An important part of a security policy is implementing the router logging facility. Cisco routers can contain logging information about any configuration changes, ACL violations, status change of the interface, and so on. Cisco routers also facilitate sending log messages to various locations. Configuring a router enables sending log messages to the following items:
- Console logging: Console logging is used to modify or test the router when it is connected to the console. Any messages sent by the console are not stored in the router. Therefore, it is not considered a major security event.
- Buffered logging: A router can be regulated to store the log messages in its memory. This is referred to as buffered logging. It is a useful security tool but whenever the router is rebooted, it clears the stored events, which is a major drawback.
- SNMP...
