practical packet analysis using wireshark to solve real world network problems phần 4 docx

... Figure 4- 3: The Save File As dialog allows you to save your packet captures. Working with Captured Packets 45 Figure 4- 7: A packet with the packet time reference toggle enabled NOTE Setting a packet ... 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,...

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

... 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 ... to show you how to use it in real- world scenarios. Practical Packet Analysis shows you how to: • Use packet analysis to tackle common networ...

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? ” ... is really almost no protocol that Wireshark isn’t capable of supporting. User Friendliness The Wireshark interface is one of the easiest to understand of any packet...

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

... ceases. Common Protocols 73 Following this handshake, the first MSNMS packet is sent from 192.168.0.1 14 to a server residing outside of your local network (Figure 6- 24) . Figure 6- 24: This packet shows ... 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 chang...

Ngày tải lên: 14/08/2014, 14:20

... not really resulted in much of interest to us—that is, until packet number 357, shown in Figure 7- 34. Figure 7- 34: Packet 357 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 of re...

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

... 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

... dialog, 47 filter expression syntax structure, 47 49 filters, 45 specific to wireless networks, 145 – 148 specific to BSS Ids, 146 FIN/ACK packet, for TCP session termination, 68 FIN packet, ... scenarios. Practical Packet Analysis shows you how to: • Use packet analysis to tackle common network problems, such as loss of connectivity, slow networks, malware...

Ngày tải lên: 14/08/2014, 14:20