Depth of detection, as shown with the core

Traditional firewalls can not do, O2Micro new smart firewall but can be done.



O2Micro Application topology

With the development of economic globalization and the information system development, the network has become the work and life around us, an indispensable element. Ever since the birth date of the network, viruses, spam and hacker attacks the network has never stopped, but as networks increase in size and complexity of these discordant elements into the network more and more people feel a headache in the composition . The growth of the network will promote the application of systems and software grows, the network has grown from the original development of the interoperability of multiple data multi-service bearer. Traditional firewall products have been unable to present a very popular BitTorrent and other P2P software testing, and not to mention the speed limit on, we take a look at how to use the new intelligent type of software firewall to control access.

BitTorrent is a more open source P2P download the software, designed for large file sharing and design. In short, the characteristic is: The more people download, the faster. Then the BitTorrent and our traditional software to upload and download any different? In general, the download is to transfer files from the server to the client, such as FTP, HTTP, PUB and so on. However, there is a problem of this download method - with the increase of users, bandwidth requirements will increase, and the user will cause the server over a network bottleneck. Therefore, many of the server the number of users have downloaded and download speed limits, which has had to download the user inconvenience caused. The emergence of BitTorrent solves this problem. BitTorrent is used as the mode of transmission to achieve resource sharing files, using BitTorrent to download the contrary, the more people download faster. BitTorrent, the work process consists of several parts, first is the client access to. Torrent file, which contains the server address and other information released, the client is connected, by the distribution server to get to the tracker program that can track how many people at the same time in the end download the same file. Client connected to the tracker server, you get a download list of personnel may, according to this, BT will automatically connect to another machine to download. Finally the client side using Scokets Peer connection to download content. This client with all the Peer to establish Sockets connection, connecting more, download faster, but the more network bandwidth consumption. This data transfer model, network operators and users have put enormous pressure on the ensuing contradictions. Traditional firewall products, due to its inherent design structure, not on the BitTorrent P2P software such testing, it is not possible to limit the speed. The current operator China Netcom, the Great Wall of broadband and other commonly used through the sealing of BitTorrent port (6881-6889,8881-8899 or 6969) to carry out the restrictions on the BitTorrent software, but by modifying the registry or the BitTorrent settings, users can easily modify the BitTorrent port to avoid ISP blocking ports on BitTorrent. Therefore, by simple blockade of the traditional firewall is no sense.鍙﹀BitTorrent杩欑被杞欢濡傛灉瀹㈡埛绔湪鍐呯綉锛屼粬涔熷彲浠ヤ负鍏朵粬浜烘彁渚涗笅杞芥湇鍔★紝瀹㈡埛绔鍏堟姤鍛婄粰鍙戝竷鏈嶅姟鍣紝Peer绔篃鎶ュ憡鍙戝竷鏈嶅姟鍣ㄥ叕缃戠殑淇℃伅锛屽鎴风鍦ㄧ瓑寰呬竴娈垫椂闂村悗锛岃繛鎺ユ湇鍔″櫒鑾峰緱Peer绔殑淇℃伅锛岀劧鍚庡畠浣跨敤鍙嶅悜Sockets杩炴帴鍚庯紝鍙互涓哄缃慞eer绔彁渚涗笅杞芥湇鍔★紝杩欐牱鏋佸ぇ鍦板缃戠粶瀹夊叏鏋勬垚濞佽儊銆傝繘杩戜緷闈犱紶缁熼槻鐏鏄棤娉曞杩欐牱缁撴瀯鐨勮闂繘琛岄檺鍒剁殑銆?br />
鑰孫2Micro鍏徃浣跨敤鑷富鐮斿彂ASIC鑺墖鐨凷ifoWorks闃茬伀澧欏垯鍦ㄦ牴鏈笂瑙ｅ喅浜嗕笂杩伴棶棰橈紝鐪熸杈惧埌浜嗘繁搴︽娴嬶紝闅忚姱鎵?銆傞鍏堬紝渚濋潬鑹ソ璁捐鐨凙SIC澶勭悊鑺墖锛孲ifoWorks闃茬伀澧欒兘澶熷湪100涓囪繛鎺ュ缓婊＄殑鎯呭喌涓嬶紝渚濈劧淇濇寔鍗冨厗绾块?澶勭悊鑳藉姏銆傚叾娆★紝SifoWorks鏈夊緢濂界殑Anti-DDOS鍔熻兘锛岃兘澶熷缃戠粶涓殑鏀诲嚮琛屼负鎻愬墠杩涜妫?祴鍜岄槻鑼冿紝淇濊瘉缃戠粶鐨勭晠閫氾紝鍐充笉鍫靛銆傛渶閲嶈鐨勬槸锛孲ifoWorks闃茬伀澧欏唴缃殑鍥涘眰鏅鸿兘闃插尽绯荤粺锛岄?杩囩晫闈㈤厤缃殑淇敼浼犻?缁橝SIC鑺墖寰爜澶勭悊闃靛垪锛岃兘澶熷鏁版嵁鍖呰繘琛屾繁灞傛鐨勮繃婊ゅ拰妫?祴锛岄?杩囧BitTorrent瀹㈡埛绔笌tracker鏈嶅姟鍣ㄤ箣闂寸殑TCP杩炴帴杩涜杩囨护鐩戞帶锛屼粠鑰屾湁鏁堢殑鎺у埗浜嗗鎴风鍜孭eer绔缓绔婼ockets杩炴帴鐨勮繃绋嬨?閫氳繃SifoWorks鐨凲oS鍔熻兘锛岃兘澶熷叿浣撳姣忎釜绔彛浜х敓鐨勮繛鎺ユ寜浼樺厛绾т骇鐢熷鍒楋紝淇濊瘉浜嗙綉缁滃叧閿暟鎹殑甯﹀鍜岄?搴︺?浠庝笂闈ifoWorks闃茬伀澧欏BitTorrent杞欢鍙互鐪嬪嚭锛孲ifoWorks 闃茬伀澧欐槸涓?楂樻晥銆佸畨鍏ㄣ?闆嗗鍔熻兘涓轰竴韬殑鏂板瀷鏅鸿兘闃茬伀澧欒澶囥?







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Skillfully under Win2000 NTFS password

The first step, download NTFSDOS Professional software, download to install, after install NTFSDOS Professional Boot Disk Wizard process, the wizard will be prompted to turn into two floppy disks, in fact, is available to the first.

The second step, a floppy disk or CD-ROM boot disk with the Win98 machine to a DOS state and then insert the floppy disk has been doing a good job of NTFSDOS first, the implementation of Ntfspro.exe file, it will start automatically analyze the current partition table, if there is NTFS partition information , then it will turn out NTFS partition for each letter (this time with the machine if the alarm sounds, do not panic, because at this time may be an NTFS partition on your root directory has a directory of Chinese presence in DOS in it may be considered illegal directory).

The third step is removal Win2000 user password. In the DOS drive letter where the state into the WinNT, usually C,. Into the% root% system32config directory (% root% refers to the partition where the path WinNT), manually delete the SAM file, so that all user passwords can be cleared Win2000.

The fourth step is only required to hot start the machine, carriage returns, you can normally enter a Win2000






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C # drag and drop source Xiangjie 1

The operating practices, we can Windows applications users are divided into two categories, first is preferred to use the keyboard of the user, the second is the preference of the user using the mouse. Experience for many programmers to fully understand, be sure to provide hot key (underscore will show the rapid character key) and the shortcut key (for example: Ctrl + key combination of a character) to a large number of users using the keyboard, but but often ignore the mouse users. As the programmers themselves tend to keyboard users, so special emphasis on the function-oriented keyboard is understandable, but every programmer should also take into account the full support of the mouse is.

In fact, most users expect the mouse is on the full support of drag and drop. However, closer inspection the majority of Windows applications or Windows operating system itself, we find that drag and drop capability is everywhere. For example, the user is already accustomed to Windows Explorer, drag and placement of files and drag in Microsoft Word and text placed.

Unfortunately, only a very small number of Visual C # programmers will develop their applications with complete drag and drop function, of course, one of the reasons causing this phenomenon is to achieve drag and drop functionality does have its difficulty and complexity. This section will let you know to use Visual C # 2003 ~ 2005 version after the release function of real drag is how a simple thing. We will show how the actual window inside the body, between the form and move between the application and copy text, pictures and documents.

Drag and drop operation is how it works

Drag and drop actually cut and paste (or copy and paste) is no different, but it is to use the mouse instead of using the keyboard. In both operations, you will have a source (that is, you cut or copied object) and a target (that is, between you paste). No matter what kind of operation, during operation, the data will exist in memory a copy. Cut and paste will be used to the clipboard, and drag and drop to a DataObject object will be used, in fact, DataObject object is like a private clipboard.

In a typical drag and drop operation will cause the following event sequence:

1. You can call the source control DoDragDrop method to initialize the drag operation. DoDragDrop method syntax is as follows:

DragDropEffects DoDragDrop (

Object data,

DragDropEffects allowedEffects) DoDragDrop method will accept the following two parameters:

A new DataObject object will automatically be created.

2. Then lead to the source control GiveFeedback event. In most cases, you do not need to deal with GiveFeedback event, but if you want to display a custom during drag the mouse pointer, you can write GiveFeedback event handler code to complete the set.

3.AllowDrop property is set to True, any controls can be placed target. You can design the "Properties" window as the target control to AllowDrop property set to True, or is in the operational phase in the form Load event handler as the target control will be set to AllowDrop property True.

4. When you move the mouse pointer over any control, it will lead to the control of the DragEnter event. We usually target the control of the DragEnter event handler, use the GetDataPresent method to detect whether the drag data format for the target control, and use the DragEventArgs type parameters allowed to set the Effect property of the placement operation.

5. If the user placed in a valid target release the mouse button, it will lead to target control DragDrop event. We usually target the control of the DragDrop event handler write the code, retrieve data from a DataObject object and displays the target control.

About drag and drop operation, you must note the following:

Some controls have custom drag-specific events. For example, ListView and TreeView control to have ItemDrag event. When a drag operation is being executed, you can handle QueryContinueDrag event, which will be the system "requires the use of permission" to continue to drag operation. When the time of that approach, but also a call to those who drag operation on the impact of the method is the right time. For example, when the mouse pointer over the top of the TreeView control when the start of a TreeNode. You can also define your own DataFormats. Approach is very simple, you need to specify your object SetData method of the Object parameter, specify the same time make sure the object is serializable. In addition, you can also use KeyState property in order to drag and drop operation according to the keys pressed during to produce specific results. For example, when Ctrl key is pressed, usually by dragging the data replication. Drag text

Drag operation is the simplest realization of a TextBox control to a certain move or copy text to another TextBox control. Of course, you can also use the copy or cut and paste operations between the two TextBox controls to copy or move data, but use the drag and drop to the completion of such action will definitely be more efficient.







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