practical packet analysis using wireshark to solve real world network problems phần 3 ppt

... wish to use, and click Capture (Figure 3- 3). Figure 3- 3: Selecting an interface on which to perform your packet capture 3. Your packet capture should begin and Wireshark should show the active packet ... First Packet Capture In order to get packet data into Wireshark, you’ll perform your first packet capture. You may be thinking, “How am I going to capture packet...

Ngày tải lên: 14/08/2014, 14:20

... requests to change the working directory to /, which is the root directory of the FTP server. When you first log into an FTP server, the CWD command is issued to change to the root directory, ... CASE SCENARIOS Now we’ve arrived at the real meat and bones of this book—we are ready to use Wireshark and packet analysis to actually analyze network problems. We’ll begi...

Ngày tải lên: 14/08/2014, 14:20

... file-sharing network. Clicking them gives a bit more detail, as shown in Figure 8 -33 . Figure 8 -33 : These Gnutella packets contain some interesting information. The Packet Details pane for packet 431 (in ... additional information that leads us straight to the problem. Specifically, packets 431 , 433 , and 434 are all identified as Gnutel packets. These Gnutel packets are charact...

Ngày tải lên: 14/08/2014, 14:20

... into the Wire 86 Analysis 87 Summary 88 Inbound FTP 88 What We Know 88 Tapping into the Wire 88 Analysis 88 Summary 90 PRACTICAL PACKET ANALYSIS Using Wireshark to Solve Real- World Network Problems by ... scenarios. Practical Packet Analysis shows you how to: • Use packet analysis to tackle common network problems, such as loss of connectivity, slow...

Ngày tải lên: 14/08/2014, 14:20

... the packet level, the more we can control our network and solve problems. This is the world of packet analysis. This book dives into the world of packet analysis headfirst. You’ll learn what packet ... able to imple- ment advanced packet analysis techniques that will help you solve even the most difficult problems in your own network. What Is Packet Anal...

Ngày tải lên: 14/08/2014, 14:20

... the Packet List pane and choose Mark Packet from the pop-up. Or, single click a packet in the Packet List pane and press CTRL-M to mark it. To unmark a packet, toggle this setting off using ... will need to be able to navigate through packets more efficiently. This is the reason Wireshark allows you to find and mark packets that match certain criteria. Introduction...

Ngày tải lên: 14/08/2014, 14:20

... and the Wireshark program. In order for a protocol to be supported by Wireshark, it must have a dissector built into it. Wireshark uses several dissectors in unison to interpret each packet. ... want to forgo the name resolution feature in order to conserve system resources. Protocol Dissection A protocol dissector allows Wireshark to break down a protocol (ICMP, for exa...

Ngày tải lên: 14/08/2014, 14:20

... not really resulted in much of interest to us—that is, until packet number 35 7, shown in Figure 7 -34 . Figure 7 -34 : Packet 35 7 is a DCEPRC packet initiated by a host outside of our network. Packet ... with Wireshark, packet analysis, and network troubleshooting in general. The rest of the book will be written in much the same format but will focus on different areas o...

Ngày tải lên: 14/08/2014, 14:20

... music! Security-based Analysis 131 Tapping into the Wire Some hackers want to capture the passwords of network administrators to gain administrative access to a network. Others simply want to bring a network to ... Client (Monitoring) Monitor Mode 126 Chapter 9 Figure 9-7: Packet 10 shows an attempt to log in to the admin account. This is a great opportunity to use...

Ngày tải lên: 14/08/2014, 14:20

... 28 first packet capture, 31 33 following TCP streams, 55–56 history of, 27–28 installing, 29 31 IO Graphs window, 59–60 mailing list, 1 53 main window, 33 34 Packet Bytes pane, 34 , 118–119 Packet ... while Wireshark comes with documentation, there’s not a whole lot of information to show you how to use it in real- world scenarios. Practical Packet Analysis shows...

Ngày tải lên: 14/08/2014, 14:20