Specifically, it can simultaneously compare multiple time series such as the number of simultaneous IP phone calls, the estimated number of network address and port translation (NAPT) tables, and traffic volume, which is not possible with other types of software such as Wireshark. This function can display multiple time series simultaneously. Each type of summary information can be subjected to full-text searches, making it easy to display a portion of the analysis results that are of interest to the maintenance personnel and to check individual packets in unison with Wireshark. It can display various types of service- and protocol-related information as listed in Table 1. This function displays the results of analysis performed by the captured-data analysis function. This is a useful function if the user wishes to correct the timestamps of captured data whose times are offset from the actual time. This function changes the timestamp given to each captured packet. Maintenance personnel can re-examine analysis results for certain data without having to perform the analysis again by simply inputting that data into the display section. 1), graph display function (4), and log display function (5). The display section presents the results of this analysis using the summary display function ((3) in Fig. It is capable of analyzing several gigabytes of data divided into multiple files all together. This function analyzes captured data and is the core of this software. Configuration of captured-data analysis support tool. This tool has an analysis section and a display section with a total of five functions, as shown in Fig. The captured-data analysis support tool consists of software that inputs data captured in the pcap/pcapng packet-capture format and displays the results of analyzing that data. We describe here some recent case studies of packet capture and analysis using this tool. To address these problems, we have developed and begun using a captured-data analysis support tool equipped with functions for supporting batch input and analysis of a large volume of captured data so that the causes of complicated IP faults can be quickly uncovered. Maintenance personnel must also learn how to use such analysis methods, which means that the analysis results can depend greatly on the maintenance personnel’s individual skills. However, with popular software for packet analysis such as Wireshark, the operations needed to identify the packets that are causing the fault from a large volume of captured data can be quite complicated and extremely time-consuming. These techniques obtain (capture) a large volume of packets transmitted between IP devices through the use of our gigabit-compatible protocol checker or a similar tool and analyze the state and content of communications. In response to this situation, techniques for identifying the causes of such faults have been promoted. As a result, there has been an increasing number of cases in which the conventional approach of dealing with a fault by simply replacing faulty equipment has not been effective. The functionality of routers and terminals installed in homes has consequently been advancing, but this has been accompanied by increasingly complicated IP faults. 5 secondsĭisplays all post requests (can be modified for other requests such as “HEAD”)ĭisplays all packet with the NTLM Auth message ( NTLMSSP_AUTH).The volume of Internet protocol (IP)-related data communications has been increasing thanks to the recent proliferation and increasing sophistication of IP broadband access services typified by NTT’s FLET’S HIKARI NEXT and the rise of social network services and other novel services. Here are several helpful Wireshark filters:ĭisplays all HTTP request and response packetsĭisplays all packet that contain a full request URI/URLĭisplays SSL handshake packets (client hello, server hello, client key exchange, change cipher spec, etc.)ĭisplays DNS delays greater than. To analyze captured packet data, use a tool that reads Packet Sniffer Pro 1.1 files, such as Wireshark or Packet Sniffer Pro 3.0.
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