The Discussion Of Internet Printing Monitoring System

The stakeout and control of printer is a novel question for discussion, and theinternet printing is a uptrend in current time. But how to manage the printer frominformation security point of view will discuss in this dissertation.Now there are many ways of printer connected, and the office network is alsopresent many modality. So the print mode is multiplicity too. Except printing in localprinting, the main mode is shared printing and internet printing. In fact, sharedprinting is same with local printing in a way. At the same time the internet printingprotocol is developing now. So how to ensure the information security of the internetprinter, and how to manage the internet printer in a more large network effective.These are all hot potato.In this paper, firstly we introduce the main work mode of current printer. And thepoint is what is shared printing and internet printing and the distinguished from them.After that we talked about the IPP. And we talked the theory of internet printing.Fallow that is the printing flow in Windows system. And we showed how the GDIworked and how to use the API function.Aimed at the internet printing and according the roles of Internet PrintingProtocol, we bring forward two cases. The first blue print is to send the request toprint server according to IPP format. In another words, we first send the IPP requestform computer to print server. And then we received the response package form theprint server. According to the response package we can get the printing time, theprinting IP, the printing text name etc. At the same time, we show the advantage andthe disadvantage of this case. We also show the appropriate network status. And whatis the main problem if we really actualize this case. The second way to manage theinternet printer is to catch the IPP package in internet. How to get the networkpackage is not a fresh problem. But catching the IPP package is not usually. In theexperimentation we use the popular opening code Ethereal. After we got the IPPpackage, we can get the printing time, the printing IP, the printing text name etc also.And in the data field is the EMF file.But if the printers which we want managed is all in a small network. It's like theprinters in a small building. How to manage the printer? The first way is to use thevirtual print driver. In this way all computer in the network which we controlledinstall the virtual print driver. So that all printing job will not really print with localsystem. The real print driver worked on one computer and all printing job will printedthrough this computer. The virtual print driver can translate the .doc to EMF file orBMP file or PDF file etc.. And it can get the content of the document. So that we cancheck the document before it printed. But how to check the content is anotherproblem.If the document is English text, we have mature algorithms likeKnuth-Morris-Pratt algorithms or Boyer-Moore algorithms. But what we faced isChinese word. So according the character of Chinese word we raise a new kind ofalgorithms. With this algorithms we can matching the Chinese word convenient.