practical packet analysis using wireshark to solve real world network problems phần 9 potx

... 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 a display filter to show only those packets ... passwords of network administrators to gain administrative access to a network. Others simply want to bring a network to its knees. In this case we want to access...

Ngày tải lên: 14/08/2014, 14:20

... into the Wire 90 Analysis 90 Summary 92 An Evil Program 92 What We Know 92 Tapping into the Wire 92 Analysis 93 Summary 97 Final Thoughts 98 8 FIGHTING A SLOW NETWORK 99 Anatomy of a Slow Download ... 88 Summary 90 PRACTICAL PACKET ANALYSIS Using Wireshark to Solve Real- World Network Problems by Chris Sanders San Francisco ® xvi Acknowledgments a...

Ngày tải lên: 14/08/2014, 14:20

... 208 10.100.1.1 10.100.1.100 192 .168.0.1 192 .168.0.2 192 .168.0.3 192 .168.0.4 192 .168.0.5 192 .168.0.6 192 .168.0.7 192 .168.0.8 192 .168.0 .9 10.100.1.150 192 .168.0.50 192 .168.0.51 192 .168.0.52 192 .168.0.53 192 .168.0.54 192 .168.0.55 192 .168.0.56 192 .168.0.57 192 .168.0.58 Packet Analysis ... the packet level, the more we can control our network and solv...

Ngày tải lên: 14/08/2014, 14:20

... 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 packets when nothing is wrong on the network? ” ... understanding of packet sniffer placement in a variety of different network topologies. We will look at various real- world network setups as we determine the best...

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 ... only marked packets when saving packet captures.) There are several reasons you may want to mark a packet, including being able to save those packets separately, or to be a...

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

... definitely wrong here. As shown 74 Chapter 6 Packet 9 is the last packet to be sent to fully establish communication. As shown in Figure 6- 29, packet 9 is a JOI packet sent from the remote MSN servers, ... 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...

Ngày tải lên: 14/08/2014, 14:20

... 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 of real- world packet analysis. 100 ... difference is that the time -to- live value in these packets is set to one, as shown in Figure 8 -9. Figure 8 -9: This ping packet has a time -to- live value of one. T...

Ngày tải lên: 14/08/2014, 14:20

... workstation to monopolize all of the company’s Internet traffic. This case reminds us that when doing analysis, it is common to want to use some of the more advanced features to try to quickly solve ... router on a network. An edge router sits on the network and connects that network to the outside world. Tapping into the Wire Because the edge router handles all traf...

Ngày tải lên: 14/08/2014, 14:20

... scenarios. Practical Packet Analysis shows you how to: • Use packet analysis to tackle common network problems, such as loss of connectivity, slow networks, malware infections, and more • Build customized ... those packets once you’ve captured them? And how can those packets help you to better understand what’s going on under the hood of your network? Practical Pack...

Ngày tải lên: 14/08/2014, 14:20