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GFI Network Server Monitor Network tools • 167
Screenshot 153 – The SNMP Audit tool
1. Specify the following parameters:
• IP Address – The IP address of the computer running SNMP
• String List –The list of strings/parameters to be checked (can be
left as default). This property is by default set to the dictionary file
included in GFI Network Server Monitor. This dictionary file called
snmp-pass.txt contains the list of strings which forms the query
data fields to be displayed in the result window, being the window
on the right of the SNMP Audit setup window. Should more/less
information be required, user can either edit the mentioned default
file or create a new one using a text editor.
• Resolve computer names – Enable this option to resolve IP
addresses and display the computer name.
• Scan Query Timeout – Timeout value in ms which defines the time
that a query is allowed to run before being stopped
2. Click on ‘Retrieve’ to start SNMP audit.
SNMP walk
The SNMP walk allows you to gather SNMP information. The right
pane contains a list of names symbolizing specific Object ID’s on the
device. To find out more about the information provided by the SNMP
walk, you will have to check with the vendor. Some vendors provide
great details on what each piece of information means, others, though
their devices support SNMP, provide no documentation on it at all.
NOTE: SNMP will help malicious users learn a lot about your system,
making password guessing and similar attacks much easier. Unless