Network Time Protocol
Lesson 3: NTP
The final topic in this chapter shows how to solve an operational problem with log messages that occur on routers and switches. Solving this problem might not appear to be related to security at first, but it actually does play a key role at looking for and correlating the evidence that some kind of attack has happened.
Routers and switches issue log messages in response to different events. For example, when an interface fails, the device creates log messages. With default settings, IOS sends these messages to the console port. IOS can be configured to handle log messages in a variety of ways. The Cisco CCNA ...
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