the page, you can click the "Site Immunization" button, enter the "Restricted Access" tab, click the "Add" button, in the pop-up dialog box "to the IP" column type "127.0.0.1", in the "Domain Name" column input "Www.unionsky.cn #淘宝网广告代理", the same method setting adds "Www.allyes.com #淘宝网广告代理".

If you are using Maxthon browser, just open "option → advertising Hunter → enable ads content filter" can filter Taobao.

　　 5. Why can't I use online banking?

Every online bank now needs to install its client-side plug-in program for the first time, and it will not work if it is not installed successfully. Windows XP SP2 and some of the plug-in screen programs installed on the system will block the installation of online banking plug-ins. If you are using Windows XP SP2, first you should open IE, click "Tools →internet options → security", then click the "Custom Level" button, in the Open Security Settings window, under ActiveX controls and plugins, the setting of all items is selected as prompt (see Figure 3). In this way, when you open the Online banking page, if the plugin has not been installed before, the system will show whether to install the Plugin prompt window, select "Yes" can be.

　　

Open Upiea 2005, click on the "Plug-ins" button, then go to the "Daily" tab, cancel those already immune to the check of the Bank project, and then press the "application", so that the Internet bank plug-ins will not be blocked.