Configuring SNMP in SonicOS

12/20/2019 460 36880

DESCRIPTION:

SNMP (Simple Network Management Protocol) is a network protocol used over User Datagram Protocol (UDP) that allows network administrators to monitor the status of the SonicWall security appliance and receive notification of critical events as they occur on the network. The SonicWall supports SNMP v1/v2c and all relevant Management Information Base II (MIB) groups except egp and at. The SonicWall replies to SNMP Get commands for MIBII via any interface and supports a custom SonicWall MIB for generating trap messages. The custom SonicWall MIB is available for download from the mysonicwall.com web site and can be loaded into third-party SNMP management software such as HP Open view, Tivoli or SNMPC.

RESOLUTION:

Enable SNMP and configure SNMP parameters

• Login to the SonicWall management GUI as admin.
• Click on MANAGE, navigate to Appliance| SNMP.
• Check the box Enable SNMP.
• Click  Configure button and supply the parameters for SNMP or keep the defaults for general configuration.
• Click  OK .
• Click Apply button on the top of the page.
  NOTE: For the SNMP functionality, the Community name should be the same in the SonicWall and the SNMP monitoring software.

Enable SNMP on the SonicWall interface

1.  Login to the SonicWall management GUI as admin.
2. Click MANAGE, Navigate to Network | Interfaces and click on the configure button in front of the LAN & WAN interface.

LAN Interface (X0)

• In the Management section of Edit X0 interface window, check the SNMP box.
• Click OK.
• 

WAN Interface (X1)

• In the Management section of Edit X1 interface window, check the SNMP box.
• Click OK .         
           

Allow SNMP Management

1. Please login to the SonicWall management GUI as admin.
2. There are two ways to allow access to SNMP management on an interface's IP address:

Create an explicit access rule; in our example, it's a LAN to WAN rule

• Click MANAGE, navigate to  Rules  | Access Rules.
  
• Click Add to create an access rule.
  
• Enter specific address objects on Service, Source and Destination fields.
  
• Click Add .

Create an access rule; in our example, it's a LAN to WAN rule

• Click MANAGE, navigate to  Rules  | Access Rules.
  
• Click Add to create an access rule.
  
• Leave Service, Source and Destination fields as Any (Default).
  
• Check Enable Management.
• Click Add.
  

Configuring SNMP & adding SonicWall unit in PRTG Monitoring software 

•   Open the SNMP software and register the SonicWall. (You can download and install a free edition of PRTG from http://www.paessler.com/prtg/download).Screen shots for PRTG (V14.2.9.1689) are attached below, just enter the SonicWall appliance's LAN IP address, along with the community string and it will start gathering data from the SonicWall.Select Device tab in the PRTG software. Under Overview Click Add Device button to add your SonicWall device.

• In the device name enter SonicWall TZ 200 (You should use the same name which you used in SNMP configuration of SonicWall.
• In IPV4- Address/DNS Name 192.168.168.168 (IP address of the SonicWall interface to which server is connected).
• Device Icon: Select Icon.
• Click Continue for next step.
  
  
  
• You will find the new device which we added. Click Add Sensor button to select the sensor type.

• Select SNMP under Technology Used.
• Select SNMP Traffic under Matching Sensor Type.
  
  
  
• Select the interface for which you would like to monitor traffic. In this scenario select X0, X1 & W0 interface and click Continue button:
  
  
• Now you can see the sensor information for all the interface with the traffic rate.
  

How to Test

• In order to test the SNMP traffic. Select any one interface to see its traffic rate with graph. Click on X0 interface to see the information as below.
  
  
  
• The Live data can be shown in the graph format as below for the X0 interface.