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VID 20019
Severity 20
Port 161
Protocol UDP
Class SNMP
Detailed Description The SNMP agent allows remote users to access the RMON information.
The RMON MIB (Management Information Base) provides a standard method to monitor the basic operations of the network, providing interoperability between SNMP management stations and monitoring agents.
RMON has four major functions:
- Setting alarms for user-defined events
- Gathering real-time and historical Ethernet statistics
- Logging events
- Sending traps for events

Access rights to these RMON MIB must be carefully administered.
Recommendation If the manufacturer provides the access control facilities for RMON queries, follow their recommendations to properly support your site's security policy.

-- OR --

1. If SNMP is not required, disable the service.
- UNIX : Kill the snmp process found from the list of the processes and remove it from any RC scripts.
- Solaris 10, Solaris 11:
# svcadm disable svc:/application/management/snmpdx
- Enterprise Linux 6.4, CentOS 6.4, Fedora 19:
# /etc/init.d/snmpd stop
# rpm -e (snmp name)
- Windows : Stop the SNMP service and change Startup type to Disabled (In windows execute services.msc -> Services -> SNMP Service)

2. If you need SNMP for network management, make sure it is properly configured with private community names
- Unix : Configure 'set-community-name' line in /etc/snmpd.conf
- Router : Type 'show config' and make sure 'snmp-community' is properly configured
- Windows : Configure the community name with private one (In windows execute services.msc -> Services -> SNMP Service -> 'Security' tab)

3. Filter incoming traffic to the 161/udp port
Related URL (CVE)
Related URL (SecurityFocus)
Related URL 1797 (ISS)