Practical Packet Analysis by Chris Sanders; Chris Sanders

Practical Packet Analysis by Chris Sanders; Chris Sanders

Author:Chris Sanders; Chris Sanders
Language: eng
Format: mobi, epub, pdf
Tags: COMPUTERS / Networking / General
Publisher: No Starch Press
Published: 2009-08-19T23:00:00+00:00


In this capture file you will see an example of a client computer (192.168.0.2) connecting to a telnet server (192.168.0.1). As you begin to step through the data being transmitted, notice that everything is sent in clear text. For this reason, the telnet protocol should not be used to transmit sensitive data.

Note

You can be more secure by forgoing telnet and using SSH instead.

What type of communication is occurring in this exchange between server and client? Starting at the top, we can immediately draw several conclusions. The first several packets confirm that we are definitely seeing telnet traffic, because telnet-specific settings are being communicated between these two devices, as shown in Figure 6-21.



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