Wireshark - 1.0 Betriebsanweisung
7.3. Expert Infos
The expert infos is a kind of log of the anomalies found by Wireshark in a capture file.
The general idea behind the following "Expert Info" is to have a better display of "uncommon" or
just notable network behaviour. This way, both novice and expert users will hopefully find probable
network problems a lot faster, compared to scanning the packet list "manually" .
just notable network behaviour. This way, both novice and expert users will hopefully find probable
network problems a lot faster, compared to scanning the packet list "manually" .
Expert infos are only a hint!
Take expert infos as a hint what's worth looking at, but not more. For example: The
absence of expert infos doesn't necessarily mean everything is ok!
absence of expert infos doesn't necessarily mean everything is ok!
The amount of expert infos largely depends on the
protocol being used!
protocol being used!
While some common protocols like TCP/IP will show detailed expert infos, most other
protocols currently won't show any expert infos at all.
protocols currently won't show any expert infos at all.
The following will first describe the components of a single expert info, then the User Interface.
7.3.1. Expert Info Entries
Each expert info will contain the following things which will be described in detail below:
Table 7.1. Some example expert infos
Packet #
Severity
Group
Protocol
Summary
1
Note
Sequence
TCP
Duplicate
ACK (#1)
ACK (#1)
2
Chat
Sequence
TCP
Connection
reset (RST)
reset (RST)
8
Note
Sequence
TCP
Keep-Alive
9
Warn
Sequence
TCP
Fast retrans-
mission
(suspected)
mission
(suspected)
7.3.1.1. Severity
Every expert info has a specific severity level. The following severity levels are used, in parentheses
are the colors in which the items will be marked in the GUI:
are the colors in which the items will be marked in the GUI:
•
Chat (grey): information about usual workflow, e.g. a TCP packet with the SYN flag set
•
Note (cyan): notable things, e.g. an application returned an "usual" error code like HTTP 404
•
Warn (yellow): warning, e.g. application returned an "unusual" error code like a connection
problem
problem
•
Error (red): serious problem, e.g. [Malformed Packet]
7.3.1.2. Group
Advanced Topics
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