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計算機專業(yè)畢業(yè)外文翻譯-其他專業(yè)-展示頁

2025-01-31 02:26本頁面
  

【正文】 好準(zhǔn)備 要插入 “表 ”或 “數(shù)字 ” ,請粘貼下文所述數(shù)據(jù)。 在本文中,我們提出了一個方法,以確定操作系統(tǒng)的遠程主機。通過實驗,該方法 與 nmap and xprobe. 相比, 能準(zhǔn)確識別 遠程的主機的操作系統(tǒng)。 This paper present a method that classify the fingerprint of protocol(電腦之間通信與資料傳送所遵守的規(guī)則) , use the frame to describe the fingerprint in order to create the frame system, get the information of host(主機) to match the system to identify the type of OS in remote host. Result from experimental(實驗性的) appears that this method can identify the OS effectively, the action of is more secretly than other systems such as nmap and xprobe ( xprobe: X探針) . Key words: TCP/IP Fingerprint OS It is an important field that identify what OS in remote host. Mastering the OS can analyse and acquire some information such as memory management、 the kind of CPU. These information is important for puter work attack and puter work defense. The main way to identify is through the TCP/IP fingerprint to finish. Nearly all kind of OS customize(定制) their own’s protocol stack by following the RFC. This instance cause the fact that every protocol stack has some different details during implementing. These details are known as fingerprint which make it possible to identify the OS . Nmap、 Queso[1] use the fingerprint in transport layer. They send the particular packets to the target and analyse the retured packets, matching the fingerprint in the fingerprint warehouse in order to get the result. The information in the warehouse is affected by the specified message for probing. It hardly to distinguish the similar OS (). Xprobe[2] mainly use the ICMP which make use of five kinds of packets in ICMP to identify OS. It can give the probability of all possible situation which maybe the indeed OS. The main shortage is it excessively depend on ICMP Protocol. SYNSCAN[3] use some typical fields’ fingerprint to identify when it municaties with target host in application protocol. The warehouse of fingerprint have limited types of field. Ring 、 Ttbit[5][6] identify the OS using the performance character of TCP/IP. Because this kind of character is affected by work environment greatly. The result is often not exactly. Literature[7] analysis the action in messages which are acquired through interception(eg. The number of SYN request, a closed port how to response a connection request).Although this way is availability, it only distinguish a few given OS Above all the kinds of system, they all be scare of a way to describe the fingerprint of OS integrallty, which cause the proceeding of identify only depend on a part of TCP/IP . This paper propose a new method to resolve the problem: it uniformly the fingerprint of OS, acquire the message by some technology, identify the OS at last. The rest of the paper is anized as followed: Section Ⅱ we present based concept of this method. Section Ⅲ present how to describe and match the protocol fingerprint using frame technology. Section Ⅳ present an algorithm to implement the method and Section Ⅴ use experiment to validate its effectiveness and analysis the result. Finally Section Ⅵ present the concluding remark and possible future work. The proceeding of identify is to acquire message, extract the fingerprint and match the record of fingerprint warehouse, in order to know the type. This section define the measure which are to acquire message, the action and status of munication, also classify the fingerprint. These work are all prepared for the next section which how to built a frame system describing the fingerprint. To insert “Tables” or “Figures”, please paste the data as stated below. All tables and figures must be given sequential numbers (1, 2, 3, etc.) and have a caption placed below the figure (“FigCaption”) or above the table(“FigTalbe”) being described, using 8pt font and please make use of the specified style “caption” from the dropdown menu of style categories Conclusion In this paper, we have presented a method for identifying OS of remote host. The method use frame technology to express the fingerprint, make up of Probe and Monitor to get message
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