D-Link DFL-260E Log Reference Guide for DFL-260E - Page 29
Introduction - vpn
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Chapter 1. Introduction • Log Message Structure, page 29 • Context Parameters, page 31 • Severity levels, page 35 This guide is a reference for all log messages generated by NetDefendOS. It is designed to be a valuable information source for both management and troubleshooting. 1.1. Log Message Structure All log messages have a common design with attributes that include category, severity and recommended actions. These attributes enable the easy filtering of log messages, either within NetDefendOS prior to sending them to a log receiver, or as part of analysis that takes place after the logging and storage of messages on an external log server. The following information is provided for each specific log message: Name ID The name of the log message, which is a short string, 1-6 words separated by _. Please note that the name cannot be used as a unique identification of the log message, as several log messages might share the same name. The ID is a number made up of a string of 8 digits which uniquely identifies the log message. The first 3 digits identify the category to which the log message belongs. Note In this guide, the Name and the ID of the log message form the title of the section describing the log message. Category Default Severity Log Message Log messages are grouped into categories, where each category maps to a specific subsystem in NetDefendOS. For instance, the IPSEC category includes some hundreds of log messages, all related to IPSec VPN activities. Other examples of categories include ARP, DHCP, IGMP and USERAUTH. In this guide, categories are listed as sections in Chapter 2, Log Message Reference. As previously mentioned, the category is identified by the first 3 digits in the message ID. All messages in a particular category have the same first 3 digits in their ID. The default severity level for this log message. For a list of severity levels, please see section Section 1.3, "Severity levels". A brief explanation of the event that took place. This explanation often features references to parameters, enclosed in angle brackets. Example: Administrative user logged in via . Access level: Note that this information is only featured in this reference guide, and 29
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