Section 6 - Lecture 50 - MONITORING - PROTOCOLS - DOCUMENT.pdf

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CCNA Security
Monitoring
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CCNA Security – Monitoring
In this lesson...
✓
Syslog Server
✓
SNMP
✓
Netflow
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CCNA Security – Monitoring
Syslog Server
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Valid levels are:
emergency
alert
critical
error
warning
notification
informational
debug
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What level to capture?
Router(config)# logging trap informational
Valid logging facilities are local0 through local7.
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Enable logging:
Router(config)# logging on
Specify a syslog server:
Router(config)# logging 172.16.1.2
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CCNA Security – Monitoring
SNMP
TEST IT!
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Free MIB browser:
http://ireasoning.com/mibbrowser.shtml
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SNMP
Simple Network Management Protocol (SNMP) is a protocol for managing devices on IP networks. SNMP
exposes management data in the form of variables on the managed systems, which describe the
system configuration.
SNMP itself does not define which information (which variables) a managed system should offer. Rather,
SNMP uses an extensible design, where the available information is defined by management information
bases (MIBs). MIBs describe the structure of the management data of a device subsystem.
There are three versions of SNMP -- v1, v2, and v3. Each has more features than the next. Most
network admins today use v2, but v3 offers many more security features.
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CCNA Security – Monitoring
SNMP
Enable SNMP:
Router(config)# snmp-server community cisco123 RO
Options:
Router(config)# snmp-server contact xxxx
Router(config)# snmp-server location xxxx
Router(config)# snmp-server chassis-id xxxx
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