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- Last Review: July 29, 2013

Home > NetScanTools Pro > Technical Details > SNMP Tools

SNMP Tools (Core and Advanced) Description

About the SNMP - Core and Advanced Tools

SNMP (Simple Network Management Protocol) is one of the most powerful and important tools in NetScanTools Pro. This tool communicates with SNMP enabled devices using SNMP version 1, 2c and version 3. You can gather a wealth of detailed information about the target system provided the target is running SNMP and you have the right access credentials (community name or SNMPv3 access). Devices that run SNMP include network switches, routers and even Windows computers.

Here are a few of the things you can obtain:

  • Listening process/daemon programs running on the target.
  • Network Interface details such as the IPv4/IPv6 address(es) and MAC address, speed, MTU and status of each interface.
  • TCP, UDP, ICMP, IP protocol real time statistics.
  • Detailed information about the type of system, model number, including operating system type, revision, system uptime, serial number, and sometimes information like the names of the contact person and the computer location.
  • All kinds of statistics about things like packets, device status, etc.
  • The LAN manager shared resources.
  • The usernames of the Windows accounts (if LAN manager MIB is running on a Windows machine)

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Version 11 SNMP Core and Advanced Tool Slideshow


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Purpose of the SNMP Tools

  • The purpose of this tool is to create SNMP queries to send to a target then display the response from the target. If the target is running SNMP and you have the proper access credentials, you can gain an enormous amount of information about the target.

This tool is currently IPv4 only. IPv6 migration will be occurring at some point during the v11 series.

SNMP Tool Capabilities

The SNMP toolset is split into two tools, Core and Advanced:
  • [Select OID...] button (core). This is used to bring up a selection tree for choosing the OID (object identifier) number to use during your queries. OIDs are like database indexes to a particular object of data which may be static or dynamically updated in real time. This selection tree is built using the currently loaded OIDs.
  • Walk (core). OID numbers are organized in a directory tree structure, the walk command will allow you to view all the subitem entries and their data values for a particular parent OID.
  • WalkBulk (core, v2c/v3 only). This differs from the Walk function above in that a group of subitem data values can be retrieved with each request. The final result is the same, it is more efficient. You can define how many items you will accept using 'max bulk reps'.
  • Get (core). This feature "gets" the single data value or string associated with a specific OID.
  • GetNext (core). This feature "gets" the next data value or string after a specific OID.
  • GetBulk (core, v2c/v3 only). This feature "gets" the data value or string associated with a specific set of OIDs beginning with the one you entered. Similar to WalkBulk except that only the item count you enter in 'max bulk reps' is used.
  • Set (core). This feature "sets" the data associated with a specific OID to a new value. The Set dialog appears with a means to select the type of data entered and the value.
  • OID Conversion (core). There are two of these features. One is for converting from a numeric OID to a more human friendly text representation and the other reverses the procedure. This depends on the text of the MIB to be present. You can easily add your own MIBs into this program.
  • Get Status (core). This query requests for a number of OID entries to provide you with a quick look into the status of the target system such as interface count and status.
  • Routing Table Report (advanced). Shows the IPv4 routing table from the target.
  • Arp Cache Report (advanced). View the current arp cache on the target.
  • Listening Ports Report (advanced). Show the listening ports on the target.
  • System Info Report (advanced). Shows system description, time since boot, system name, location, contact and more.
  • SNMP Dictionary Attack Tool (advanced) - uses password guessing to recovery the community name (password) from an SNMP v1/v2c device. Can scan a set of devices simultaneously. More information.
  • SNMP Scanner Tool (advanced) - similar to the Dictionary Attack tool except instead of guessing the community name, you give it a list of expected community names. You also give it a list of IPs.

A video of the SNMP Tool

Coming soon!

More Information

Here are links to related tools.

 

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