Cisco Cisco Web Security Appliance S670 User Guide

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The IronPort AsyncOS operating system supports system status monitoring via SNMP (Simple 
Network Management Protocol). This includes IronPort’s Enterprise MIB, 
asyncoswebsecurityappliance-mib.txt. The asyncoswebsecurityappliance-mib helps 
administrators better monitor system health. In addition, this release implements a read-only 
subset of MIB-II as defined in RFCs 1213 and 1907. (For more information about SNMP, see 
RFCs 1065, 1066, and 1067.) Please note: 

• SNMP  is  off by default. 

• SNMP SET operations (configuration) are not implemented.

• AsyncOS supports SNMPv1, v2, and v3.

• The use of SNMPv3 with password authentication and DES Encryption is mandatory to 

enable this service. (For more information on SNMPv3, see RFCs 2571-2575.) You are 
required to set a SNMPv3 passphrase of at least 8 characters to enable SNMP system 
status monitoring. The first time you enter a SNMPv3 passphrase, you must re-enter it to 
confirm. The 

snmpconfig

 command “remembers” this phrase the next time you run the 

command. 

• The SNMPv3 username is: v3get. 

• If you use only SNMPv1 or SNMPv2, you must set a community string. The community 

string does not default to 

public

.

• For SNMPv1 and SNMPv2, you must specify a network from which SNMP GET requests 

are accepted.

• To use traps, an SNMP manager (not included in AsyncOS) must be running and its IP 

address entered as the trap target. (You can use a hostname, but if you do, traps will only 
work if DNS is working.)

Use the 

snmpconfig

 command to configure SNMP system status for the appliance. After you 

choose and configure values for an interface, the appliance responds to SNMPv3 GET 
requests. These version 3 requests must include a matching password. By default, version 1 
and 2 requests are rejected. If enabled, version 1 and 2 requests must have a matching 
community string.

IronPort Systems provides “enterprise” MIBs for Email and Web Security appliances as well as 
a “Structure of Management Information” (SMI) file:

• asyncoswebsecurityappliance-mib.txt — an SNMPv2 compatible description of the 

Enterprise MIB for IronPort Web Security appliances.

> snmpwalk -v 3 -l AuthNoPriv -u v3get -a MD5 ironport serv.example.com